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SPECIFICATIONS FOR THE EQUITABLE BUILDING BROADWAY AND NASSAU STREETS BETWEEN CEDAR AND PINE STREETS NEW YORK CITY, N. Y. E. R. GRAHAM, Architect RAILWAY EXCHANGE BUILDING, CHICAGO, ILLINOIS b 1\ SPECIFICATIONS FOR THE EQUITABLE BUILDING BROADWAY AND NASSAU STREETS BETWEEN CEDAR AND PINE STREETS NEW YORK CITY, N. Y. E. R. GRAHAM, Architect RAILWAY EXCHANGE BUILDING, CHICAGO, ILLINOIS JULY 3, 1913 1913 INDEX. PAGE. Boilers 286 Carpentry and cabinet work 122 Cut stone 55 Elevators 271 Engines 292 Foundation and masonry 9 General conditions 1 Generators 298 Glass and glazing 141 Hardware 146 Hollow tile fireproofing 61 Lighting fixtures 153 Mail chutes 144 Marble and tile work , 133 Mechanical equipment 160 Ornamental iron and bronze work 89 Painting 157 Plastering 114 Plumbing, sewers, gasfitting, ejectors and refrigerating plant 163 Roofing and sheet metal 74 Steamfitting, steam heating and ventilating, stack and ceiling lin- ing , 205 Structural steel 46 Terra cotta 69 Wiring 242 SPECIFICATIONS FOR THE EQUITABLE BUILDING BROADWAY AND NASSAU STREETS BETWEEN CEDAR AND PINE STREETS NEW YORK CITY, N. Y. GENERAL CONDITIONS. For the several dimensions, the arrangement and construction of this building, particular reference shall be had to the accompanying design prepared by E. R. GRAHAM, ARCHITECT, Chicago, Illinois. consisting of all drawings necessary to fully explain the work in detail. Definitions: Where the term "Owners" is used it shall be understood to refer to Equitable Building Company. Where the term "Architect" is used it shall be understood to refer to E. R. Graham, Architect, 1417 Railway Exchange Building, Chicago, or his representatives. Where the term "Contractor" is used it shall be understood to refer to Thompson-Starrett Co., No. 51 Wall street, New York City. Where the term "Sub-Contractor" is used it shall be understood to refer to the individual or firm contracting with the Thompson-Star- rett Co., 51 Wall street, for the work covered by these plans and speci- fications. Drawings and Specifications: The drawings, with such writings, interlineations and details as may be upon them, shall be considered as part of and illustrations to these specifications. These specifications are intended to supplement the drawings, the two being considered co-operative, and, therefore, it will not be the PROVINCE OF THE SPECIFICATIONS TO MENTION ANY PORTION OF THE CON- STRUCTION WHICH THE DRAWINGS ARE COMPETENT TO EXPLAIN, and SUCh omission will not relieve the contractor from carrying out such portions only indicated on the drawings, and should items be required by the specifications not indicated on the drawings they are to be supplied, even if of such nature that they could have been indicated thereon. Any items which may not be indicated on the drawings or mentioned herein, or work and materials required by the New York City Build- ing Laws, which are necessary to complete the entire work, as shown and intended, must be supplied in place without additional cost. The decision of the Architect as to the proper interpretation of the draw- ings and specifications shall be final. The Architect will furnish full size details for such portion of the work as in his judgment require it to explain the design more fully or govern profile, ornamentation and minor detail of design, and all work shall be executed in strict accordance with said details. The general character of the detail work is shown on scale details in the General Drawings, but minor modifications may be made in the full size details, and the contractor must not get out any part of the work requiring details until the same have been furnished. Figures shall have precedence over measurements, and details over small scale general drawings. Should any discrepancies or am- biguities be found in the drawings or specifications the same shall at once be reported to the Architect for correction. Designation of Materials: As a general guide to the Contractor in the execution of the work, the following colors are adopted to designate materials, although all such materials may not be colored: 3 Bine — Stone, Marble. Red — Brick, Hardwood on Details. Purple — Concrete, Fireproofing. Yellow — Wood. Green — Iron, Bronze, Sheet Metal. Brown — Terra Cotta. Liability Insurance: The Contractor shall maintain such insurance as will adequately protect itself and the Owner and Architect from all liability under the laws of the State of New York, and from the claims for damages for personal injuries arising directly or indirectly from operations under the contract, and the Contractor shall be liable to the Owner for failure to maintain such insurance. Personal Supervision: The Contractor shall give its personal supervision to the work and shall have at all times some competent person on the work to act for it. Public Ordinances: The Contractor hereby binds itself to protect the Owner and save it harmless from all damages arising from violations of the public ordinances of any kind resulting from its operations during the erec- tion of this building. Protection Against Fire: The Contractor and its men are strictly forbidden to smoke, or light fires of any kind, in or about this building. Protection Against Damage: The Contractor shall use all care and diligence to protect its work from damage resulting from carelessness or otherwise until the build- ing is completed and accepted. The Contractor shall also be responsible for any and all damage to its work by reason of the action of the elements until the entire building is complete and accepted. Hoisting, Staging and Runways: The Contractor, unless otherwise specified, shall do all hoisting of its materials, and shall provide and maintain proper staging, etc., for the erection and completion of its work. When the Contractor has completed its work it shall remove promptly from the building all such apparatus. Materials and Workmanship: All materials and labor mentioned in these specifications under the various subheads shall be provided and put in place complete. All materials shall be new and the best of their respective kinds. Should it become necessary to substitute material different from that called for, the written consent of the Architect must be obtained before the change is made, and the material used shall be equal in every respect to that called for. All work shall be executed in a neat and skillful manner exactly as specified or detailed, and if not mentioned or detailed, then to the approval of the Architect. In all cases the work shall be executed to the entire satisfaction of the Architect. All rejected and condemned material shall be at once removed from the premises and shall not be used in this work. Sub-Letting : The Contractor shall not sub-let any portion of its work without the written consent of the Architect. A list of all sub-contractors shall be submitted to the Architect for approval before entering into contract with such sub-contractor; however the General Contractor will not be relieved from any obliga- tions under his contract, by the approval or disapproval of the names of the sub-contractors. Removing Scaffolding and Other Apparatus: At the completion of the work, or at any other time the Architect may direct, the Contractor shall remove any and all scaffolding appa- ratus, and other temporary apparatus required during the building operations, from the building, and should it neglect to do so imme- diately after being notified, the Architect may have the work executed at its expense. Patents : The Contractor hereby agrees to protect and save harmless the Owner from loss or damage cansed by suit or otherwise for infringements of patents for materials or methods used in the construc- tion of any work called for in the specification. Signs: The Contractor shall not place or maintain any signs, bills or post- ers, in or about this building, except by written permission of the Architect. Watchmen : The Contractor shall employ and maintain a corps of day and night watchmen during the construction of the building, which shall be under tbe direction of the Architect. Electric Lights: Wherever electric lights are found necessary in the progress of the work the Contractor shall supply and maintain, such light as may be required to properly execute the work. Insurance : All work is at the Contractor's risk until the same is completed and accepted by tbe Architect. The Contractor is to furnish insur- ance from time to time as certificates are issued, in a company or com- panies acceptable to the Owner, same being made payable to the owner for an amount equal to the certificates so isseud. This insur- ance shall remain until the completion of the work and its acceptance by the Architect. Additional Work Ordered During Construction: No claim for additional compensation, on account of extra labor or materials furnished, will be entertained unless in each and every instance said extra labor or materials are furnished upon written or- der signed by the Architect. In case of extra work ordered, the total compensation for which is not previously agreed upon and stipulated in the order, the Con- tractor shall report to the Architect at each daily meeting, the labor and material expended in sucli extra work on the previous day and at the end of each week shall present for the approval of the Architect, itemized bills covering said extra labor and material; otherwise no claim for compensation on account thereof will be allowed. Extras and Credits Due to Revised Drawings: Whenever revisions, changes, alterations, additions or omissions are made for which drawings and details have been prepared and sub- mitted to the contractor, the contractor shall submit promptly to the Architect an itemized statement of quantities and prices incident to such revisions, changes, alterations, additions and omissions, to facili- tate the checking of quantities involved and the prompt issuance of an order covering the extra or credit as the case may be. Barricades: The Contractor shall properly barricade the work at all times and erect proper shelters wherever necessary so as to properly protect the work from damage. All such barricades shall be so arranged as to insure the safety of the workmen and passers-by. Office, Telephone and Stenographic Work: The Contractor shall furnish labor and materials and erect an office on the grounds, as per plans and directions of the Architect, and shall move this office at any time and to any place directed by the Architect. This office shall be kept clean of debris and shall be considered the office of the building, in wbich the general drawings shall be stored. This office shall be subject to the control and direction of the Architect. The Contractor shall equip the office with a telephone and employ a stenographer on the work to do the writing that may be necessary for the Architect and his Superintendent. Building Inspector's Office: The contractor shall furnish the labor and materials and erect an office on the premises for the exclusive use of the Society's In- spector of Construction and his assistants. The office shall be made and constructed as per plans and directions of the Architect. The office shall be provided with telephone, chairs, desks, drawers and plan tables for the proper accommodation of the plans and speci- fications. During cold weather the office shall be hooked up with the steam heating system of the building, keeping the office warm and habitable at all times to give the inspector every facility for performing his duties. All necessary wiring for the proper lighting of the offices shall also be installed and provided with the necessary fixtures. Models: Furnish any and all models that may be required for the execution of the ornamental and decorative work of every description for the com- pletion of the building, employing for this work only the very best and most skillful modelers and sculptors who may be selected by the Architect at his option. Photographs in triplicate of the models shall be submitted to the Architect for his review and approval not executing any work until ap- proval of same has been obtained. Models shall be changed, altered or new models made until satis- factory to the Architect in every respect. Models shall be submitted in place should the Architect direct it to be necessary for their proper inspection. Samples: Samples of the various materials entering into the construction of the building as herein specified or as required shall be submitted to the Architect for approval. The approved samples shall be filed in the Architect's office and shall be taken as a standard for the materials entering into the construction of the building. Shop Drawings: It is understood that before the manufacture or installation of the work under this contract is carried forward, shop drawings shall be prepared and prints in triplicate of same submitted to the Archi- tect for approval, executing no work until such approval has been obtained. The Architects ' approval, however, shall not relieve the Contractor of responsibility for errors, as the Architects' approval of the drawing is only general and is not intended to serve as a check, and does not in any way relieve the Contractor from the necessity of furnishing the materials and performing the work as required by the drawings and specifications. 8 All shop drawings previous to submission to the Architect for re- view and approval shall be completely checked by the Contractor and it must be distinctly understood that drawings which do not bear evi- dence of such checking, or are incomplete will be returned without ap- proval for correction and preparation to comply with these require- ments. Each consignment of drawings sent for approval must be accom- panied by a letter of transmission giving a list of the number of the drawings. Each drawing must be marked with the name of the build- ing, and each series numbered consecutively for ready reference and convenience. 9 FOUNDATIONS AND MASONRY. In General: Furnish all labor and material required to execute and install com- plete the foundations, concrete work and masonry in accordance with the accompanying drawings and as required by this specification. Scope of Contract: This contract includes the wrecking of such portions of the old buildings and clearing of the site as hereinafter specified; the excava- tion and back filling; all foundations, and retaining walls and all stone and cinder concrete work of every description, plain or re-enforced ; all column concrete enclosures ; all brick masonry of every description, including backing of cut stone, ornamental iron, steel and terra cotta ; all cinder filling and cinder foundations for floors and roofs ; all cement floors and sidewalks ; all waterproofing or damp proofing of basements, pits, walls, floors and sidewalks; and all other work of a masonry nature shown upon the drawings or hereinafter specified. Permits : Take out the water permit necessary for the work included in this contract, together with the sidewalk vaults and street obstruction per- mits and any others that may be necessary to prosecute the work for the entire building, assuming all responsibility and paying all costs. The Owners will take out and pay for the building permit. Time: Time is of the essence of this contract. Therefore the Contractor shall provide an adequate plant and shall employ as many men, wag- ons and teams as practicable on the work of erection of the new build- ing, and shall prosecute the work with the utmost dispatch, hastening the same forward to completion as rapidly as possible consistent with good work. Structural Steel Drawings: A careful study should be made of the foundation plans in both Steel Diagrams and General Drawings. Any work of a concrete or masonry nature required by the Steel Diagrams which the General 10 Drawings do not show shall be executed by the Contractor the same as though shown by General Drawings. Wall Bearing Beams: All steel beams and girders resting on concrete or brick walls shall be provided with bearing plates and anchors which shall be bedded in cement mortar on the wall, bringing them to proper levels to receive the beams, building the beams and their anchors solidly and securely into the walls. Sidewalk angle guards, size as shown by the drawings, shall be fur- nished, be accurately located and built in with the sidewalk concrete and cement construction as the work progresses. Grounds and Anchors: All grounds, bolts and anchors which it may be necessary to build into concrete or brick masonry for the placing and anchorage of all subsequent work shall be furnished, located and disposed and built into the masonry in a solid and secure manner. Waterbars : Waterbars for all window frames shall be set and bedded in cement mortar in the waterbar raggles as the frames are placed in position. Slots and Chases in Walls: Build all slots, chases, recesses and openings in concrete and brick walls, piers and foundations which are required for the proper instal- lation of subsequent work. Examine the plumbing, heating and ventilating and other dia- grams to secure a full understanding of what will be required in this respect, as slots and openings are not in all cases shown on the general drawings. Grade : All beights shall be figured from an elevation 35.62" above New York City datum, the inside grade of the sidewalks at the intersection oT the building lines at the corner of Broadway and Pine Street, as shown on Architects' drawings, which level shall be known as "Grade" in this specification. 11 Allowance for Settlement: Make all due allowance in construction for such settlement as is likely to occur in the work, so that after it has taken place the various points will be at the elevations figured on the drawings. The amount of such allowance must be approved by the Architect. Foundation Work. Scope of the Work: The work covered by the drawings and this specification includes : 1. All general excavation and disposal of excavated material for all basements, vaults and retaining walls as shown, including the re- moval of all rubbish, old walls, footings, or other construction still remaining, and also any back-filling which may be required in any part of the work. 2. All sheeting, shoring, bracing and protection required in mak- ing all excavations. 3. All excavation, concrete or other work required to construct: (a) A continuous cofferdam and foundation wall around the outside of the property. (b) A retaining wall between the high and low level of the general cellar excavation. (c) All foundation piers for all interior columns and, if re- quired and called for later, additional piers or founda- dations for safe deposit vaults, etc. (d) A reinforced concrete curb wall around the entire prop- erty as shown on drawings. 4. All work necessary to maintain, safeguard and restore to orig- inal condition: ' (a) All adjoining streets. (b) All constructions contained in said streets. (c) All neighboring buildings, insofar as same may be af- fected by reason of work done under this contract. 5. All pumping required for the execution of this work. 6. All temporary work such as fences, sidewalk bridges, plat- forms, runways, staging, scaffolds, derricks, concrete forms, sheet pil- 12 ing, shores, bracing, temporary buildings, conveniences, etc., etc., as may be required for the proper execution of this work. 7. Furnishing and placing all steel reinforcement shown in the drawings or as called for in these specifications. 8. Placing and grouting all anchor bolts, and the four columns ex- tending into cassions as shown on drawings. 9. Payment of all charges for water, electric current or other service incurred for this work. 10. Obtaining all street permits, other than vault permit. 11. Kemoval and disposal of all excavated material and of all rubbish incident to this work. 12. Furnishing all labor, tools, machinery, derricks and other appliances or equipment of whatsoever description necessary and to the extent required for the prompt and proper performance of this work. 13. Removal of all temporary work as soon as the necessity for it has passed and the shifting and adjustment of braces and other tem- porary work as may be required for the execution of all work. Wrecking of Old Buildings on Site: All old buildings on the site to the level of the basement floor, with the exception of curb walls and sidewalks and such portions of the outer walls of the buildings as support sidewalks have been wrecked to the basement floor. Take the work at this point and execute all further wrecking, clearing the site of all obstructions preparatory to the erection of the new structure as shown and required by the draw- ings. Contractor's Liability: The Contractor shall assume all responsibility in regard to the proper shoring-up, underpinning, bracing and protection of the ad- joining or neighboring structures, and all liability for injury and dam- ages to said structures and their premises arising out of any operation connected with this contract. The Contractor shall indemnify the Owner and save it harm- less from all loss or expense and from all damages for which it may become liable in consequence of such injury or damage to adjoining 13 or neighboring structures and their premises, and in case the Owner is sued the Contractor shall defend such suit or suits at its own ex- pense, to final decree, judgment or compromise. Repairs to Adjoining Property: Execute all repairs to the adjacent, adjoining and neighboring structures and their premises that may be necessitated by any opera- tion connected with this contract and leave said structures without ex- ception in as good condition as they were at the commencement of this work. Compliance With Law and Protection for Workmen: The Contractor's attention is called to the requirements of the law as to safeguarding men employed to work in compressed air. The Contractor will be required to comply with the provisions of the law. If a hospital lock is required it shall be arranged to accommo- date at least two patients at the same time and shall be furnished with double entrance doors arranged for the ingress and egress of attendants without affecting the pressure carried in the hospital cham- ber. This lock must be ready for instant operation at all times when work under air is in progress. The Contractor shall observe all state and municipal laws and all Building Department and Sanitary Department rules and require- ments. Day and Night Work: If necessary, all work covered by this specification shall be pros- ecuted continuously day and night, working double shifts of men until the completion of same, except that it is optional with the Contractor whether it works or not on Sunday or holidays, but if the Contractor elects not to work on Sundays or holidays it shall not be held in any way to relieve it of the obligation to finish the work within the con- tract time. Survey and Marks: The Owner shall furnish the Contractor with a copy of the sur- vey of the property showing lot lines and the location of the necessary bench marks for levels, and the location of two main axis lines. The Owner shall have permanent marks established at the site from which 14 the building and property lines may be located, and also a permanent bench mark or marks for determining the levels of the building. The Contractor shall verify and work from these and shall be held en- tirely responsible for the accuracy of the placing of the work; to this end the Contractor shall employ a licensed surveyor or city engineer acceptable to the Architect to establish and verify all lines and levels in connection with this work. The approval of the engineer selected to do the work shall not relieve the Contractor of responsibility as to the correctness of the location and levels of the finished work. Re- ports of surveyor so employed shall be furnished in triplicate to the Architect and the Owners' Consulting Engineer for their information. In case any doubt should arise as to the accuracy of the surveys and levels made by the above mentioned surveyor, the Architect re- serves the right and privilege to call in another surveyor to verify all previous work and make such additional surveys and levels as may in his judgment be necessary to establish beyond doubt all points in question. The expense of such additional surveys shall be borne by the Contractor. Checking Measurements: The Contractor before commencing work shall carefully check the survey of the lot and all other measurements controlling his work, and shall inform the Architect of any discrepancies. Examination and Photographs of Adjacent 'Work: The Contractor before commencing operations shall carefully ex- amine the condition of all neighboring structures, and shall take levels on the front of all buildings facing the proposed building and shall make a record of any existing cracks, settlements or defects in same, and a copy of this record shall be filed with the Architect. The Con- tractor shall not be relieved of the responsibility of supporting and maintaining any neighboring building by reason of any defect existing in same. Photographs of the facades of the adjacent buildings facing the Equitable Building site shall be prepared by the Contractor, furnish- ing a complete set of prints properly mounted and bound, to both the Architect and the Owners for their files and records. 15 Excavation: The Contractor shall take over the premises in the condition ex- isting, and shall remove all old footings, walls or other construction remaining on the site and such portions of the sidewalk and vault con- struction as is necessary for the execution of the work, make all exca- vation necessary for the construction of all work covered in this speci- fication, and as required for all vaults, vault walls and vault floors and for all basement and boiler room floors, as indicated on the draw- ings. Cut and cap or otherwise take care of all street connections en- countered in excavating on the street or curb line and mark the loca- tion of same so that they can subsequently be located and reconnected as required. Perform all excavation as shown by the drawings required to ex- ecute the work and remove from the premises all surplus earth and debris. The entire area within the curb retaining and the cofferdam walls to be occupied by the building shall be excavated to the vari- ous levels of the bottom of the cinder foundation for the concrete floors, as shown by the drawings. All trenches shall be excavated to such sizes as to admit of the installation and construction of the foundation and shall be left level on the bottom to receive the con- crete work. No trenches shall be excavated deeper than required to receive the footings, as no filling under footings will be permitted, and if the excavation is carried too deep the depth of the concrete work must be correspondingly increased without extra charge. If any quicksand pockets or other soft spots are encountered be- neath foundations, piers, walls or footings, the same shall be exca- vated and filled in solidly with concrete to meet the approval of the Architect. Timber 'Work and Bracing Excavations: In prosecuting the excavations for this building the Contractor shall do all timber work, shoring and bracing necessary to retain the earth banks and prevent caving in and displacement of the adjacent streets and soil, furnishing all necessary braces, timbers, wales, crib- bing, planking and sheet piling for the purpose. All earth banks and the sides of all pits, trenches and other ex- 16 cavations shall be most thoroughly braced and protected in a manner to prevent any settlement whatsoever. All timber used, whether for caissons, sheeting, timbering, bra- cing, platforms or for temporary work, shall be sound, merchantable material suitable for the purpose for which it is intended. Bailing and Pumping: Perform all bailing and pumping necessary to drain and keep all excavations, pits, trenches, column foundation wells, and the whole basement entirely free of water during the progress of the work under all circumstances and contingencies that may arise, using such means as may be best adapted to conditions and approved by the Architect. Sheeting, Bracing and Protection of Street: The Contractor shall drive wood or steel sheet piling on the line of the curb to a sufficient depth below the bottom of the excavation re- quired for the vault wall. This sheeting, if of wood, shall be of new, sound, long leaf yellow pine, not less than 3" thick, tongue and grooved and driven close, plumb and true to line. If required, a power hammer shall be used in driving same. This sheeting shall be well braced, and the bracing shall be so ar- ranged, and if necessary shall be shifted, so as not to interfere with the sinking of the caissons nor the placing of the steel work, the con- struction of the vault wall or any other operation of this or other branches of work. In case any vault wall now in position is permitted to be utilized in the new building, the Contractor shall brace and maintain same. When the shoring and bracing is no longer required, the Con- tractor shall promptly remove same from the work. Subway on Broadway: The Contractor's attention is called to the existence of a subway on Broadway and the necessity of maintaining and safeguarding same not only against settlement, but also against fire, water or other mis- chance. 17 Curb Wall: The Contractor shall construct a vault or curb wall around the entire property with recesses where necessary for catch basins, hy- drants or other street constructions. Otherwise the outer face of the wall shall be flush with the curb, and shall have a uniform thickness of three feet down to the footing. The top of wall will conform to the street gi'ade and be finished approximately one foot below curb level and ready to receive the curb and sidewalk beams. The bottom of the 3' 0" wall will be at an elevation plus 8.000'. The wall shall be built of Class "B" concrete, reinforced with J" square deformed or twisted bars, set vertically 4" back from the inner face of the wall and spaced 9" center to center. Interior Retaining "Wall: The Contractor shall construct an interior retaining wall as shown on the plans, extending from Column 123 on the Pine street front north to Column 89, thence east to Column 91, thence north to Column 7 on the Cedar street front. This wall and its footing shall extend from elevation plus 3.000' down to elevation minus 16.0', except that over the piers for Columns 105, 89, 90, 91, 75, 59, 43 and 25 the footing shall extend down to the concrete around the grillages on these piers. This wall will be composed of Class "B" concrete. Any required openings or recesses shall be formed in this wall or in the curb wall, and- the Contractor shall, if required, set in these walls pipes, ducts, anchors or other connections, same to be furnished by other contract- ors. Cofferdam Wall and Foundations, for Exterior Columns. The outside cofferdam wall, surrounding the entire property, shall consist of four corner caissons and connecting walls, 6' 0" thick (con- crete size), and shall be constructed in sections, each section to be of length as hereafter determined. All sections shall consist of concrete piers. The ends of adjoin- ing sections shall subsequently be connected for their entire height by concrete joints, so as to form a complete and substantially water- tight cofferdam, continuous around the entire lot and extending from the cut-off levels shown to solid rock and making therewith a satis- factory joint. All piers forming this cofferdam wall shall be con- structed by the pneumatic method. In sinking the caissons for the 18 cofferdam the cutting edge must in all cases be carried down until a satisfactory joint is made with the hardpan or rock. If satisfactory joint is made in hardpan, the sinking of the caisson may be discon- tinued, but the excavation shall be continued of the full width until satisfactory rock is encountered. The bottom of the excavation shall then be carefully inspected, all loose or decayed rock shall be removed and the surface of the rock cleaned, and if necessary leveled or stepped off as directed to receive the foundation concrete. Pneumatic Caissons: Caissons shall be so constructed that no wood remains in the fin- ished piers or walls. Working chambers may be built of wood, steel or reinforced con- crete. The lower edge of the working chamber walls must be provided with a steel shoe and cutting edge, securely attached to the bottom of the wall. Side walls, if of concrete and forming part of the finished pier or wall, shall be reinforced with steel to the satisfaction of the Architect, and must not have inclined surfaces showing in the working chamber. Any changes in the thickness of the walls must be by horizontal offsets or steps. Side walls, if of wood, must not encroach on finished size for the concrete pier. No timber cross braces, wall timbers or nailing strips will be al- lowed to remain in the finished concrete. Caisson Roofs: The roof of the working chamber, if of timber, shall be entirely removed before completing the filling of the working chamber. The roof of the working chamber, if of concrete, shall be rein- forced, and all forms must be entirely removed before filling the work- ing chamber with concrete. The under surface of the roof must be smoothly and accurately finished to facilitate filling the working cham- ber. In all cases where the roof extends more than 4 feet hori- zontally from the working shaft, it shall be formed with steps having a vertical drop of not less than 3 inches for each 2 feet of horizontal distance. 19 Vent or Grout Pipes: In all caissons the roof of which is not removed, provision shall be made for grouting any voids which may be left after filling the working chamber. To this end the Contractor shall provide vertical vent or grout pipes not less than 3 inches inside diameter, extending from the roof of working chamber vertically to the top of the pier or wall. There shall be at least two of these grout pipes for each wall caisson, and one for each of the small cylindrical or square piers. These vertical pipes shall connect at the level of the working chamber roof with horizontal or inclined ducts or chases formed in the roof concrete, so arranged as to provide passageways for the grout. The number, size and location of these grout ducts and the loca- tion and arrangement of the vertical pipes to be subject to the ap- proval and direction of the Architect. Forming : The concrete forming the main body of the pier or wall above the roof level may be placed inside of a crib or cofferdam, or it may be cast in removable forms. In all cases the construction must be square and true to line and size and in correct relation to the working chamber, and the exterior surfaces must be smoothly finished without projections or roughness to interfere with the smooth sinking of the structure. The planking, joints, parts, sections, etc., of all concrete forms or of construction in which concrete is to be cast shall be tight against any leakage of water from the concrete and all surfaces used as re- movable forms shall be papered, waxed (not oiled) or otherwise pre- pared so that the concrete will not adhere to them. Special care shall be taken Avherever concrete is used in the con- struction of these piers and walls to produce a structure as nearly monolithic as possible. The deposition of the concrete must be as nearly a continuous operation as possible. The forms or enclosing structure must be strong enough and high enough to allow a section of 20 feet height of wet concrete to be added in one continuous op- eration. Upon the completion of a section the upper surface must be leveled, or if required a key depression formed in the upper surface before set has commenced. Before starting a new layer on a con- crete surface which has set for over one hour the surface shall be 20 scrubbed with stiff wire brooms and water and a layer of thin cement mortar not less than \" thick shall be spread over the entire surface. Design of Caissons: The Contractor must submit to the Architect for his approval, drawings showing the proposed dimensions, construction and reinforce- ment of the caissons and piers. Position of Joints: Submit a drawing showing the proposed length of caissons form- ing the cofferdam wall and the location of all joints ; and detail draw- ings showing the caissons, piers, method of forming joints, reinforce- ment of caissons, and piers, etc., subject to the approval and ac- ceptance of the Architect. Reinforcement : In all cases where the concrete forming the pier is placed before the caisson is in its final position, the concrete in the body of the pier shall be reinforced as follows : First Vertical Reinforcement: Vertical reinforcing composed of 1" square or equivalent area of deformed steel bars shall be set on the four sides of each cais- son forming part of a cofferdam wall. These bars shall be spaced 24" center to center, except as otherwise shown. All of these bars shall be set three (3") inches from the face of the concrete. Each line of reinforcement shall be continuous or if necessarily in sec- tions then the sections shall be lapped or connected so as to de- velop the strength of a continuous bar extending from the level of the cutting edge to the top of the finished pier. Second Circular Reinforcement: Spliced or continuous circular horizontal reinforcing rings shall be placed concentric with the opening for the working shaft. The rings shall not approach such opening closer than 4" and shall be spaced not more than V apart vertically, and shall have sufficient cross section to safely provide for the internal pressure due to the pressure of the air, figured at 25 lbs. per square inch on the shaft opening. 21 Third Horizontal Reinforcement: All caissons forming the cofferdam wall shall be reinforced by horizontal bars 1" square (or of equivalent area) laid parallel to the long sides of the caisson as follows : (a) Above the roof four bars, two on each side of the shaft opening 2' shorter than caisson length. (b) Four bars, six inches below the top and four bars six inches above the bottom of each build up or section of concrete. These bars to be one-half of the caisson length. In case the depo- sition of concrete in forming any section is interrupted for any reason for more than one hour, four additional bars shall be used as soon as the concreting is resumed. Position of Caissons: All caissons must be sunk as close to position and to the perpen- dicular as possible. To this end the Contractor must provide well braced guides and sliding blocks. No caisson will be accepted if it is more than 6" out of plumb in any direction or if more than 6" out of position at any point or level. If on completion any caisson does not come within such limits the Contractor shall without additional charge of compensation supply such additional construction or do such additional work (even to the removal and replacement of the caisson) as may be required by the Architect to rectify the matter. Acceptance of Bottom: When the excavation for a caisson has reached a satisfactory bot- tom, acceptable to the Architect, he shall issue to the Contractor a written acceptance of the bottom, and a signed record of the depth of excavation. The filling of the working chamber shall not be commenced before the bottom is accepted. Filling Working Chamber: In all cases provisions shall be made for filling all voids in work- ing chamber with concrete. The Contractor shall afford the Architect all possible assistance and information in order to insure the best possible results. The Contractor may dump soft concrete until the working cham- 22 ber is filled to within two feet of the roof. If the Architect so directs, the Contractor shall hold air on the caisson until this concrete has fully- set before continuing the filling of the working chamber, which shall be done by benching and ramming concrete against the roof or as otherwise directed. If required, leave a sump for observation directly below the shaft. After the completion of the operation of filling the working cham- ber (except for the sump or observation chamber) the Contractor un- der the direction of the Architect shall fully and completely grout the voids (if any) remaining in the working chamber and for this purpose shall provide suitable grout mixing machines in duplicate so as to permit of a continuous supply and a grout pump capable of producing a pressure of 100 lbs. and delivering no less than 50 gallons per minute, and shall provide suitable connections to the grouting or vent pipes hereinbefore specified. During the operation of grouting there shall be, if required, a com- petent man in the observation chamber to observe the results, and if possible to direct the flow of the grout. The operations of placing concrete under the roof and of grout- ing may be carried on before air is taken off the caisson or the Archi- tect may direct that air pressure be taken off before these operations, in which case the Contractor shall, if necessary, keep the shaft and sump free from water. After the completion of the filling of shaft and the grouting of same the Contractor shall bring the concrete forming the pier or wall to finished grade. All cofferdam caissons shall be constructed of Class "A" concrete. Joints for Caisson Wall: Each caisson forming part of the continuous wall around the lot must be provided at its ends with vertical grooves or chases corre- sponding to similar vertical grooves or chases in adjoining caissons. These grooves and the spaces between the adjoining caissons must be filled solidly with concrete, the concrete to extend without break for at least the central 75 per cent, of the full width of the wall and for the full distance between caissons, and it must extend vertically from top of the wall down to the rock. 23 The excavation for this joint must be done by some method which will exclude all water and permit of the inspection of the work. No timber will be permitted to remain in the joint and the con- crete forming the joint must connect with the concrete forming the ends of adjoining caissons, and must completely fill the grooves or chases thereof. Forming Pockets and Chases in Face of Cofferdam Wall: Where required the Contractor shall, without charge, form chases or pockets in the concrete forming the cofferdam for the reception of work to be subsequently done as herein specified. Cntting Pockets in Face of Cofferdam Wall: The Contractor shall, after the completion of the cofferdam wall, cut pockets for the reception of beams, girders, etc. Each pocket will be 30" high, 12" wide and 12" deep. General Excavation and Interior Pier work: The Contractor may defer commencing the foundations for interior columns until after the completion of the cofferdam wall. The Con- tractor has the option of using the pneumatic caisson method or other methods subject to the approval of the Architect for these interior piers. The Contractor shall defer that portion of the general excavation below elevation plus 13 feet until after the completion of the coffer- dam and the interior piers and until the steel columns and floor con- struction for the basement floor have been erected. The Contractor must provide cofferdams extending from the various cut-off levels up to elevation plus 13 feet for all exterior and interior piers and also pits for the cantilevers at the 4 corners, so as to permit of the convenient erection of the steel. It must also thereafter and when permitted complete the general excavation promptly in such a way as to pei'mit of the erection of the steel work above the basement floor level. It must also supplement the bracing effect of the basement floor by temporary braces as may be necessary and be responsible for the sufficiency of the operation and the means of bracing the cofferdam wall until the completion of all work. The Contractor must assume all responsibility for the safeguard- ing of the work, and the installation of structural steel or other per- 24 manent construction will not relieve it from responsibility for the bracing and maintenance of all walls and banks. Interior Piers: The interior piers will consist of rectangular piers and square or circular piers, having areas as indicated on the plan. The piers will have the cross section shown by the solid lines on the plan down to the point at which the bell commences. If hardpan of good quality and of considerable thickness is encountered, the bell will start one foot (1') below the top of hard pan and flare with a slope of ^ horizon- tal to 1 vertical until the required area indicated by dotted lines on the drawings is reached, below which point the excavation will con- tinue of the same dimensions for a depth of 6". If for any reason the Architect decides to carry the excavation to rock, the bell will be reduced or entirely omitted. The Con- tractor may be required to carry all these foundations for the in- terior columns down to rock, in which case the excavation in the hardpan will be substantially of the same size as the top of the pier or with a relatively small bell. In any case the Contractor must provide substantial curbing or lining for the excavation down to and connecting with the hardpan. This curbing or lining must be of such dimension and so arranged as to provide for the construction of the entire pier of the dimensions shown, including the bell or the ex- tension to rock as a monolith, and a method providing for the deposi- tion of all of the concrete required for the complete pier in a contin- uous operation will be required. Interior piers shall conform to the same specifications as pre- viously given for the piers or caissons forming the exterior wall so far as care to be taken in sinking, conformity to correct size and position, workmanship, etc. All interior piers shall be constructed of Class "A" concrete. Pipes and 'Wires in Ground: Support, shore up and protect all water, sewer and gas pipes and electric light, telephone and telegraph wires and conduits encountered in this work and immediately notify the proper officials or the persons or corporations owning same and allow them or their agents entrance and opportunity to take such additional measures as they may deem necessary. 25 Fire Hydrants and Lamp Posts: Shore up, protect and maintain in condition for use all fire hydrants and street lamps that may be on or aboui the premises, and allow the Department of Public Works access to same at all times. Hydrants shall be kept at all times free and clear of all obstruc- tions that would interfere with their use by the Fire Department. The chambers in which the hydrants are set, where coming within the curb wails, shall be rebuilt with masonry of sewer brick laid in mortar, composed of one (1) part Portland cement and two (2) parts of sand, in the manner below specified. The circular wall and arched bottom of chamber shall be nine (9") inches thick, of two rings of brick laid with full joints, the walls begin- ning IS" below the top of the finished basement iloor. The drain from this chamber shall be cleaned and the inner ring of brick in the bottom and eight courses on the sides shall be laid in hot asphalt mastic. The lower part of the hydrant sball be coated to the same heigbt with asphalt mastic. Back Filling: Execute all back filling required after installation of column foun- dation piers and other foundations, footings, walls, piers and pits, to bring the earth to proper level and grades for subsequent work. All filling shall be well flooded and solidly tamped in layers, to pre- vent settlement. Repairing Pavements: Carefully repair any and all damage to the street and avenue pavements adjacent to the premises that may have resulted from any operation connected with the erection of this building, including repairs necessitated by the making of service connections to sewers, water and gas mains and other public utilities. Repairs shall be made with first class materials in a manner to place the streets without exception in as good condition as that in which they were at the commencement of the work, and to the approval of the city authorities having control. Temporary Enclosure Shelter and Sidewalk: fcuild a temporary wood construction enclosure, sidewalk and shelter surrounding the premises along the street fronts as a protec- 26 tion for the public, maintaining the same during building operations and until the Architect consents to their removal. The enclosures and shelters shall be of wood construction built in accordance with details shown by the drawings, substantially erected, firmly and solidly braced, and so located and arranged as to afford proper protection from falling material and debris. All exposed por- tions of the wood work forming the sidewalk passages shall be con- structed of surfaced lumber, and after erection shall be treated to two coats of white lead and linseed oil, color as directed. The roof and the posts supporting the shelter shall be strong enough to carry a load of 600 pounds per square foot, so that all con- tractors on the building may use it in handling their materials and to work from. The passage ways shall be properly wired by the Contractor for electric lighting and provided with lamps spaced not to exceed 12 feet apart, or as approved by the Architect, and the Contractor shall furnish all current and maintain such lighting as long as the sidewalk shelters remain in place, keeping the lamps lighted after dark through- out the night. At completion of the building, and when approved by the Archi- tect, the shelters shall be taken down and removed from the premises, the materials becoming the property of the Contractor. Temporary Water Closets: Build an approved temporary water closet enclosure in basement, eighth, sixteenth, twenty-fourth and thirty-second stories for the use of all workmen engaged on the building, and move same from time to time during the progress of the work as may be necessary in the judg- ment of the Architect, and when no longer needed take down and remove from the premises. Lights : Furnish, install and maintain, as long as required, a sufficient number of arc or incandescent lamps to illuminate the premises to permit working a force of men over the entire area throughout the night, to advance the work in the contract. The number and location of lamps shall be subject to the approval of the Architect. All ex- pense in this connection, including cost of current, shall be included in the contract. 27 Concrete Woek. Extent of Stone Concrete Work: All cofferdam walls, column foundation caissons and other founda- tions, footings, piers, retaining walls, curb walls, dwarf walls, pits and similar work below grade, the filling between and encasing of all grillage beams, girders and steel work in foundations, and all spandrel beams and girder concrete enclosures in walls and cornices, the encasing and fireproofing of beams, girders and columns not enclosed with brick or fireclay tile, the reinforced concrete floor and sidewalk construction and the filling around pipes and conduits through floors, the base for all granolithic sidewalks, the concrete foundations for the bedding of cut stone and terra cotta work and all other work shown stone concrete on the drawings shall be executed with stone concrete. The furring and pitching of the surfaces of all roofs, decks and gutters, and such other work as is so shown by the drawings shall be executed with cinder concrete. Forms and Centers: Furnish and place all necessary forms and centers, moulds, brac- ings and supports for the execution of the stone and cinder concrete work throughout, together with all necessary ties, rods, bars, bolts, nuts and washers, to properly secure, brace and anchor the forms and prevent their springing and giving way. Forms and centers shall be provided in sufficient quantity to per- mit the work to progress as rapidly as required without the necessity of removing the forms from the concrete before it has properly set. All forms shall be made of surfaced, matched lumber put together in a most rigid and substantial manner, well braced, bolted and tied together wherever necessary to prevent springing, set plumb, level or inclined, true to the lines and radii required to produce in the fin- ished concrete work the forms, sections, outlines and profiles, and to have it in the position and of the thickness required by the various plans, elevations and details. Extraordinary precautions shall be taken to insure that forms are securely bolted, clamped and anchored to prevent bulging or giv- ing way while the concrete is being deposited. 28 Concrete : Stone concrete for all work in this contract shall be made of Port- land cement, sand and broken stone in the proportions hereinafter specified. For cinder concrete work cinders shall be substituted as an aggregate in place of broken stone. Cinders : All cinders for concrete work shall be clean, black cinders from which all clinkers have been removed, free from all vegetable or other unsuitable matter. Sand: All sand shall be clean, silicious sand, free from clay, loam, or other deleterious material. It shall pass a J" screen and not more than six per cent. (6%) shall pass a sieve having 100 meshes per linear inch. Stone : Crushed or broken stone shall be clean granite, trap or limestone free from pyrites or other deleterious impurities and except as other- wise herein specified, of a size that will pass through a 2" screen. The run of the crusher may be used but all dust must be extracted. For the filling of the working chamber and elsewhere as required the Con- tractor shall furnish small size stone. Gravel : Gravel for concrete shall be clean washed quartz gravel varying in size from V to 1\" in greatest dimensions and shall be free from sand, loam or other impurities. Water: All water used in mixing concrete shall be from the city water Bupply. Cement: All cement for concrete work must be the best quality of Amer- ican Portland cement, of a manufacture that will meet the tests here- inafter specified. All cements shall be delivered on the premises in original pact ages, bearing the brand and name of the manufacturer. 29 Inspection and Testing of Cement: All Portland cement shall be subject to inspection, the Architect reserving the right to take samples for testing, say, six (6) samples from each carload lot. Tests shall be made representing one hundred barrels of cement. Sufficient cement shall be kept on hand in suitable store rooms, well protected against dampness, to allow for seven days' tests without interfering with the progress of the work. All rejected lots shall be at once removed from the work by the Contractor . The tests shall be made by a responsible and experienced labora- tory engineer selected by the Architect, and shall conform in all re- spects to the recommendations of the Committee of the American So- ciety of Civil Engineers on a "Uniform System for Tests of Cement." All expenses incurred in making tests shall be borne by the Con- tractor. Specific Gravity: The specific gravity of Portland cement, thoroughly dried at 100 degrees C, shall be not less than 3.10. Fineness: It shall leave a residue of not more than 8 per cent, by weight on the No. 100, and not more than 25 per cent, on the No. 200 sieve. Time of Setting: It shall develop initial set in not less than thirty minutes and must develop hard set in not less than one hour nor more than ten hours. Color: Color shall be uniform throughout. Tensile Strength: The minimum requirements for tensile strength for briquettes one inch square in section shall be within the following limits, and shall show no retrogression in strength within the period specified : 30 Neat Cement. Minimum Age. Strength. 24 hours in moist air 150-200 lbs. 7 days (1 day in moist air, G days in water) 450-550 lbs. 28 days (1 day in moist air, 27 days in -water) . . . 700 lbs. One Part Cement, Three Parts Sand : 7 days (1 day in moist air, 6 days in water) 200 lbs. 28 days (1 day in moist air, 27 days in water) 300 lbs. The sand in these tests shall be the kind intended to be used in the actual work. Cement failing to meet the seven-day requirements shall be held awaiting the results of the twenty-eight day test before rejec- tion. Constancy of Volume: Pats of neat cement about three inches in diameter, one-half inch thick at the center, and tapering to a thin edge, shall be kept in moist air for a period of twenty-four hours. (a) A pat shall then be kept in air at normal temperature and observed at intervals for at least twenty-eight days. (b) Another pat shall be kept in water maintained as near 70 degrees Fahr. as practicable, and observed at intervals for at least twenty-eight days. (c) A third pat shall be exposed in any convenient way in an atmosphere of steam, above boiling water, in a loosely closed vessel for five hours. These pats to satisfactorily pass the requirements shall remain hard and show no signs of distortion, checking, cracking or disinte- gration. Sulphuric Acid and Magnesia: The cement shall not contain more than 1.75 per cent, of anhy- drous sulphuric acid (SO,), nor more than 4 per cent, of magnesia (MgO). Composition of Concrete: Concrete for the various purposes shall be mixed in the following proportions : 31 Class "A" concrete shall be composed by volume of one part of cement, two parts of sand and four parts of broken stone or gravel. Class "B" concrete shall be composed of one part of cement, two and one-half parts of sand and five parts of broken stone or gravel. Class "C" concrete shall be composed of one part of cement, three parts of sand and five parts of broken stone or gravel. Class "D" concrete shall be composed of one part of cement, three parts of sand and five parts of crushed hollow tile or brick. Class "E" concrete shall be composed of one part of cement, three parts of sand and five parts of clean cinders. The above proportions are by volume, the cement measured com- pacted as in original packages. In proportioning the concrete four cubic feet shall be considered the equivalent of four bags or one barrel of cement, 95 pounds of ce- ment shall be furnished in each bag. All concrete shall be mixed in a revolving batch mixer. Materials shall be measured accurately in boxes, if required. Sufficient water should be added to make a plastic mixture. For all caissons and cofferdam walls Class "A" concrete shall be used. For all curb walls and interior retaining walls Class "B" con- crete shall be used. For filling between and encasing grillage beams, girders, and other steel in foundations, the concrete shall be Class "A" concrete, stone of a size to pass a f" mesh. For bedding grillage beams use a grout of one (1) part cement to one (1) part sand. For filling of columns enclosed in hollow tile masonry, the con- crete shall be Class "D." For the concrete base for all cement, marble, quarry and ceramic tile floors, Class "E" concrete shall be used. Mixing: The concrete for this work shall be machine mixed, using for this purpose rotary mixers of a type permitting the definite proportioning of the materials before they enter the mixer, and which makes a suffi- cient number of revolutions per minute to thoroughly mix and incor- 32 porate the entire mass. The mixers must be of sufficient capacity to insure rapid handling of the concrete work. The mixing must continue until the mass is thoroughly worked, the grout evenly distributed through the stone, and each stone thoroughly coated therewith. The concrete shall be deposited in the forms immediately after mixing, before it has begun to set, and no more shall be mixed at one time than can immediately be used. Retempering Concrete: Under no circumstances will the Contractor be permitted to re- temper and use concrete or grout which has taken an initial set. All such concrete will be rejected and shall at once be removed from the premises. i Depositing Concrete: The concrete shall be deposited in the forms, evenly distributed and sufficiently worked to ensure a compact and homogenous body. It shall be deposited quite wet so as to require no tamping. In close quarters, especial care shall be taken to work the concrete into all voids and cavities and between and around beams and reinforcements, to prevent lodgment, secure perfect contact with the metal and obtain a mass of uniform density free from voids and cavities. Concrete shall not be thrown into the forms from a height but deposited care- fully in a manner that will not cause a separation of the stone from the grout. Depositing shall be continuous and uninterrupted as far as prac- ticable and in case of any suspension of the operation the surface shall be properly protected, and before depositing is resumed shall be made clean, dampened and slushed over with a grout of neat cement to insure the adhesion of the fresh concrete. As far as possible all concrete shall be deposited in a continuous operation. The trough method of distributing or conveying concrete will not be permitted. Concrete Surfaces: All surfaces of concrete which are to be plastered shall be left rough to receive the plaster. Other surfaces of concrete shall be fin- ished smooth. 33 Steel in Foundations: Set and bed all grillage beams and girders in grout on tbe con- crete foundation and fill between and enclose beams and girders witb concrete so tbat all portions of the steel work will be completely im- bedded in concrete witb tbe concrete in no case less tban four inches beyond the edge of the metal. The caissons and walls which are to receive the grillage beams and sboes shall be brought to proper elevations and made perfectly level and true, and the steel members shall be blocked up and set to the correct levels for grouting, which sball be executed witb a one and one cement and sand mortar as hereinbefore specified. Great care must be taken to insure that all the shoes and beams have a full and perfect bearing below and a level surface on top, and that they are set accurately to proper levels. Filling and enclosure of the beams and girders on foundations shall be executed in a most careful manner to insure a uniform contact between steel and concrete. Concrete mixture shall be Class "A" stone to pass §" mesh. New Connections Through Walls: At such points in the exterior walls and curb walls as shall be deemed proper by the Architect, the Contractor shall build openings or furnish and build in suitable sleeve pipes for the admission through the wall of water, sewer and gas pipes, electric and other conduits. These openings shall be temporarily closed with brick, laid dry, and finished on the outside with asphalt. Dwarf Walls: Build dwarf walls in basement wherever necessary to retain earth at the meeting of a higher and a lower floor level. Concrete mixture shall be Class "B" stone to pass 2" ring. Footings: Footings of concrete for all walls throughout which rest on ground shall be built as shown, of size, form and section as indicated by the drawings. Concrete mixture shall be Class "B" stone to pass 2" ring. 34 Pits and Trenches: Build all trenches and all pits for elevators as shown and required. Concrete mixture shall be Class "C" stone to pass 2" ring. Conereete Fireproofing : Wherever so shown by the drawings the steel beams, girders, and other structural members, including spandrel steel work, shall be filled in, encased and fireproofed with concrete, which shall be de- posited with great care, to insure perfect contact between concrete and metal. Concrete mixture shall be Class "C" stone to pass a £" mesh. Encasing of Columns: All columns so shown shall be fireproofed with stone, the concrete work finishing square or circular, or of irregular form as designated. Where so shown or required for the installation of vent pipes, the outline of the concrete fireproof enclosure shall follow the section out- line of the steel columns, leaving chases between the column flanges for the installation of pipes and ducts. The surfaces of column fireproofing shall finish straight and plumb, true to the form indicated. Where the column enclosures are shown to be of concrete, carry the concrete enclosure entire height of story. Concrete mixture shall be Class "C" stone to pass f" mesh. Beam and Girder Encasing, Spandrel Concrete Work: Steel beams, girders, channels, angles, and other members, which are to be fireproofed with concrete, shall be provided with proper anchors and shall have the lower flanges or the entire beam surrounded with No. 18 wire cloth, or expanded metal lath, as may be necessary to properly secure the concrete to the steel, which shall be placed in position before the concrete is deposited around same. Great care shall be taken in depositing the concrete to see that the wire cloth re- tains its position and is thoroughly embedded in the concrete in a manner to give the greatest efficiency. The concrete for the soffit protection of beams shall be run in place wet, poured from one side only, and not applied in the form of made- up slabs. 35 Execute all concrete enclosure work with care, in strict conformity with details, and in a manner to thoroughly and completely fireproof the members throughout. Concrete mixture shall be Class "D" aggregate brick or crushed tile. The concreting of beams and girders in 1st floor spandrels shall be executed as ahove and as the drawings indicate, with the concrete brought to the proper levels for the bedding of brick, terra cotta and other work, and where so shown the concrete shall be filled in between beams and girders, brought to the proper levels for the bedding of the cut stone and other materials as shown. Concrete mixture shall be Class "C," the stone being of a size to pass a \" mesh. Pipes and Ducts Through Floors: After the installation of the telephone, telegraph, electric lighting and other conduits in shafts, and of thimbles and ducts through floors, fill in the openings through floors around conduits and ducts the entire thickness of the floor with concrete, bringing same to the proper level for the marble floors or the cement floor finish hereinafter specified. Wherever individual pipes of any character pass through floors, fill in all voids around same, so as to thoroughly fireproof all struc- tural members. Concrete mixture shall be Class "D." Sprinkler Pipe Enclosure: This Contractor shall enclose all horizontal sprinkler pipes with a Class "D" concrete. The enclosure shall be made so as to completely encase the pipes with concrete over and around all pipes. Bedding and Backing for Other Materials: Bring all concrete walls, concrete enclosures, spandrel and other concrete work to correct heights for the proper bedding of the cut stone, brick work, terra cotta, ornamental iron, and other inaterials, and back 6ame up in a solid and workmanlike manner, as shown by the drawings. Grounds in Concrete Work: All grounds, bolts, anchors, sleepers, etc., required to properly se- cure wood trim, and other work will be furnished as specified under Carpentry, and where same engage or are to be built into concrete work, will be installed or so disposed that they will be built into the concrete, thus making the anchorage solid and substantial. Reinforced Sidewalk and Floor Construction: The sidewalks on the four street fronts shall be of reinforced con- crete construction, carried by the steel beams as shown by details in the general drawings and steel diagrams, which shall be strictly fol- lowed as regards constructive details and reinforcement. Similar con- struction as detailed shall be employed for the floors over the elevator shafts in elevator machine rooms and pent houses and for any other floors shown to be reinforced concrete. All reinforcing rods shall be of the sizes called for by the details, located and spaced as shown, hooked over beams or otherwise an- chored wherever possible. Cement grout shall be used for that portion of the slabs below the reinforcing rods and concrete for the balance of the slabs. The concrete shall be carefully deposited so that the reinforcing rods will retain their proper position in the concrete and become thoroughly embedded in a manner to give the greatest efficiency. All steel beams occurring in reinforced concrete construction shall be encased with concrete as shown by the details and hereinbefore de- scribed under the head of "Beam and Girder Encasing." All slabs shall be of the thickness shown, made level on top to re- ceive the asphalt waterproofing course hereinafter specified finished on top with a one and one-half inch (1-J") cement finish as hereinafter specified for floors to give the thickness of slab as shown by the draw- ings. The reinforced slabs in floors over elevator shafts shall have a 1" cement finish as herein specified for floors. Concrete mixture shall be class "C," stone to pass \" mesh. Reinforcing Rods: All rods and other reinforcing material for reinforced concrete sidewalk and floor construction, reinforced concrete walls, and where- 37 ever shown or required, shall he of medium steel of ultimate tensile strength 56,000 to 64,000 pounds and of the several sizes shown by the various details. Reinforcing rods shall not he painted, hut shall be cleaned and freed from scale and rust before embedding in the concrete. Cinder Foundation for Floors in Sub-Sub and Sub-Basement, Cinder Fill: All floors in the sub-sub and sub-basement resting on the ground shall have a cinder foundation or bed not less than 6" thick. The Contractor shall first see that all sewers, pipes and other ground work are in place, execute the back filling and bring the earth to proper subgrade, and shall then spread in place a layer of clean black cinders free from all vegetable and other unsuitable matter, which when solidly tamped shall be no less than the thickness shown by the details. All slopes to drain shall be provided for in the formation of the cinder bed so that the concrete base will be uniformly of the required thickness. In lieu of cinders, clean coarse gravel may be substituted subject to the Architect's approval and if used the gravel layer must be of the same thickness as shown for cinders. Concrete Base for Floors: Furnish in place cinder concrete base for all cement floors, the ceramic and quarry tile, and marble floors throughout. For the cement floors the concrete shall be deposited on top of the cinder foundations, tile arches or concrete slab construction, as the case may be, in layers of the thickness required by details, with the upper surface parallel to and one (1) inch below the finished floor line preparatory to the cement finish hereinafter specified. For the marble, the ceramic and quarry tile floors the concrete shall be deposited on the tile arches or concrete slab construction and brought parallel to and within two (2) inches below the finished floor line. For the quarry tile floors in the engine and pump rooms the con- crete shall be deposited on the cinder foundation and brought parallel 38 to and within two inches of the finished floor surface, thickness as shown. For the brick paving in the boiler room the concrete shall be brought parallel to and within (3" of the finished floor surface, thickness as shown by drawings. The Contractor shall study carefully the details of the various floor constructions and execute the work in accordance therewith. Concrete mixture for this purpose, Class "E." Concrete Base for Sidewalk: For the cement sidewalks the concrete shall de deposited on top of the asphalt course over the reinforced slab construction, bring- ing same parallel to and within one and one-half inches of the finished sidewalk surface, all preparatory for the cement finish. Cement Finish: The top finish or wearing surface for all cement floors shall be composed of two (2) parts of Portland cement and three (3) parts of sand, cement and sand as specified for concrete work, thoroughly mixed dry, screened and wetted to the proper consistency, using no more water than is necessary. The sprinkling of dry cement on the surface while troweling will not be permitted. The finish shall be one (1) inch in thickness unless otherwise shown or specified. It shall be spread on the concrete immediately after mixing and before the concrete has commenced to set, and floated and troweled to a perfectly smooth, hard and even surface, finishing neatly against all walls, columns, bases, etc., to make a first class job. The floor shall be divided up in sections approximately four feet square, the joints cut clear through the cement dressing finish after which the exposed top edge of joints shall be smoothed over and fin- ished perfectly flush to present a floor without joints. All floors shall be neatly finished against all walls, columns, etc., engaging with the plaster wall surface, and preparatory for the wood or cement base as the case may be. All joints shall be run with an approved jointer. Granolithic Finish: The top finish or wearing surface for all sidewalks, the sub-sub and the sub-basement floors, except where otherwise shown or specified, 39 shall be composed of two (2) parts Portland cement as specified for concrete work and three (3) parts perfectly clean granite screenings, commonly known as No. 5, thoroughly mixed dry, wetted to the proper consistency and applied in the manner herein specified for cement finish. Floor Gutters: Gutters shall he formed in the cement floor of the sub-sub and sub- basement along the inner side of the exterior walls, properly pitched and connected to drains as shown by details. Roof Furring: All roof surfaces shall be furred with cinder concrete, forming all counter-roofs, saddles, slopes, hips, valleys and pitches to downspouts as the drawings indicate; and before the concrete has begun to set it shall be finished with a cement top dressing the same as above speci- fied for cement floors, but one-half (i) inch in thickness, troweled smooth to receive the tile roofing work. Concrete mixture "E" cinder aggregate. Gutter Furring: The "built in" gutters the offset between the exterior building walls at the 36th floor and wherever so shown or required by the draw- ings shall be furred, pitched and graded to downspouts with Class "E" concrete as indicated by the details and finished with cement top dress- ing as above specified for roofs, preparatory for the copper lining specified under Roofing and Sheet Metal Work. 'Waterproofing of Sidewalks: Three and one-half (3-}) inches below the finished sidewalk surface on the reinforced concrete construction lay a five-ply membraneous water-proofing of a type and character satisfactory to the Architect, carrying same in a continuous sheet over the entire surface, flashed and properly connected at walls in a manner to absolutely prevent leakage of surface water into the basement. Waterproofing of Basement: The Contractor shall waterproof in a most thorough and complete manner all portions of the basements below street grade, carrying the 40 waterproofing through all walls, floors, sumps, pits and trenches so as to make the entire basements watertight and moisture proof. The waterproofing shall be accomplished by methods and with materials satisfactory to the Architect. The Contractor will be re- quired to furnish a satisfactory written guaranty warranting the work against all leakage for and during a period of ten (10) years from and after completion and acceptance of the work, as evidenced by the final certificate, and binding himself to repair and make good at his own expense any and all leaks that may develop in the waterproofing within said period. Brick Work. Extent of Brick "Work: All backing for cut stone, marble, terra cotta, iron and steel and all piers, walls, spandrels, arches, column enclosures, fireproofing and similar work not shown or specified to be of concrete or fire clay tile shall be executed with brick of the various kinds indicated and herein- after specified. Terra Cotta Work: All terra cotta for this building will be furnished and set as herein specified under Terra Cotta. Back up all terra cotta and build in all anchors, making the work absolutely solid and substantial. "Wood Centering: Arched openings in brickwork shall be turned on wood centers, furnishing all centers required, which shall be strongly constructed, made to fit accurately to the work, well supported and rigidly braced so as to carry all loads until the brickwork is set. Centers shall not be struck until the Architect approves. At completion of the work remove all centers from the premises. Pressed Brick: The exterior wall surfaces of all street fronts, courts, and pent house walls except where terra cotta, granite and marble are shown, shall be faced with a standard size, impervious, vitrified pressed brick of a color as selected by the Architect, for which purposes samples shall be submitted to Architect for approval. 41 All parapet walls shall be faced on the side toward the roof with pressed brick as above specified. The exposed wall and column surface of the boiler room shall be faced with a vitrified impervious pressed brick, color as selected by the Architect. Enamel Brick: The exposed wall and column surfaces of the engine room shall be faced with the 4"xl2" size enamel brick, of color approved by the Architect. Use 2" radius brick at all outer corners. All enamel brick shall be uniform in size, even and perfect in surface finish and color, free from cracks, craze, spawls or other im- perfections, and the enamel shall be guaranteed for a period of ten years not to craze or spawl off. All brick that develops defects within (5) five years from and after the completion and acceptance of the work shall be replaced by the Contractor at his own expense. Hollow Brick: The inner four inches of all exterior brick walls, except where indicated as filled with tile or expanded metal lath and plaster, shall be laid up with a first-class hollow brick, equal to brick manufactured by the Delaware (Ohio) Hollow Brick Company. Paving Brick: The boiler room floor shall be paved with hard vitrified paving brick, the brick costing not less than $30 per M. The brick shall be bedded on the concrete foundations on a two-inch sand cushion, well tamped into place with the joints reduced to a minimum and after the brick are laid, the joints shall be grouted with a Portland cement grout, flush with the top surface. Floors when finished shall be absolutely level and sound. Common Brick: All work tinted or cross-hatched in red on the drawings, or other- wise indicated to be brickwork, which is not shown or specified to be of pressed or hollow brick, shall be laid up with a selected first quality, sound, hard, common brick of a make approved by the Architect. 42 Samples : Samples of all the various kinds of brick herein mentioned shall be submitted to the Architect for approval and the samples selected and approved shall be filed with the Architect and taken as a stand- ard of the materials which are to be furnished for this work. All brick brought on the premises for the work must be equal in every respect to the approved samples. Mortar: Furnish all mortar necessary for all masonry work of every de- scription. The mortar for all hollow and common brickwork above grade, except as otherwise specified, shall be composed of one (1) part of Portland cement of same brand as used for concrete work, and four (4) parts of clean, sharp, coarse sand thoroughly mixed dry in a box, wet to the proper consistency, tempered with 6 % lime paste (Limoid) to make it work smoothly and immediately used. No pump sand shall be used for making mortar. Below grade the mortar shall be as above specified, omitting the lime paste or limoid. The mortar for all terra cotta work, enameled and pressed brick work and for the brick backing of granite and marble work shall be com- posed of one (1) part Portland cement as specified for concrete work, one (1) part lime putty and two parts fine, sharp, clean, white sand of the very best quality, the sand and cement mixed dry and wetted to proper consistency and the lime putty then added. "Where required the mortar shall be colored with mineral pig- ments to match the materials. For the backing up of granite and marble work the mortar shall be made of non-staining cement, brand as approved by the Architect. All lime putty used in mortar for pointing shall be screened through a very fine sieve to remove all lumps No more mortar shall be mixed at one time than can immediately be used. The retempering of mortar which has commenced to set will not be permitted. All such mortar which has frozen in the box shall be thrown out and not used in the work. 43 Bricklaying: All brick work shall be laid to the proper lines, each pier and i'all kept plumb, each course level, with the joints accurately kept, all brick well bedded with full mortar joints throughout. All common and hollow brick shall be laid with shove joints on full mortar beds, all interstices being thoroughly filled with mortar; whole brick shall be used and all brick shall be well wetted before being laid except in freezing weather. A header course of whole brick shall be laid every sixth course the whole length of the wall and lapped through the wall in every case; hollow brick, where used, shall be built in and bonded with the com- mon brick in the regular manner. Where necessary to level brick courses to meet face brick work, chipped courses shall be used if the difference in level is more than £ inch, and tile courses when less than f inch. All mortar joints ex- posed on the exterior of the building shall be struck with a jointer. Face brick whether pressed or enameled shall be laid in all cases from an exterior scaffold, in the best possible manner, with full and level beds, faces plumb and joints neatly pointed; the brick shall be laid all stretchers in the face of the wall except for necessary return headers at jambs, reveals and returns and shall be bonded with the backing every seventh course by a course of square bond brick having a depth into the wall equal to the stretch. Metal ties or anchors will in no case be permitted. Pointing: All face brick shall be pointed up in a neat and first-class manner as the work progresses and left with the workmanship perfect in every respect. Lime putty with white Portland cement shall be used for pointing enamel brick. Backing Up Granite, Marble and Terra Cotta: Except as otherwise shown by the drawings all granite, marble and terra cotta shall be backed up solidly with brick work, all anchors con- 44 neeting same with brick work being securely built into tne racking. The brick work shall be built into all voids of the terra cotta, filling same completely so as to make a solid and substantial piece of work. Where so shown ornamental iron work, steel and other materials shall be backed up with brick work in the manner indicated by the de- tails. Column Enclosures: Structural columns occurring in exterior walls and wherever so shown shall, unless otherwise specified, be enclosed with brick work as the drawings indicate, the enclosures carried up plumb and true with not less than two inch space between the brick and extreme edges of the metal in all cases. Cleaning Down: Upon completion of the building and when so ordered, clean down and repoint all brick work and other masonry where so required and leave all surfaces uniformly clean and in perfect condition to the en- tire satisfaction of the Architect. Unit Prices: Name one price only for any additions to or deductions from this contract for the respective materials and labor named below, said price to govern until the completion of all work called for herein and its ac- ceptance by the Architect: General excavation to underside of basement floors, per cubic yard $ Excavation below basement floor line, not including pier wells, per cubic yard $ Excavating quicksand pockets and filling same with concrete (made proportions one to two to four), per cu. ft $ Concrete above basement floor line, per cubic foot, includings forms Class A cement $.......... Concrete above basement floor line, per cubic foot, including forms Class B cement $ Concrete below basement floor line, per cubic foot, including forms Class A cement $ Concrete below basement floor line, per cubic foot, including forms Class B $ 45 Reinforced concrete floor construction, per superfi- cial foot, including forms, reinforcement and the cement floor finish $. Reinforced concrete sidewalk construction, per su- perficial foot, including forms, reinforcement and waterproofing . $. Cement floor, per sq. ft., including concrete base and cement finish $ . Cement floor, per sq. ft., including cinder concrete base, cement finish $. Granolithic sidewalk, per square foot, including con- crete base, granolithic finish but not including structural slab , $. Cinder concrete foundations for marble, quarry and ceramic tile floors to within 2 inches of finished surface per sq. ft $. Cinder concrete roof furring, per cu. ft $. Concrete fireproof column enclosures per foot height of column $. Common brick, per M., 21 brick per actual cubic foot measurement $. Hollow brick, per M., 21 brick per actual cubic foot measurement $. Pressed brick, per M., 21 brick per actual cubic foot measurement $. Enameled brick, Norman size, per M., 3 brick per actual square foot measurement $. Paving brick, 20 brick per actual cubic foot measure- ment $. 46 STRUCTURAL STEEL. In General: Furnish all labor and materials to execute and install the Struc- tural Steel in accordance with the accompanying drawings and these specifications. Scope of This Work: In this work shall be included all steel, cast iron, cast steel, etc., to complete the building as shown and specified. Shop Drawings: All details and shop drawings shall be made by the Contractor at his own expense and shall be submitted to the Architect for his written approval before proceeding with the work. This approval, however, shall not relieve the Contractor of re- sponsibility for errors in details and connections, as the Architect's checking of the details is only a precautionary measure, and it is not intended that this checking shall go into every detail of the shop work. The Contractor shall furnish the Architect with two complete sets of detail drawings and shall also furnish the Architect with complete mill orders made out in such a way that by using the framing plans and this mill order together the materials can be identified, in order to enable the Inspector to trace it through the mill and keep the Archi- tect informed as to the progress of the work in the mill as well as in the shop. Each shipment of drawings must be accompanied by a letter of transmission giving list of the number of drawings. Each drawing must be marked with the name of the building, and each series num- bered consecutively for ready reference and convenience. Shop and Mill Markings: Beams on framing plans shall be given a number in connection with the floor mark, and the mill order shall show the same marks. The columns shall be given a number in connection with the story mark, and all material in mill order belonging to the respective col- umns, shall be given the corresponding number and mark. See further under heading of "INSPECTION." 47 Steel: All materials shall be steel, except separators between beams, which shall be cast iron, unless specifically shown otherwise. Soft Steel: All bolts, tie-rods, anchors and rivets shall be of soft steel. Cast Iron: All separators between beams shall be of cast iron unless other- wise shown on plans. Cast Steel: If cast steel is shown it shall be Open Hearth steel as herein speci- fied. Castings must be free from blow-holes and other imperfections detrimental to the strength of the castings. All steel castings must be annealed. Foundation Work: All beams in foundation shall be of steel as shown on foundation plan, and shall be delivered and set by the Contractor in the same man- ner as the balance of the steel. Anchors : All beams resting on masonry shall have lug anchors riveted to the beams. "Wall Plates: Bearing plates for beams will be bedded in cement mortar and set in place as specified under masonry. For sizes of all bearing plates see plans. Columns : All columns are to be standard built-up columns, as shown on plans. Flanges shall be made up, preferably, of the largest obtainable units; if built up of units of thicknesses admitting of punching, the boles for the rivets shall be punched smaller than required for the size of rivets and shall then be reamed out to the required size after the parts of the column has been assembled, so as to insure perfect holes without injuring the material around it. In case the column is built up of such units as will not allow of 48 any punching, all the holes shall be drilled in one operation through the flange plates and the angles. For a built-up column, two (2) web plates may be used with four (4) 8x8 angles, in which case four rows of rivets will be required in each flange of the column, and four (4) rows of rivets through the web, mak- ing altogether sixteen (16) rows of rivets in the full column section. All columns shall be made to splice in two story lengths as shown on the column diagram. Column splices shall be made as shown by typical details. All column joints shall be milled square to axis of columns and splice plates fitted and reamed in the shop to insure perfect fit in the field. In no case shall rivets be spaced over six (6) inches center to center in any line of rivets, and no rivets shall be closer together than three (3) times the diameter of the rivet. General details for con- nection of girders and beams to columns to be as shown on diagrams. Column diagram calls for sizes of rivets for the columns. For beams and girders §" or £" shall be used. Girders : All girders, as well as brackets, where such is shown on the plans for this building, shall be made with special care in such manner as to insure tbat the surface of the ends of the girders comes square with the axis — this to insure a plumb column Shoes: All column shoes are to be special built, or steel slabs, as shown on the plans. Quality of Material: All material for columns and riveted work shall be made by the Open Hearth process. All beams may be made either by the Open Hearth or Bessemer processes. The material must be uniform in qual- ity and must not contain over 0.08 of one (1) per cent, of phosphor for Bessemer steel nor more than 0.06 of one (1) per cent, of phos- phor for Open Hearth process steel. The steel shall have an ultimate strength of 65,000 pounds per square inch and shall not vary from this more than 5,000 pounds per square inch either way. It shall have an elastic limit of not less than 49 one-half of the ultimate strength ; an elongation of 25 per cent, in eight (8) inches for test pieces, three-quarter (f ) inch thick by one and one- half (H") inch wide with a reduction of one (1) per cent, in the elong- ation for each \" increase in thickness of test piece ; so that for a 2" thick test piece the elongation shall be not less than twenty (20) per cent, in eight (8) inches. Test pieces to be cut from the rolled sections and full thickness of the section, one and one-half (14") inch wide, and reduction of area shall be not less than forty-five (45) per cent, on a test piece of f"xl£". For thicker test pieces a reduction of one (1) per cent, in the reduction for each additional \" in thickness will be allowed, so that for a test piece 14"xl4" the reduction in area will be forty (40) per cent, and for a test piece 2"x4£" the reduction will be thirty -five per cent. All blooms, billets or slabs shall be examined for surface defects, flaws, or blow-holes before rolling into finished section, and such chip- pings and alterations made as will insure perfect solidity in the rolled sections. A test from the finished material will be required representing each blow or cast. A duplicate test piece from each blow or cast will be required. It must stand cold bending 180 degrees over a mandrel, the diameter of which is equal to one and one-half {\\) times the original thickness of the specimen, without showing sign of rupture on either convex or concave side of curve. After being heated to a dark cherry and quenched in water 180 degrees Fahrenheit, it must stand cold bending as before. The original blow or cast number must be stamped on each ingot from said blow or cast, and the same number must be stamped on each piece of the finished material from said blow or cast. No steel beams or angles shall be heated in a forge or other fire after being rolled, but shall be worked cold, unless subsequently an- nealed. Field Connections: All field connections shall be riveted except in cases where rivets cannot be driven, in such cases turned bolts shall be used. This Contractor shall bill and furnish rivets for all field connec- tions as well as turned bolts for any such connection of and to columns 50 and elsewhere where rivets cannot be driven. In such cases the Con- tractor shall ream holes for such connections. Punching and Riveting : For all columns, rivet spacing must be accurately laid out by suit- able templates, and sub-punched, if material is of such thickness as to allow punching. After the different units have been assembled the holes for the rivets shall be reamed out to the proper size for the size of the rivets, as shown on the plans, this applies to heavy built-up mem- bers (columns and girders). All other rivets in this work must be accurately spaced so that upon assembling of adjacent pieces a cold rivet of the size intended for the work can be inserted in the hole. Drifting will not be allowed, except as may be required in assemb- ling. Kivets with cracked head or heads not concentric with the center of shafts, or rivets found loose must be cut out. All rivet holes must be so accurately punched that when several parts forming a member are assembled a rivet 1/16 inch less in diame- ter than the hole can enter without drawing or straining the steel by drifts. If this is not the case the holes must be reamed. The rivets when driven must completely fill the holes, and heads must be hemispherical and of uniform size for the same size rivets throughout the work ; and they must be full and neatly formed. When- ever possible all rivets must be machine driven. So far as possible all shop rivets shall be driven by direct acting power machines which are capable of holding on to the rivets after up- setting is completed. When it is found necessary to cut out rivets it shall be done in a way not to injure the material. No rivets shall be spaced closer than three diameters of rivet, and this shall only be done in extreme cases where it is absolutely neces- sary. Bearing and Shearing Values of Rivets: Shearing values of field rivets shall be 8,000 per square inch, and for shop rivets 10,000 pounds per square inch. Bearing values for shop and field rivets shall be 20,000 pounds per square inch. For wind strains only this value may be increased by 50 per cent. 51 Spandrels : All girders in outside spandrels shall be connected to the columns by web angles, as well as top and bottom angles or brackets. General details for these are shown on drawings. Smoke Stack: The smoke stack shall be 11' 0" inside diameter as shown on the drawings. Angle irons on interior of the stack for the support of the stack lining as shown and specified. Stack to be as per drawings sup- ported on steel frame every second floor. Terra Cotta and Stone Anchors: Wherever anchors are shown on the plans for terra cotta or stone through webs of beams or girders, holes shall be placed six (6) inches on centers and be of the same diameter as other punching in the re- spective members. Fainting : All steel and cast iron before leaving the shop shall have all scales, rust, etc., cleaned off and then be thoroughly painted with one (1) coat composed of twenty-five (25) pounds of pure thoroughly oxidized red lead to one (1) gallon of pure boiled linseed oil, or other good paint as may be sleeted by the Architect or his representatives. In all cases where surfaces are not accessible after assembling they shall receive two (2) coats of approved paint before assembling. All planed surfaces shall receive one (1) coat of white lead and tallow before shipment. Inspection and Testing: APPOINTMENT : An Inspector will be appointed by the Archi- tect, who shall, in that case, inspect the making of the steel at the mill, as well as the fabricating of same at the Fabricating shop. The Con- tractor to pay for this inspection at the rate of 40c per ton. Facilities : The Contractor shall furnish without extra charge, ample facili- ties for the inspection and testing of all rolled, forged, or cast iron and steel for this building, and shall furnish all test specimens and the use of suitable testing machines. 52 The Architect, or his authorized agents, shall have access to all portions of the mills or shops where work is being done under this con- tract. The Contractor shall furnish to the Inspector complete copies of all orders for material (Iron and Steel) which are placed with the mills; this shall be made out as hereinbefore specified under "General Specifications," the object of this requirement being to enable the In- spector to keep close track of all materials, and know the relative posi- tion of the same in the finished structure. The Contractor shall furnish the Inspector a complete set of all detail drawings after the same shall have been approved by the Archi- tect. Copies of all invoices shall be furnished to the Inspector within twenty-four hours of the time of shipment of accepted material. Duties of Mill Inspector: It shall be the duty of the Inspector to make or witness all of the required physical tests and to obtain from the manufacturer certified copies of all the required chemical analyses. He shall make complete reports to the Architect of all tests and analyses and state if the material represented by the same is accepted or rejected. He shall make a surface inspection of all material and identify the mill or cast number of same. All material from melts or casts not conforming with specifica- tions and all material found defective shall be rejected, while all ma- terial from accepted melts and free from defects will be accepted and the Inspector will place his stamp of acceptance on such materials. The Inspector will make complete reports to the Architect of all materials he has inspected. These reports to include the melt number on all items. These reports shall show what has been accepted and what has been rejected. Weekly reports shall be made to the Architect by the Inspector showing in condensed form the condition and progress on all orders at the several mills and factories doing the work. All reports to be made on forms approved by the Architect. 53 Shop Inspection: All finished work must be inspected and accepted by the Author- ized Inspector before it is loaded on cars for shipment, and it shall be the duty of the Contractor to furnish the Inspector every facility for a careful inspection of all material at any stage of the work he may select. Any defective material or workmanship wherever found, at the shop or building at any time before the completion and acceptance of this contract, shall be rejected regardless of all previous inspection, as the inspection is not intended to relieve the Contractor of respon- sibility, but is a measure of precaution against oversights and errors. Any defective material which is rejected shall be removed and replaced by the Contractor at his own cost, and he shall be further liable for all expense due to delay, caused by such rejections. If the Contractor fails or refuses to replace such defective mater- ial as may be found at any stage of the work, or fails to make good mistakes due to workmanship, the Owner or Architect may go into the open market and purchase the necessary material and may order such work done and charge the cost of the material and work to the Contractor. Mode of Ascertaining the Tonnage of Steel: All columns, girders and riveted work shall be weighed and charged for by actual weight ; all beams, channels and single angles shall be estimated at the theoretical weight, counting only the rivet heads and disregarding coping. The appointed inspector shall certify all weights. Patents : The Contractor hereby agrees to protect and save harmless the Owners from loss or damage by suit or otherwise on account of or by reason of any and all infringements on patents for materials or meth- ods used in the construction of all work called for in this contract. Misfits : All misfits found during erection which are due to errors in the shop shall be promptly reported to the Architect and corrected by Con- tractor. 54 Field Connections: All the field connections shall be riveted throughout the entire structure, unless it is impossible to reach connection with riveting tools ; in which case turned bolts inserted into reamed holes may be used. Fainting: All steel work shall receive one (1) coat of point of a make accept- able to the Architect. All surfaces which are not accessible after erection shall receive one (1) coat of paint before erection. No painting shall be done in wet or freezing weather. The Contractor shall figure on paint equal to twenty-five (25) pounds of best red lead to one (1) gallon of pure Unseed oil. Inspection: The Architect's inspector on the job will inspect all of the field con- nections, and the Contractor shall furnish the Inspector all possible facilities to enable him to properly perform this work. Workmanship : All workmanship must be first-class in every particular. 59 CUT STONE WORK. In General: Furnish all labor and materials to execute and set complete the Cut Stone Work in accordance with the accompanying drawings and as required by this specification. Cut Stone: All granite and marble shall be of a light and uniform color throughout, sound and free from discoloration, knots, sap, rot, shakes, seams, flaws and other defects. Each and every stone shall ring clear when struck with a hammer. Finish: All granite wopk shall have a highly polished finish on all exposed surfaces. All exposed marble surfaces except the carved surfaces shall have a honed finish. Alternate Finish: The Contractor shall state what amount is to be added to Main Bid in case the exposed stone work to the top of the pier cap — a distance approximately 12'0" above sidewalk — is finished with a high polish. Samples : Submit samples of granite and marble, 6"x6"x6", with an eight cut finish on two faces a polished finish on the third and a honed finish on the other face in the manner herein specified for the work. The samples selected by the Architect shall be kept on file in his office, and shall be taken as the standard of material, the Contractor guaranteeing that no portion of the work shall be inferior to the sample in quality and finish. Diagrams : Working drawings and diagrams for the cut stone work shall be made to show all jointing, bond and construction. Regarding the sub- mission and approval of drawings, see General Conditions. 56 Mouldings, Ornament and Carving: All moulded work throughout shall he executed in strict accord- ance with full size details. The finish shall correspond to the general surface finish. All carving shall be executed by the most skillful architectural carvers, closely following details in an artistic and spirited manner, to the entire satisfaction of the Architect. Mouldings shall be cut with care, true to profile throughout, all arrises sharp, carefully membered, so that when the work is set mouldings will be continuous and in per- fect alignment. Depth of Facing: Each stone shall be of full size and depth shown by the drawings and the backs shall be pitched at right angles to the bed and parallel to the face. No piece of ashlar shall be less than four (4) inches thick. Alter- nate courses, wherever possible, shall be of sufficient depth to bond with the brick backing, and projecting courses shall be of sufficient depth to balance on the wall unless hung or anchored to structural steel. Where the cut stone facing of piers passes in front of steel columns the depth of the facing shall be such as to allow for not less, or where the drawings show no intervening brick an allowance shall be made for not less than 2" of masonry. Heads and Returns: All pilasters, reveals, jambs and similar portions shall have full heads or returns and in no case shall exposed heads in cut stone be less than one foot wide unless otherwise detailed. Beds: All stone shall be cut to rest on its natural bed ; the beds shall be full and point dressed to even surfaces and bearings throughout; vertical joints 4". Joints : All joints shall be located exactly where shown on drawings, unless changed by written instructions of the Architect. Any uncertainty as to jointing is to be referred in writing to the Architect for decision. 57 All joints shall be even and true, all arrises sharp and true to line. Bed joints in ashlar shall be one-quarter inch in thickness and the butt joints shall be as small as possible. Jambs and Reveals: All jambs and reveals shall be cut and set square, plumb and true, and shall have the same finish as remainder of work, unless otherwise specified. Lintels : Wherever lintels or spandrel stones are shown or in the nature of the case require to be self-supporting, they shall be single stones span- ning the full opening with proper bearing on the piers at either end. Drips : All projecting courses, sills, belts, cornices and copings shall be cut with drips underneath, so that water will not run down the face of the wall. In case Architect's details do not show proper drips their atten- tion shall be called to the fact before the stone is cut. Washes : All copings, cornices, sills and projecting courses shall be cut with a wash on the upper exposed surface to throw water away from the wall. Haggles: Cut raggles for all window frame water-bars, and wherever shown by drawings or required. Structural Steel: Where cut stone work is to be supported by, hung and anchored to structural steel where so shown, for which execute all cutting, check- ing and fitting necessary to make the cut stone work clear the steel work and to provide for its proper support and anchorage thereto. Anchors, Cramps and Dowels: Furnish and .set all anchors, cramps and dowels, and make all holes and sinkages for same. Anchors shall be at least £"xl£" galvanized iron. Each piece of 58 ashlar shall have at least one (1) anchor, and large pieces shall have at least two (2) anchors each. All cramps and dowels shall be of copper, securely fastened into place. All stone ashlar shall be anchored at least three times in height of story to the structural steel columns. Templates, Centers, Bracing: Furnish and place all templates, centers and bracing required for the proper execution of the work. At completion, remove all centers and false work from the prem- ises. Damp Proof Coating: Before the cut stone is set in the walls each stone shall be coated on the ends, sides and back with a heavy coat of hot asphaltum, E. I. "W., Dehydratine, or some other damp proofing medium approved by the Architect, bringing the same within \" of the exposed face of the stone. The coating shall be evenly and uniformly applied, using care not to get coating on the exposed face of the stone. Mortar : All mortar for setting of the work shall be composed of limoid, non- staining cement and white clean sharp sand, in the proper proportions. Mortar for pointing shall be made of one (1) part white non-stain- ing cement and one (1) part white sand. No mortar which has commenced to set or become hard in the box shall be used in the work ; all such mortar shall be thrown out. Only clean, fresh water shall be used in mixing mortar Setting: The cut stone shall be delivered on the premises promptly and set in place as rapidly as the progress of the work requires. Each and every stone shall have cut into it a Lewis hole or holes for the purpose of setting. Each stone shall be set on a full mortar bed, the mortar furnishing a perfect and even bearing between the stones. 59 Each stone shall be set with a derrick, dropped squarely into place, so that as little shifting as possible will be necessary, hammered down to a solid bed, so that bearing cannot come on front edge of stone, and set perfectly level, plumb and true to line and bond. The bed shall be dampened to prevent too rapid absorption of the water in the mortar and the mortar shall be kept back one-half inch from the face of the stone. Sills shall be carefully bedded at the ends only, and after the work is set and when the Architect so directs the joints shall be filled and pointed up as hereinafter specified. Vertical joints in sills, belt courses, etc., shall be grouted full, using mortar as specified for pointing. The Contractor shall back up all cut stone work with brick or con- crete as fast as it is set and no portion of the ashlar shall be carried up higher than two courses ahead of the backing or adjoining ashlar, except by special permission of the Architect. Boxing: Securely box and protect all projecting courses, jambs, angles, bases, capitals and sills with proper boarding, to save the same from damage during construction. The Contractor shall be solely responsible for any damage to the cut stone that may occur until the building is completed and accepted. At completion, or when so ordered by the Architect, remove all boxing and boarding from the premises. Defacement : Each piece of cut stone shall be sound and perfect and no exposed portions of the work shall show mark of setting tool, spawl, scratch, stain, mar or defacement of any sort. No patching or concealing of defects with composition of any kind or by pieces set in with shellac, will be permitted ; any piece of cut stone showing defect or defacement shall be at once removed by the Con- tractor and replaced. This applies to any defacement that may occur either before or after the work is in place, it being clearly understood that the Con- tractor shall properly protect his work as necessary and leave the same upon completion of the building a first-class piece of work. 60 Cleaning Down and Pointing: At completion and after all danger from frost, the Contractor shall carefully clean down all exposed surfaces of the cut stone work, removing all dirt and mortar stains, and shall rake out all joints at least one-half inch back from the face of the stone, remov- ing all wedges, and then point up the work with cement mortar, mixed as above specified. The mortar shall be strongly driven in with a jointer until the raked out space is entirely filled and moisture appears upon the surface. All joints shall finish flat, recessed back one-eighth inch from the face of the stone, care being taken that no coloring remains on exposed surfaces. Care shall be taken that all joints are of the same shape and size and made straight. The cleaning shall be thoroughly and carefully executed and the work left in perfect condition, free from mortar stain or other de- facement. The use of acids, sapolio or wire brushes in cleaning down is positively forbidden. 61 HOLLOW TILE FIREPROOFING. In General: Furnish all labor and materials to execute and install complete the hollow tile fireproofing work in accordance with the accompanying drawings and as required by this specification. Scope of Contract: Furnish and install all hollow tile work and fireproofing, floors, floor furring and blocking, partitions, furring for walls and pipe en- closures and the encasing of all columns, beams, girders and struc- tural steel of every sort, not shown enclosed in brick or concrete, throughout the building. Building Regulations : It is understood that the Contractor shall comply with all ordi- nances and the requirements of the Building Department of the City of New York, N. Y. Centers: Furnish and place all centers, templets and temporary supports required for the installation of the burnt clay tile work. Centers shall be strongly constructed and properly braced and shall not be struck until the Architect approves. At completion remove all centers and falsework from the building. Structural Steel: Carefully examine the structural steel diagrams and furnish in place without extra charge any tee irons, channels, beams or sup- ports other than those shown on structural steel diagrams, which may be necessary in the judgment of the Architect for the execution of this work. Anchors: Furnish and set any anchors in connection with this work which may be necessary in the judgment of the Architect to securely anchor the work in place or to comply with the City Ordinances. 62 Tile: All work colored or cross-hatched a neutral tint on the drawings and all that is otherwise shown to be of burnt clay material, including roofs, floors, ceilings, partitions, furrings, backing of walls and the encasing of all steel and iron work, pipes, etc., in the building, shall be of first-quality hard burned clay tile, free from cracks or defects. All surfaces that are to receive plaster or mortar shall be scored and roughly scratched before burning, to give a key for the mortar. Size of Tile: The tile for the various purposes unless otherwise specified shall be as shown or marked on drawings. Floor Arches: Floor arches shall be of the various thicknesses indicated by the drawings and unless otherwise shown shall be side or end construction flat tile arches. All floor arches shall be set so that the covering underneath the flanges of beams will in no ease be less than two (2") inches thick, and the arch skewbacks shall be so arranged as to closely fit the profile of beams, and to engage with the soffit protection of the beam flanges and securely hold it in place. The form of construction employed shall be subject to the ap- proval of the Architect, and in all cases the floors,- after they are set in place, shall be capable of sustaining an equally distributed test load of 400 pounds to the square foot without deflecting. Contractor must carefully examine the plans and various detail drawings to ascertain the arch thicknesses where special treatments are shown, necessitating varying thicknesses of arches, and shall carry out the work in accordance with details. Roof Arches: Main and pent house roofs, unless otherwise shown, shall be con- structed with flat arches, same as floors. Partitions : Lay out all lines for partitions, the bucks, studding, frames, etc., being furnished and installed as herein specified under Carpentry. 63 Soft tile blocks for the engagement of grounds shall be furnished and built in wherever required. Corridor partitions shall rest on the fireproof arches, all other tile partitions on the arches or on the concrete filling over the arches. All partitions shall extend underside of floor arches above. Where hollow tile partitions are shown to intersect or abut each other they shall be regularly bonded and all continuous perpendicular joints shall be avoided. Partitions shall be built plumb and true, to perfectly straight or curved lines, as the drawings indicate, the tile so laid as to engage and Slecurely anchor to the blocks nailed on the back of the wood bucks. Tile shall be carefully fitted around all doors, window and other open- ings. Slots and Chases: Where slots or chases are shown in partitions, they shall be formed with special tiles and the Contractor shall submit detail draw- ings to the Architect showing the forms of dies it is intended to use, and obtain his approval before beginning the work. Lintels and Lintel Arches: Furnish all tees and angle iron lintels over doors in corridor, in- termediate and division partitions, as shown on drawings, or as re- quired for proper support of the tile, or spring arches over all window and door heads, and other openings where, in the judgment of the Ar- chitect, it is necessary. Eased Corners: All corners or angles shown to be eased or rounded off on draw- ings shall have special tile made for same as shown by full size details. Furring and Tile Fillings: Where walls, spandrels, floors, gutters, pipe spaces and the like are indicated as furred or enclosed with tile, the work shall be ex- ecuted with tile of the sizes shown or noted. Furring around pipes at columns shall be bonded with the column coverings and tile partitions. 64 Cutting for Pipes: Execute all cutting, fitting, channeling and grooving that may be required in connection with the plumbing, gas fitting, electric wiring, steam fitting and ventilating work for pipes, ducts and conduits which pass through the fireproofing. Variation in location or position of pipes of any kind from that shown on general drawings should be immediately reported, before enclosing the same with fireproofing. Book Tile: The floors over pipe expansion voids and the floor over framed pipe spaces, chases, or pockets in floor construction, and such other portions as are so shown or noted on the drawings, shall be constructed of book tile, the tile being so made as to thoroughly fireproof the struc- tural members. The floors of the water closet and toilet rooms shall be furred up as shown on plans, with book tile and tee irons supported on tile parti- tions, leaving proper runways for plumbing and ventilating ducts, the Contractor furnishing and setting all tee irons where required. Furnish book tile and tee iron construction over radiator pockets in vestibules, and wherever else shown or required. Column Fire-Proofing: The fireproofing of the columns, unless otherwise specified, shall be executed with hollow tile as shown by the drawings, regularly bonded and set plumb, leaving a one-inch space between fireproofing and metal. All interior columns, fireproofed with tile, shall have the voids between the steel and the tile enclosure completely filled with concrete. This work must be executed as the laying of the tile pro- gresses, and solidly tamped; and in no case shall the tile be carried more than one (1) foot above the concrete before the voids are again filled. The tile floor arches immediately above the column enclosures shall be left out until the column enclosure is in place to facilitate the tamp- ing of concrete and permit the thorough fireproofing of the columns. The concrete for column filling shall be made of Portland cement, clean, sharp torpedo sand and broken tile or brick in the proportion of one (1) part cement, three (3) parts sand and five (5) parts crushed 65 tile or brick of a size to pass a f" mesh. These materials shall be inti- mately mixed, wet to the proper consistency, deposited between the tile and columns, and carefully and solidly tamped in place, the entire work so executed as to completely enclose and fireproof the steel to the en- tire satisfaction of the Architect. Spandrel Girder Protection: All spandrel girders throughout shall be most thoroughly en- closed and fircproofed with hollow tile materials, unless otherwise spe- cified or indicated on drawings. Especial attention is directed to the fireproofing of the girders, beams, etc., over the exterior windows on the various stories, for which special tile forms must be made fitting the flanges to which they must be securely anchored, as indicated by the sectional drawings. It is to be clearly understood that a strict compliance with these requirements will be demanded, the fireproofing in all cases to be self- supporting or securely anchored to steel, completely fireproofing the beams and girders and so set as to be entirely free from any support from the window frames below. Spandrel girders other than those indicated in exterior walls shall be fireproof ed as indicated in a careful and secure manner. Wherever girders or beams are indicated as fireproofed with con- crete or brick, the work will be executed as herein specified under Ma- sonry. Elevator Shaft: The framing around elevator shaft in all stories, also all other openings in floors, shall be fireproofed clear around, it being clearly understood that in no case shall any structural iron or steel be left ex- posed, except small steel beams crossing elevator shaft between cars, used only for attaching of elevator guides. The walls of the elevator shafts must be true and square and ab- solutely plumb from top to bottom, and should any cutting of walls be found necessary to permit the installation of elevator apparatus owing to wal's being crooked or out of plumb, the Contractor shall execute the same and put the walls in first class order. 66 Mortar : All mortar for tile setting shall be composed of first quality Port- land cement of an approved brand, and coarse, sharp, clean sand, in the proportion of one to four thoroughly mixed dry in a bos, wet to the proper consistency, tempered with lime paste to make it work smoothly and immediately used. No more mortar shall be mixed at one time than can immediately be used. The retempering and use of mortar which has commenced to set will not be permitted; all such mortar and mortar that has frozen shall be thrown out and not used in the work. Setting: All burnt clay material shall be set in place as rapidly as the progress of the job requires. All tile shall be set to bond, breaking joints in all cases, all joints shall be slushed full and no joint shall exceed one-half (£) inch in thickness. Joints in book tile shall be struck and neatly pointed, leav- ing the entire surface smooth and even. Skew backs shall be set with care, well bedded in mortar and with an even bearing on the beams; arch tile shall be shoved in place to close joints completely filled with mortar, and all keys shall fit tightly into place. The arches shall fit close against all walls and around pipes and openings. All work throughout shall finish straight and true, level or plumb, as the case may be. Patching: If, during the construction of this building, tile arches or walls become displaced, are damaged, removed or cut out the Contractor shall without extra charge execute all patching and repairing necessary, and leave the entire work ready to receive the plaster. Cleaning Ont: When the work is completed, clear away and remove from the building all rubbish and debris resulting from the work in this contract and leave the floors and premises clean as regards fire clay material. 67 Unit Prices: Name one price only for any additions to or deductions from this contract, for the respective materials and labor named below; said price to govern until the completion and acceptance of all work called for herein. All prices are to be based upon the actual measurements : 16" tile arch in place, per sq. ft $ 13" tile arch in place, per sq. ft $ 12" tile arch in place, per sq. ft $ 10" tile arch in place, per sq. ft $ 8" tile arch in place, per sq. ft $ 6" tile arch in place, per sq. ft $ 3" book tile in place, per sq. ft $ 6" tile partition in place, per sq. ft $ 5" tile partition in place, per sq. ft $ 4" tile partition in place, per sq. ft $ 3" tile partition in place, per sq. ft $ 3" furring tile in place, per sq. ft $ 2" furring tile in place, per sq. ft $ Cindeb Reinforced Concrete Fibepkoofing. The Contractor has the privilege of using a satisfactory Rein- forced Cinder Concrete arch construction instead of the hollow tile arch construction as above specified, in which case the following spec- ifiation must govern: Proportions : For this purpose the Cinder Concrete shall be made of best Port- land Cement one (1) part, clean sharp sand two and one-half (2^) parts and clean cinders free from all animal or vegetable matter, five (5) parts, mixing of these materials as herein specified under Masonry. 68 The Concrete shall be deposited in place on centers formed as shown, so that all structural steel members will be completely enclosed, the concrete extending no less than two (2) inches beyond the extreme edge s of the metal, and shall be brought to proper heights to receive the "top finish," which in all cases shall be made as herein specified under Masonry Concrete Work. Reinforcement : Into the Concrete Construction there shall be laid a steel rod or a wire mesh reinforcement, properly placed and installed, so that the strength of the reinforced concrete construction shall conform to the requirements of the New York City Building Department and shall in every respect be the equal of the tile arch construction in strength and bearing value above specified. 69 TERRA COTTA. In General: Furnish all labor and materials to execute and set complete the Terra Cotta work in accordance with the accompanying drawings and as required by this specification. Terra Cotta: All terra cotta shall be of first class manufacture, made from care- fully selected clays, compact and homogeneous in body, carefully fired, burned to a proper degree of hardness, and made first class in mate- rial, workmanship and finish. All surfaces shall be true and out of wind. No warped, over or under-burned, discolored, painted, spawled, or cracked pieces will be accepted. A sufficient number of extra pieces sball be made to guard against delay through rejection of faulty material. Color and Finish: All terra cotta except as otherwise specified, shall have a dull white enamel finish on all exposed surfaces unless otherwise shown or specified. The terra cotta from the seventh story belt cornice down to the top of the cut stone work shall have a surface finish to match that of the cut stone below, both in color and texture. The exposed surfaces of the spandrels and mullions on the 2d, 3d, 4th, 5th, 32d, 33d and 34th stories, and as shown on the drawings, shall have a dark olive green color finish. The terra cotta base and lintels in boiler, engine and pump rooms shall be made to match the brick work in finish, the base shall have a round top edge and a 1" radius cove shoe at bottom. All enameled terra cotta must be guaranteed to maintain its color and enameled surface without crazing or spawling off, and must cover all exposed surfaces perfectly so that every piece will be absolutely non-absorbent and may be readily cleaned with sponge and water. Samples : Submit to Architect for approval samples of the terra cotta of the various finishes herein specified. 70 The samples selected and approved by the Architect shall be kept on file in their office and taken as a standard of the material which is to be furnished for this work. Strength: ' Where terra cotta is used constructively, it shall be webbed and partitioned and so formed as to be capable of sustaining all loads or strains to which it may be subjected. The Contractor shall assume entire responsibility as regards the structural capacity of all terra cotta work, which shall have a bearing capacity of at least equal to that of brick masonry. Working Drawings: Working drawings shall be prepared for the terra cotta work showing in detail the jointing, bond, construction, anchorage and en- gagement with steel work. Regarding submission and approval of drawings see General Conditions. Modeling: All ornamental portions of the terra cotta work shall be modeled by experienced and skillful architectural modelers and sculptors, who may be selected by the Architect at his option. All modeled work will be inspected by the Architect before it is burned and shall be changed and altered until it is satisfactory to him. No work shall be burned until such inspection or approval has been obtained. Size and Depth: Each piece of terra cotta shall be of the full size shown by the drawings, unless otherwise detailed by the Architect, and shall extend into the wall the full depth shown. No piece of terra cotta shall be less than four inches in depth. Joints: All joints in terra cotta shall be located as shown on detail draw- ings, so far as practicable, and in case it becomes necessary to change the position of any joints the written approval of the Architect must' be obtained before the change is made. All work shall be laid out, dressed and fitted at the factory to exact sizes required, with proper allowance for joints. All joints shall bo 71 straight and true, shall finish not to exceed 3/16" in thickness and shall be as near \" as possible. Any dressing and fitting that may be neces- sary on the job shall be done by skilled workmen in the best possible manner. All window sills and large washes shall have raised or standing joints. All copings shall have roll cover joints. Drips : All projecting courses, such as sills, belts, cornices, copings, shall have drips cut underneath so that water will not run down the face of the wall. If Architect's details do not show proper drips their atten- tion shall be called to the fact before the work is gotten out. Washes: All copings, cornices, sills and projecting courses shall be formed with a wash on the upper exposed surfaces to throw water away from the wall. Haggles: Raggles shall be formed in the terra cotta wherever necessary to receive sheet metal work, flashings and counter flashings which en- gage terra cotta work. All window sills shall be raggled for hoop iron water bars. Structural Steel: The terra cotta will be used in connection with structural steel work to which it is to be hung and anchored. This Contractor shall obtain and carefully study the structural steel diagrams and shall make all necessary provision in the terra cotta for its support, en- gagement and anchorage to the steel work. Furnish and place any steed other than that shown on the steel diagrams that may be nec- essary for the proper construction, support and anchorage of the terra cotta work. Anchors : Furnish all anchors, clamps and hangers necessary for the proper installation of the terra cotta, and prepare all holes and sinkages in terra cotta to receive the same. 72 Each piece of terra cotta shall have at least two anchors. Anchors, clamps and hangers shall be wrought iron, galvanized or coated with asphaltum, applied hot, or of proper sized copper wire. It shall be the duty of the Contractor to attach all anchors to terra cotta and to structural steel and to see that they are properly built into the masonry work as it is carried up. Centers : Furnish all centers of every nature required to install his work in the building. Setting : Set the terra cotta in place in the building as fast as the progress of the work requires, working from an exterior scaffold. All terra cotta shall be carefully set to proper lines, courses kept level with a rod, joints kept close, each piece well bedded, all joints com- pletely filled with mortar, all anchors, clamps and hangers placed and securely attached to structural steel or left ready to build into masonry backing, and suspended pieces drawn tight to close joints and proper alignment. Mortar: The mortar for the setting of the terra cotta work shall be as herein specified under Masonry. Backing of Terra Cotta: All terra cotta shall be well filled with brick work or concrete, as the drawings show, as fast as it is set. The Contractor shall see that all anchors are properly and se- curely built into place by the mason. Boxing and Protection: Securely box and protect all projecting courses, jambs, angles, sills, columns, capitals, bases, ornament, etc., with proper boarding to save the same from damage during construction until the building is completed. At completion or when directed by the Architect, remove all box- ing and boarding from the premises. 73 Defacement: Each piece of terra cotta shall be sound and first class in every re- spect, and no exposed portion shall show mark of setting tool, crack craze, spawl or defacement of any sort. Any piece which becomes chipped or otherwise disfigured, whether before or after it is set in the work, will be rejected and shall be re- moved and replaced, it being clearly understood that the Contractor shall properly protect the work as necessary and leave the same in first class condition at the completion of the building. Cleaning Down: At completion or when the Architect approves, clean down all terra cotta work, repoint the joints and leave the entire work in a first-class and satisfactory condition. Guaranty : This Contractor hereby guarantees all work installed under this contract for a period of ten (10) years from and after the completion and acceptance of the same as evidenced by the final certificate, and binding himself to repair and replace, at his own expense, when or- dered so to do by either the Owners or the Architects, any and all work which may show defect of material or workmanship, deteriorate or become unsightly, through the action of the elements or otherwise, within said period. 74 ROOFING AND SHEET METAL. In General: Furnish all labor and materials to execute and install complete the Roofing and Sheet Metal Work in accordance with the accompany- ing drawings and as required by this specification. Scope of Contract: This contract includes all composition, tile and copper roofing, all copper flashings and counter flashings, decks, gutters, gutter linings, conductors and conductor heads, and connections to interior down spouts ; all copper covered frames and sash, all hollow metal doors and frames, except as otherwise specified, and all other work of a sheet metal or roofing nature shown by the drawings or hereinafter specified. Structural Steel: Furnish and set without extra charge any and all steel framing and structural work other than that shown on the steel drawings which may be necessary in the judgment of the Architect for the proper sup- port and installation of the work under Roofing and Sheet Metal Work. Tile Roofs: All roofing surfaces throughout, except as otherwise specified, shall be covered with an impervious vitrified tile, with copper flashing, all as shown by the drawings. All tile roofs shall have an underlying composition roof. Roof Surfaces: The roof surfaces on which the roofing is to be applied will be formed of flat tile arches, which will be furred up as herein specified under Masonry, with concrete to form all necessary saddles and bring the surface to proper levels, slopes and pitches to drain to gutters and downspouts, and finished with a cement top dressing giving a smooth surface on which to lay the roofing materials. The laying of the roofing shall commence as soon as the roof suf- faces are ready to receive the same, the work being carried forward to completion as rapidly as possible. If necessary, the roofing shall be laid in sections at such times as the Architect approves, the Contractor 75 making such preparation for future connections of the roof sections as will be required to make a first-class connection and a secure roof in every respect. f Materials: The materials for the composition and tile roofs shall conform to the following requirements : Roofing Cement: All roofing cement for composition shall be an asphalt roofing cement of a brand approved by the Architect. Not less than one hundred and twenty (120) pounds shall be used to the square of 100 square feet of roofing. Roofing Felt: All saturated Irish Flax Felt shall weigh not less than fifteen (15) pounds, per single thickness, per square of 100 square feet. All No. 1 Saturated Wool Felt shall weigh not less than fifteen (15) pounds, per single thickness, per square of 100 square feet and shall be of a brand approved by the Archi- tect. Composition Beneath Tile Roof: The finished cement surface of the roof shall be thoroughly and uniformly mopped with asphalt roofing cement, into which shall be laid a single thickness of saturated Irish Flax Felt, each sheet lapping three (3) inches on the preceding sheet, all laps thoroughly mopped and cemented together and the whole thoroughly cemented to the roof, the felt flashing up four (4) inches on all walls and projections above the roof. The entire surface of the felt shall then be mopped with a heavy coating of the roofing cement evenly and uniformly applied, into which shall be laid four (4) full thicknesses of No. 1 Saturated Wool Felt each 32" sheet lapping 244" on the preceding sheet, all joints well mopped the full width of the lap, thoroughly cementing the sheets to- gether and to the first layer of felt. The felt shall flash four inches on all walls and projections above the roof and shall be cut off evenly at the top. 76 The metal flashings shall then be applied and securely fastened in place as elsewhere specified, the felt being thoroughly mopped beneath the metal before it is applied ; and when flashings are in place the en- tire surface of the roof, felt and flashings, shall be mopped as before with a heavy coating of the roofing cement into which shall be laid the cap sheet consisting of two full thicknesses of No. 1 Saturated "Wool Felt each 32" sheet lapping 17" on the one preceding, laps well mopped and the whole well cemented to the underlying layer as before, the cap sheet covering the entire surface of the roof out to all edges and neatly finishing against all walls and projections. All felt shall be evenly and smoothly laid the entire work executed in a thorough and workmanlike manner to produce a waterproof and durable roof covering satisfactory to the Architect. Felting Beneath Copper: The surface of all roofs, decks and gutters, which are to be cov- ered or fined with copper, shall be covered beneath the copper with a single thickness of Saturated Irish Flax Felt and three full thicknesses of No. 1 Saturated Wool Felt, laid with 22" laps, applied in the man- ner above specified for composition roofing, thoroughly mopped throughout and flashed up four (4) inches on all walls and around all projections above roof. Laying Tile: For all tile roofs, after the underlying composition above speci- fied is in place, the surface of the felt shall be spread with Actinolite cement into which the vitrified tile shall be set and bedded. The tile shall be set with joints not over one-fourth (^) inch in width, which shall first be filled about one-third full with asphalt roofing cement poured in hot and then filled up flush with top of tiles with Marmolite cement neatly pointed, leaving a smooth even surface. The tile shall be fitted close up to all walls, curbs and projections above roof with all jointings and fittings most carefully made so as to produce a waterproof and durable roof covering with perfectly plane and smooth surfaces and even slopes. Proper preparation must be made in the laying of tile roofs for expansion joints, accomplishing the same in a manner satisfactory to the Architects. 77 Guarantee: The Contractor hereby binds himself to repair and make good at its own expense any and all portions of this work which may leak within or during a period of ten (10) years from and after the issuance of the final certificate in connection with this work. Sheet Metal: All the sheet metal work herein specified shall be executed with first-class materials in a most workmanlike manner to secure a water and weather proof and durable job. All copper shall be 16 oz. unless otherwise specified, and hard or soft rolled as specified hereinafter. All galvanized iron shall be No. 22 and No. 24 gauge, as hereinafter specified, and shall be of a brand approved by the Architect. Expansion and Contraction of Metal: In the execution of all sheet metal work due consideration shall be given to the expansion and contraction of the metal and proper pro- vision shall be made to counteract the same, so that there will be no buckling or tearing of the metal or opening of joints from this cause. After sheet metal work and flashings are in place, calk all ragglea and point them up with elastic cement in a manner to make the work absolutely water tight. Flashings : Before the cap sheet or upper layer of the composition for com- position roofs is laid, the walls and other projections above roof shall be flashed with 14 oz. soft rolled copper extending eight (8) inches up on the walls and seven (7) inches out on the felting, well cleated in place. The walls shall then be counter-flashed with twelve (12) ounce hard rolled copper, beginning twelve (12) inches above the roof ordi- narily, in the nearest brick joint, in tbe raggle provided for the pur- pose, at the under side of the roof coping or where indicated by the drawings, and extending to and lapping over the flashings not less than three (3) incbes, and well secured with copper holdfasts or clips sot at proper centers, as directed by the Architects. The smoke stack shall be flashed with 16 oz. soft rolled copper at 78 the point where it pierces the roof, the flashing being extended up on the stack not less than twelve inches and out on the roof the same dis- tance beneath the cap sheets of the composition, and then counter- flashed with 16 oz. hard rolled copper extended up beneath the flashing angles on the stack, and lapping not less than six (6) inches over the flashings. On the side of the stack next the wall the stack flashings shall be properly connected with the wall flashings. Execute the en- tire work with especial care to make a thoroughly weather proof con- nection, proper provision being made for expansion and contraction at roof line. Gutter Linings: All "built in" gutters shall be lined with 16 oz. soft rolled copper, properly graded and connected to down spouts. The copper lining shall be laid on the underlying composition hereinbefore specified and well cleated in place, flashed upon all walls, height as shown by drawings, and not less than eight (8) inches and counter-flashed as specified for flashings, and properly connected to copper work of roofs, decks and skylights. Where seams are required lengthwise of the gutter they shall be formed over polygonal wood strips as specified for expansion joints in roof copper. All other joints in gutter linings and connections of same to copper roofs and decks shall be made with flat locked seams, double locked where possible, and well soldered. The "off-set gutters" between the exterior walls at the 36th story shall be lined with copper, as above specified, properly graded to down- spouts and the work installed in best possible manner to secure a water and weather proof job. Down Spouts and Connections: Downspouts carried down inside the building will be of wrought iron pipe furnished in place as herein specified under .Plumbing, and cast iron thimbles will be provided for connections through the roof as specified under Ornamental Iron. Make all proper connections through roof thimbles to the down- spouts by means of conical water heads or throats formed of 16 oz. soft rolled copper formed as indicated by the details, properly con- nected to the downspouts and to copper gutter lining, or, where occur- 79 ring in composition or tile roofs turned out on the roof not less than 12" beneath the cap sheet of the composition, which shall lap upon and be well cemented to the copper. All throats shall be protected by two baskets of No. 10 copper wire to prevent clogging of the spouts. All exterior downspouts for main court skylights shall be of 16 oz. hard rolled copper of the square corrugated type of sizes called for 1) ythe drawings, secured in place by copper holdfasts and formed with all necessary hends, turns and elbows as the drawings indicate. Down spouts discharging on the roof surface shall be curved at bottom and provided with copper fan spreader on the roof at point of discharge, well secured in place. At all connections of waterheads to down spouts provide copper wire baskets as specified above for connections to interior down spouts. Ventilating Hoods and Louvres: Provide all ventilating hoods, louvres and other sheet metal work, in connection with the vent shafts and fan exhausts not included under ventilating. All this work shall be executed with 16-oz. hard rolled, copper braced and strengthened as necessary and with all proper flashing and counterflashing to make the work weather proof. Metal Clad Work: Furnish and install roof hatch covers made of wood, sizes and in strict accordance with the details as shown. All exposed surfaces of the covers shall be completely metal clad with 16-oz. copper in strict accordance with the rules and requirements of the National Board of Underwriters for metal clad doors. Provide the hatch covers with bronze or brass hinges and the necessary locking devices to make the work secure and acceptable. Skylights: The skylights as shewn by the drawings shall be furnished and set complete, made and constructed as the sectional details of same in- dicate. All metal work for the skylights shall be of 16-oz. copper, with glass supporting copper bars, which shall have condensation gutters connected into outlet hips and valleys in skylight. The metal support- 80 ing bars for the large court skylights shall have wrought iron core re- inforcement of proper size, all rigidly constructed and wholly framed together. All structural steel for skylights where not shown on steel dia- grams shall be furnished to make the work rigid and substantial. Ventilators in large skylights, unless otherwise specified, shall be 24" and for the small ones shall be 12" in diameter of a type approved by the Architect, made of 16-ounce copper and provided with damper and chain for closing from the floor below. The glass for the skylights shall be f" ribbed wire glass. The entire exterior curb walls of the skylights shall be covered with 16-ounce hard rolled copper, well cleated on, extending flashing to the roof below and connecting with skylight work above, the work being executed to obtain a first-class waterproof job. Make all neces- sary allowance for expansion and contraction of metal. The hanging gutters and downspouts for skylights shall be sizes as shown by the drawings. Furnish in connection with the skylights cross §" tie rods with turn-buckles of a number as shown and required, placing same above the ceiling lights below specified. Ceiling Lights, Frames, Sash, Etc.: The ceiling light frames beneath the court skylights shall be made of No. 24 galvanized iron, constructed on a system of bar iron rein- forcements in accordance with scale details. For this purpose suspend by means of suspension rods from the structural steel work above 4" steel I-beams, placing one in each mullion, connected by angles as indi- cated by drawings. The entire frame work to be rigidly connected and so adjusted as to be perfectly level as shown by drawings. Upon this skeleton steel frame work shall be built the galvanized iron frames, mullions and beams, as indicated by the scale and full size sections. The beams, bars, muntins, etc., of the ceiling fight frame work shall have moulded members as indicated by scale sectional drawings, with all mitres neatly and accurately made, and well soldered together. All necessary wrought iron forms, lookouts, etc., required to pre- 81 serve the forms and hold the same in position, shall be furnished in place complete. The sash for glass shall be made of No. 22 metal and shall be made to swing down and provided with all necessary hardware for operation as shown. All steel T's, bars, angles, etc., in connection with this work shall be painted one coat of Prince 's mineral paint before and one coat after erection. Skylight Wire Mesh Guards: All skylights shall be provided with a galvanized iron wire mesh guard, supported on a frame work, placed a distance above skylights as sectional drawings indicate. The supporting members of the guards shall consist of a light angle iron construction rigidly anchored in place, so constructed as to receive frames of iron guards which shall be securely anchored to the frame work. The mesh guard shall con- sist of an interwoven \" wire with a \" mesh set in frames, secured to the supporting frame work and the entire work neatly installed and treated to two coats of red lead and linseed oil, color as directed. The wire protecting guards shall be made and installed to con- form with the New York City building requirements. Submit shop drawings of supporting frame work to Archiect for approval. Copper Covered Window and Door Frames, Etc.: All exterior window frames and sash throughout, including tho pent house doors and frames, except where otherwise shown or speci- fied, shall be of wood, copper covered. The engaging interior finishing wood work will be as herein specified under Carpentry. Frames shall be of pine or cypress, made and constructed with the various member sizes as shown. The frames, sashes and doors, in- cluding the stops and staff beads, shall be completely encased with 16-ounce copper in a manner to conform with the requirements of the New York Building Department and the National Board of Under- writers. All frames shall be made of clear material, kiln dried, free from sap, shakes or knots. The frames shall be set perfectly plumb, and secured in place by 82 copper hold-fasts which shall be built firmly into the masonry and se- curely anchored to the frames. All frames shall be set as the masonry work progresses and shall be rigidly braced across the center so that their proper shapes will be preserved. No stops shall be set until the sash are installed. All stops shall be secured by oval-headed bronze screws, which shall be spaced 18" centers, with washers. All staff beads shall be attached to the frame in a temporary man- ner until the masonry is built up, after which they shall be removed and the joints around the jambs and heads caulked. The Contractor shall furnish and put in place all window weights of iron as required. All boxes of frames must be of adequate size to properly accommodate the proper size cast iron counter weights. The attachment of chains and weights to windows shall be such as will meet the approval of the Architect. Where weight pockets are too small for iron weights, compressed lead weights shall be used. All frames shall be substantially constructed and carefully built into the walls so as to obtain a weathertight job. The exterior doors and frames in pent house shall be copper cov- ered construction as above specified. The glass for copper covered frames and doors shall be as herein specified under Glass and Glazing. Where heads of court window frames are connected with fresh air intakes the frames shall be made as shown by drawings, the sash being reduced in size and the upper section of frames shall be fitted with louvres made of twenty ounce copper, constructed as drawings indicate. Immediately back of the louvres and where same connect with the fresh air duct furnish and install a wire screen, set in a channel frame. Screen shall be made of £" wire, one inch mesh, diagonal weave. Frames so designated by drawings shall have fresh air ventilators fitted into sills, the ventilators being made of twenty ounce copper, con- structed and operated as shown by full size details. Provide valves and operating device as shown. Metal Weather Strips: Furnish and set in place complete for all exterior copper covered window. and door frames where the application of same is practicable, 83 the Chamberlain, the Athey metal weather strip, or metal weather strips by other manufacturers equal to the above in the judgment of the Architect, set and secured in place in an accurate and satisfactory manner. Sills and 'Water Bars: All window sills shall be thoroughly protected with $" boards, left until directed to be removed by the Architect. All sills shall be rabbetted for and provided with hoop iron water bars, not less than 3/32" thick, depth as shown by drawings. Caulking of Frames: The exterior window frames throughout this work shall be caulked, for which purpose all staff beads shall be attached to the frames in a temporary manner until the masonry is built up, after which they shall be removed and the joints around the jambs and heads caulked with oakum. The caulking shall be driven at least one-half inch back from the face of the frames, and after the joints are approved by the Archi- tects they shall be pointed up with elastic cement, and the staff beads neatly and accurately set in place and secured in a permanent manner to the frames. No staff beads shall be permanently applied until both caulking and cementing have been accepted by the Architect. Sash: The sashes for exterior copper covered windows shall be of sound, kiln-dried white pine, assembled and constructed in a most rigid and substantial manner, to the satisfaction of the Architect. All check rail sash shall be double hung in place. All sash not shown check rail sash shall be fixed or arranged to hinge or pivot as the drawings indicate. All sash shall be of the various thicknesses as shown by the scale and full size detail drawings, having extended stiles or bumper moulded, as per details. All sashes shall be completely enclosed with 16 ounce copper as above specified for frames, making same to conform to the require- ments of the New York Building Department and the National Board of Underwriters. &4 GIam: All skylights shall be glazed with first quality §" ribbed wire glass. The glass for the ceiling lights beneath court skylights shall be \" maze wire glass and shall be glazed in a satisfactory manner. The glass for the copper covered windows, doors, etc., shall be as herein specified under Glass and Glazing. Steel Drawing*: Carefully examine the structural steel drawings, and any steel required to properly erect and support the sheet metal work, other than those shown, in the opinion of the Architects, shall be furnished in place without additional cost. Breakage: Exercise extraordinary precautions for the protection of the glass after same is put in place in he building, as all glass must be in a first- class condition when the building is turned over to the owner. Cleaning: At completion, or when so ordered, clean the glass of oil or other defacement, wash and leave clean and ready for occupancy, to the sat- isfaction of the Architect. Window Cleaning Equipment: Equip all copper covered window frames throughout for the H. K. Whitner window cleaners guards or guards or other manufacture equal in the judgment of the Architect. All bolts and sockets shall be of genuine bronze, made, engaged and rigidly anchored to the jamb of the frame as shown. Furnish and deliver, for use with the above, twenty (20) Whitner or equal double rope safety window cleaners' guards, complete with all attachments ready for use. Hardware : Furnish in place all rought and finish hardware required for copper covered sash. All hardware shall be first class in every respect and must be such as will meet the requirements of the Board of Fire Under- writers. 85 Sash weights shall be of lead or iron as required, of proper size aud weight to counter balance sash. Chains shall be Smith and Egge "Giant A," metal sash chains or equal in the judgment of the Architect and of approved weight. The method or device for attaching chains to weights must receive the Architect's approval. Pulleys shall be Corbin's 2605R, cast case, 3" turned wheel, steel ball bearings, amber bronzed face, or similar pulleys of Grant or Yale and Towne manufacture or equal in the judgment of the Architect. Finish hardware such as lifts, sockets, sash fasts for copper cov- ered sash shall be as herein specified under the Hardware Specifica- tions. Submit for the approval of the Architect a complete line of sam- ples of the hardware it is intended to furnish ,together with schedule of the hardware equipment of all items in this contract. The Contractor shall set all hardware in place in a very neat and workmanlike manner, employing for the setting of hardware none but the most skillful mechanics accustomed to such work, and all hard- ware shall be left at the completion of the building, absolutely free from tool marks, mars or defacements of any kind and in working order, to the entire satisfaction of the Architect. Painting: Before the work is set in place in the building the Contractor Bhall paint all galvanized iron work throughout, including wrought iron and steel in connection therewith, unless otherwise specified, one coat red lead ground in oil. The paint shall be well applied with the brush only, and shall be applied on all surfaces of the metal whether exposed or otherwise. Hollow Metal Work. Hollow Metal Doors, Frames and Trim: All doors to enclosed stair on the various stories, all Dumb "Waiter doors, the automatic fire doors, and such other doors as are so noted on the drawings, shall be hollow metal doors, with hollow 86 metal frames set in the tile openings, and with hollow metal trim on stair side of stair doors, as the drawings indicate. The passenger elevator doors, except first story elevator openings, shall also be of hollow metal set in the ornamental iron openings, as shown by drawings. Doors: Hollow metal doors shall be sash or panel doors as shown, with moulded stiles and rails and moulded stops to secure the glass and, unless special details are shown, shall conform in profile and design to the details shown for wood doors of a similar character. All panels shall be double, made of two plates separated by an asbestos filler. Stiles and. rails shall be hollow lined throughout with asbestos and provided with cork fillers to deaden sound. Outer edges of stiles and rails shall be reinforced on the inside with bar iron and similar reinforcements shall be provided at all points where hardware is to be applied. All joints in doors shall be made with lock seams, process welded throughout, so as to obtain an invisible joint and in- sure a stiff and rigid door. The fire doors being extra width shall be constructed especially for this purpose, that is, reinforced and made perfectly rigid and sub- stantial with ail necessary metal bars for the attachment of the hangers, guides and other hardware. These doors will be provided with the necessary hardware and shall be hung to fire door openings as specified under Ornamental Iron and Bronze. Sheet Steel: All hollow metal work shall be executed with cold rolled, patent leveled, open hearth sheet steel of the very best grade, known as metal- lic furniture steel, using No. 16 U. S. standard gauge metal for all work, except mouldings, moulded cornices, and the like, which may be No. 18 gauge metal. All formed and moulded work shall be cold drawn and no material shall be heated except for the welding of joints. In the construction of all work in this contract due allowance shall be made for expansion and contraction of metal and proper and effi- 87 cient means shall be employed to counteract its effects so that there may be no warping or breaking of the work or opening of joints. Moulding, Profiles: All mouldings and formed work shall be cold drawn and formed to the exact profiles detailed true to details in every respect with straight lines and sharp arrises. Finish: All hollow metal work for elevator shall have an imitation bower- barff finish. All other hollow metal work shall be treated as herein specified under Painters Finish in Carpentry and Cabinet Work. Workmanship : All hollow metal work furnished under this contract shall be of the very best type, perfect in material, workmanship and finish, and equal in appearance to cabinet woodwork of the highest grade. Building Ordinance and Underwriters Requirements: All hollow metal work furnished under this contract shall comply in all respects with the Building Ordinance of the City of New York. It shall further meet all requirements of the Board of Fire Under- writers and shall bear the inspection label of the Underwriters' Lab- oratories. Hardware : The hardware for all elevator doors shall be as herein specified undei Elevator Service, and for all other hollow metal doors as herein specified under Hardware. All automatic fire doors shall be provided with frictionless hinges, tracks, guides, cables, counter weights, electric automatic releasing de- vice, etc., to make the work complete and to meet the New York Build- ing Requirements. Unit Prices: It is understood and agreed that the following net prices for labor and materials erected complete in place shall govern any and all addi- 88 tions to and deductions from this contract, until the completion of the work called for herein and its acceptance and the issuance of the final certificate by the Architects: Price per square of 100 sq. ft., actual measurement, for tile roof . . . , .,. ... ., $. Price per lineal foot, actual measurement, of copper flash- ing. $. Price per square foot, actual measurement, of copper coun- terflasbing '...,.. $. Price per typical copper covered window frame and sash set $. place complete, with pulleys, chains and weights $. 89 ORNAMENTAL IRON AND BRONZE WORK. In General: Furnish all labor and materials to execute and install complete the Ornamental Iron and Bronze work in accordance with the accom- panying drawings and as required by this specification. Scope of Contract: This contract, except as otherwise expressly stated, includes all architectural metal work shown by the drawings or hereinafter speci- fied, the term ornamental iron being intended to include all work of bronze, brass, wrought and cast iron and steel, other than the structural steel framing of the building and work herein specifically excepted, that may be required to complete the building in accordance with the drawings and this specification. Structural Steel Drawings: Carefully examine the structural steel diagrams for the build- ing and furnish all structural steel or iron, other than shown by steel diagrams which may be necessary to properly carry out all work herein specified. Drilling, Cutting, Punching, Etc.: Execute all cutting, fitting, punching, drilling and tapping of the ornamental iron work wherever other contractors deem it necessary and require the same in order to properly secure their work, such as grounds, finished woodwork and hardware. Models : Furnish any and all models and costs thereof that may be re- quired in the judgment of the Architect for the execution of the orna- mental iron and bronze work, employing only the best and most skill- ful architectural modelers and sculptors, who may be selected by the Architect at tbeir option. Models shall be submitted in place should the Architect decide it to be necessary for their proper inspection. 90 Bronze : All bronze castings shall be made from a standard bronze metal particularly adapted for the finest quality of castings and shall be of a color selected by the Architect, who may at his option specify the mixture formula for the same. Sheet bronze shall be rolled bronze plate 3/16 inches thick unless otherwise shown or specified and with all bronze bars and other wrought work shall perfectly match the cast bronze in color. Iron and Steel: All iron castings shall be made from the best brands of soft Su- perior or Southern pig irons. Boiler plate shall be rolled steel plate of the several thicknesses shown and specified. Square, flat and round bars and tubing for wrought work and steel members for structural work shall be standard steel bars, tubes and structural shapes. Castings: All bronze castings shall be made from electro plated metal pat- terns in moulds with special facings. All fine iron castings shall be made in stove plate moulding sand, all ornamental portions cast direct from a plaster reproduction of the clay models. No ornamental portions shall be cast from wooden pat- terns. Cast metal shall be of uniform thickness throughout and free from blow holes, sand holes and other defects and from flaws, spalls and superficial imperfections that cannot be removed. All castings shall be of thickness and strength to withstand all strains, weights and pres- sures that may be brought to bear upon them, but unless otherwise shown or required for strength the thickness shall not exceed § inches for iron and £ inches for bronze. The exposed surfaces of all ornamental castings shall be per- fectly clean and sharp with the ornamental detail brought out clear and strong, well modeled, in good relief and undercut as necessary to carry out the design, and with all lines, arrises, flutings, profiles, and ornaments true, first-class and in accordance with details and ap- 91 proved models. Pierced work shall have openings and outlines free from irregularities. All castings shall be neatly filed and chased to remove all super- ficial imperfections and make the work uniform throughout; all rough and uneven edges, lines and arrises shall be carefully retouched and made first-class, and surface lines, straight line mouldings and the like shall be ground and soft wheeled. All bronze castings shall be hand filed, chased and finished through- out in a most skillful and artistic manner. Wrought Work: All wrought work shall be executed in a skillful, workmanlike and artistic manner closely adhering to the details. All welds, riveting and jointings shall be satisfactorily made with rivet heads countersunk on all exposed surfaces unless otherwise shown. No sheet metal ornament or stamped work of any kind shall be used. Assembling : All work shall be carefully and accurately assembled to carry out the design as shown; all joints made in a first-class and workmanlike manner, filed, milled, or machined so as to secure an absolutely close first-class connection that will not be readily detected by the eye; carefully membered so as to preserve the forms of all mouldings, pro- files, ornament and the continuity of lines; and well secured together with all screws and rivets concealed as much as possible. Delivery and Setting: The work shall be delivered complete ready to set up, and shall be brought to the building as required, and promptly set into place, rigidly and securely anchored, in a most workmanlike and substantial manner. Workmen shall exercise proper care in the handling and erection of all work, so as not to injure the finished surfaces, and proper pre- caution shall be taken to protect the work from damage after it is in place. All work shall be left, upon completion of the building, com- pletely finished, free from mar and defacement, and with workman- ship first-class in every detail, to the entire satisfaction of the Archi- tect. 92 Caulking and Pointing: All frames of ornamental iron or bronze in exterior openings and wherever exposed to the weather shall be canlked in the openings with oakum and then pointed with elastic cement in a manner to make them water tight and weather proof. Point all joints in exterior iron work as necessary to make the work weather proof. Finish: All bronze work, unless otherwise specified, shall have a first-class statuary bronze finish as selected by the Architect. Iron work shall have bower-barff, imitation bower-barff, or painted finish as hereinafter specified. All work specified bower-barff shall be finished by the genuine bower-barff process, with a first-class finish, unif orcn throughout ; work specified imitation bower-barff shall receive a first-class painted finish dead black in color to resemble as closely as possible genuine bower-barffing, and all iron work not specified bower- barff, or imitation bower-barff, shall receive one (1) coat of Princess Mineral paint in the shop and two (2) coats pure white lead and Unseed oil after erection in colors as selected by the Architect. The mahogany handrails and the wood work of the elevator cabs shall be finished in the same manner as specified for the interior wood work in the building in the Carpentry Specification. Samples: Submit to the Architect samples of bronze for approval as to workmanship, color and finish and of iron for approval of workman- ship, finish and bower-barffing. Refinishing: All utilities or other work in this contract which it may be neces- sary to use during the construction of the building so that the same become more or less worn and disfigured, shall be thoroughly re- painted, retouched or refinished without extra charge so as to leave the same in first-class condition at completion of the buildings. Staircases : Furnish the entire ornamental iron work for the stair wells and staircases throughout the building, made as indicated by the various plans, elevations and details. 93 Furnish all necessary strings and supports, carriages, fascias, pilasters, newels, balustrades, panel and grille work closures, risers and treads and platforms, except where composition and marble treads and platforms are shown on drawings, in which case arrange the proper ornamental iron supports for marble treads and platforms and provide metal sub-treads and sub-platforms. All sub-treads shall be secured with tap screws ; stove bolts will in no case be permitted. Treads and risers shall be made of 3/16-inch plates supported on and secured to angles anchored to carriage with countersunk tap screws, the single sizes as drawings show. Staircases which have all exposed surfaces of marble shall be provided with all structural iron or steel supports necessary, such as carriages, cast iron risers, knees and other metallic supports required to install the marble work as shown by the drawings. Where staircases have no composition or marble treads, all treads shall be of cast iron, "diamond roughed." Where stairs or platforms require suspension or strutting up, the suspension rods and struts shall be located as far as practicable in tile partitions where they will be concealed from view, or if they must be exposed, shall be of an ornamental character, of such form and so located and arranged as not to detract from the design. Stair strings and fascias shall be built up of ^-inch steel plates and cast moulded top and bottom section as the details indicate, and where shown shall member with cast iron base, which shall be installed on walls, on all landings of enclosed staircases. Newels shall be of cast iron of ornamental design as detailed. Brackets supporting the hand rails, wherever required or shown on drawings, unless otherwise shown or specified, shall be cast iron, made in accordance with the details and spaced as shown, well an- chored to walls to make a solid and firm support for rails. The balustrades and grilles shall be made with sizes of metal as shown, substantially and rigidly constructed and anchored in place. Gas pipe balustrades are specified elsewhere. Winding Staircase: As indicated by the scale details, furnish an ornamental iron con- structed winding staircase having diamond surfaced treads and a neatly 94 constructed balustrade extending from sub-sub-basement to the mezza- nine floor. Wbere staircase pierces the floors the opening shall be pro- vided with an ornamental iron fascia finished on edge with nosing, fillet and cove. Finish of Staircases: All open staircases in basement, first and second stories shall have all exposed ornamental iron work with genuine bower-barff finish. All other staircases throughout, including enclosed stairs in the stories above mentioned, shall be painted imitation bower-barff. Elevator Enclosures: Furnish and set complete all ornamental iron work in connection with the elevator enclosures throughout. The elevator enclosure on the various stories shall be in design, character, etc., as the drawings indicate. The enclosure for the first story shall be of special design, made of cast iron, backed on interior with plate wire glass. The wire glass shall be set in hinged sash, the whole so constructed and installed as to admit of easy access to glass for cleaning purposes. Provide all necessary hardware for these swinging sash, such as locks, hinges, etc. All elevator screens in the basement, on the second story, and all stories above, unless otherwise shown, shall consist of channel iron frames and hollow metal doors, the doors being made as specified under Roofing and Sheet Metal. All screens shall be carefully and accurately assembled, with the ornamental parts neatly executed, mitres and joints made in a manner to preserve the forms of the mouldings, profiles, continuity of lines, etc., and the work installed in a first class and substantial manner. Ornamental parts shall be executed in accordance with the scale and full size details, closely following and adhering to the profiles given. The enclosure for each elevator on the first floor shall be pro- vided with ornamental dials and the necessary indicators as the details show. The elevator doors throughout except on 1st floor shall be of hollow metal construction as herein specified under Hollow Metal Doors (See 95 Roofing and Sheet Metal) and shall be hung on the most approved Keli- ance Elevator frietionless door hangers, or frictionless door hang- ers by other manufacturers equal to the above in the opinion of the Architect. Each set of doors shall be equipped with latches, locks, keys and with an automatic elevator door device to make doors open simultan- eously, of a type to meet the approval of the Architect. Submit sam- ples of hardware to Architect for approval. The entire system of doors shall be made to operate freely and perfectly. Elevator Screen Structural Work: A careful study of the drawings for the elevator screens is re- quired, as all supports, such as channels, frames, tees, etc., shown in connection with the elevator enclosures on all floors, other than that shown on the Structural Steel drawings, shall be furnished and in- stalled to make the work complete. All elevator enclosures shall be extended at top so as to have main supports fastened to the structural steel of the building to make the work absolutely secure and rigid. The floor sills for all elevator enclosures shall be secured to the structural steel work, to which shall be anchored the elevator screens. Elevator Screen Indicators: The elevator enclosures on the first story shall be provided with ornamental iron indicators and the necessary numerals on the face of each for each story, indicating the stories to which the cars travel, to- gether with the hands required to make the work complete. The en- circling bands, the hands and numerals shall be of polished bronze, as drawings indicate. The mechanism for operating hands of dials, etc., together with all connections to the lifting machinery, will be furnished as herein speci- fied under Elevators. The elevator enclosures on all floors shall be provided with 1 elec- tric flash light fixture seats as shown by the drawings. Execute all drilling, cutting, etc., in these seats required to secure the electric fix- tures to the screens. The light fixtures, globes, all electric operating devices, etc., shall be furnished as herein specified under Elevators. 96 Finish of Elevator Screens, Doors, Etc.: All exposed surfaces of the elevator screens, on first and second story shall have a genuine bower-barff finish, of the very best quality, uniform in finish throughout. The screens in all other stories shall be painted imitation bower- barff. Facias: The facias for stairs and well holes are specified under "Stairs." The fascias for all elevator shafts throughout shall be made of 3/16-inch sheet steel secured to cast iron sills above and the elevator screen work below, made as indicated by sectional drawings. Fascias shall be rigidly and securely assembled and anchored in place, neatly fitted around the structural beams in elevator shafts. Where facias fit between beams they shall be neatly and accurately coped and the joint between beams and facias covered with a neat thimble. All iron facias shall have an imitation bower-barff finish. Safety Treads: Each elevator opening throughout shall be provided and fitted with a bronze safety tread having a rounded nosing on shaft side, the tread threshold width as shown, and shall be of the Mason's Safety Tread Type or others approved by the Architect. Numbers : Furnish in place white enameled cast iron story numbers on facias in front of each elevator car from first to top story. Numbers shall be at least six (6") inches high, and well secured to the fascias with in- visible anchors. Passenger Elevator Cars: Furnish all labor and materials and finish all elevator cars com- plete in accordance with the drawings as shown. The platforms for the passenger elevator cars will be furnished as herein specified under Elevators, to which rigidly anchor in place complete the cabs or inclosures. The cabs shall be made of mahogany (fireproofed if required) and ornamental iron in a rigid and secure manner. The top and sides of 97 cars above the wainscot cap mouldings shall consist of a system of grilles, made as indicated, which together with all exposed ornamental iron work of the cars shall be finished in bower-barff. The top of each car shall be provided with a copper drip pan, made as shown and as directed by the Architect. The top of the com- bination car shall be so made as to be removable. Light fixtures made of cast iron, all complete with glass globes, socket, etc., for cars shall be furnished all complete and ready for lamp attachment. The wood work in connection with the cars shall be best grade selected mahogany, highly figured stock, the work, quality of material and execution of same shall be first class in every respect and in finish shall correspond with the wood work and finish of same for the build- ing, for which see Carpentry and Carpenters' Finish specifications. Each car shall be fitted at sides with an exit door as a means of egress from one car to another. The doors shall be so constructed as to be practically invisible and shall be provided, for proper operation of same, with all necessary locks, butts and other hardware, first class in make, quality and finish, of a type acceptable to the Architect. The cars shall be braced and strengthened by a frame work of 3x3xf-inch angles on all exterior corners set flush into the woodwork, well framed together and rigidly sectioned at the bottom to the car platform. Elevator Car Collapsible Gates: Each passenger elevator car throughout shall be fitted with an ornamental iron collapsible gate of an approved type, installed in complete working order with the necessary guides, tracks and other operating mechanism to make same complete and comply with the New York Building Ordinance. Cork Floors: All passenger and combination elevator cars shall have cork tile floors \ inch thick. The tile shall be made of the finest quality clear granulated cork compressed solid in closed moulds and thoroughly baked. The cork shall be free from all foreign substances and cement of any kind other than the natural gum of the cork. 98 The cork tile shall be laid with a special elastic waterproof cement, so applied as to hermetically bind all joints. The tile shall be color and size as selected by the Architect, shall be laid perfectly smooth and level with the top surfaces in the same plane. The entire work shall be installed to the entire satisfaction of the Architect. Submit samples to the Architect for approval. Entrance Doorways and Vestibules. The entrance doorways to the building on Broadway, Cedar, Nas- sau and Pine streets shall be made of cast or wrought bronze, orna- mental in design, prepared for Revolving Bronze Doors and Enclos- ures. The work shall be carefully and accurately executed and worked out in strict accordance with floor plans, elevations and scale details of same. The grille work above the revolving door enclosures and the deco- rative parts shall be artistically executed, with all lines clean and sharp throughout, the ornamental portions carried out in strict accordance with the models approved by the Architect. All joints, mitres, etc., shall be made in first-class manner with the workmanship perfect in every respect. All mitreing of mouldings, jointings, etc., shall be most carefully made and membered to carry out the designs as shown, with the lines and ornamental parts unbroken. The work for these entrance doorways and vestibule shall be sol- idly and substantially erected and well secured in position to make a rigid job, acceptable to the Architect. Radiator grilles and frames adjacent to the entrance door enclos- ures shall be of cast iron with a genuine bower barff finish, and in de- sign as shown. The grilles shall be made in sections set in frames and hinged so as to give access to radiator space, and shall be provided with all necessary hardware, such as locks, hinges, etc., which shall be made as inconspicuous as possible. The backs, ends and floors of ra- diator pockets shall be made of £-inch sheet iron, all properly con- nected with grille frames. The structural beams, channels, angles, tees, etc., shown in connec- tion with the main entrance doorways and vestibules, radiator grilles, store fronts, transom grilles, etc., other than that shown by the Struc- 99 tural Steel drawings, shall be furnished in place complete, sizes as shown, the work securely anchored to the structural steel of the build- ing, forming solid and substantial frame work to receive the orna- mental metal work. Revolving Doors: Furnish in place, complete in all respects, including glass, the revolving doors and enclosures for the Broadway, Pine, Nassau and Cedar street entrances to the building, as the drawings indicate. The enclosures shall be made of cast bronze of ornamental design, carried out in strict accordance with the details. The sides of the enclosures shall be arranged to receive curved glass panels and pro- vided with stops to secure the same, so arranged that the face of the glass on the inside will be flush with the inside face of enclosure frame. The complete cylindrical enclosures, both on inner and exterior sides, shall be of bronze. The doors shall be made of wrought bronze and shall be of the latest and most approved type of revolving doors, equipped with all necessary hardware, tracks, hangers, pivots, operating mechanism, etc., complete, and made to operate to the entire satisfaction of the Architect and to comply with all requirements of the city ordinances and the regulations of the Building Department. Circular bronze corrugated thresholds shall be installed for all openings as shown, securely anchored in position in the floor. All hardware and exposed parts of mechanism, also stops securing the glass in the enclosures, shall be of bronze of same finish as the doors and enclosures. The revolving wings shall be hung independently of each other on a central shaft, held in a radial position by flexible bronze cables and so arranged that by the application of unusual pressure on any part or parts of any two of the revolving wings the wings will automatically collapse and fold flat on each other in an outward position. The revolving wings shall be hung from a self-oiling ball bearing located above the ceiling and so arranged that they may be released from the central position by one operation and moved to one side of the opening. The revolving doors and enclosures for the basement story, next to 100 Broadway, leading to the sub-way, shall be made of mahogany and plate glass, made and installed in a similar manner as above specified for bronze revolving doors and enclosures and as shown by detail draw- ings for the same. Fit the openings with bronze circular thresholds and the doors with bronze kick plates. Provide all hardware, such as locks, bolts, etc., necessary to make the work complete. Bulletin Boards: Furnish and locate on the wall of the first floor elevator hall, as shown by the drawings, two (2) ornamental iron bulletin board directo- ries, and frames as shown on drawings, made and arranged to accom- modate the names of the tenants of the building, equal to the arrange- ment manufactured by the Tablet & Ticket Company or the United States Tablet & Sign Company of New York. The Contractor shall pay the rental for the first year's use of this system, the same reverting to the Owner of the building thereafter. The frames shall be made for sectional iron minor frames to accommodate the names of the tenants. Each minor frame shall be rabbetted to receive a bevel edged plate glass which shall be in one single piece for each frame. Each minor frame shall be provided with black strips containing the names of the tenants and an adjustable wood backing with catches, clasps, etc., complete, all as the drawings indicate. The frame and the minor sectional frames shall be finished a genuine bower-barff. The inscription "Directory" at the head of the board shall be of polished bronze, raised not less than 3/16", secured to the frame with invisible anchors. Provide all glass facing sections, which shall be best grade of pol- ished plate, beveled as shown. Bronze Thresholds: The main entrance revolving doors to the building, the revolving doors in basement, all doors on first floor facing elevator halls and cor- ridors, the doors on the 37th story leading to roof, and such other doors as the plans and detail drawings so indicate, shall have cast bronze corrugated thresholds, carefully fitted and well secured and anchored in place, made in accordance with full size detail drawings for same. /, ■i 101 Kick Plates: The kick plates for the exterior side of all entrance store doors, first floor, shall be of bronze, dull statuary finish. The kick plates on all other doors where shown or required shall be cast iron, and shall have a bower-barff finish. Kick plates shall be provided for all first floor corridor and store exterior and interior en- trance doors, and wherever indicated on drawings. Wherever kick plates are shown or required, they shall be placed on both sides of the doors. Pipe Shaft Iron Doors and Frames: The openings leading to the pipe shaft on floors where required by the drawings shall have 3"x3"xf" angle frames made as shown by detail drawings, the frame continuing around entire opening forming frame and sill. The frames shall be fitted with 3/16" boiler plate steel doors, stiff- ened on inner side by having l"xl"x3/16" angles riveted around en- tire outer edges, with two (2) intermediate horizontal angles of same size, spaced at equal intervals vertically. The doors shall be provided with good and serviceable locks, butts and other hardware acceptable to the Architects. Cast Bronze Door Sills and Fascias: The door opening for pent house on exterior shall be provided with cast corrugated bronze sills. Automatic Fire Doors and Frames: Fire doors and frames shall be furnished and installed complete throughout the building where shown and required by the drawings. The openings shall be fitted with channel and angle iron frames, made and installed as indicated, the frames being secured at top and bot- tom to the floor structural steel work, the entire work made rigid and solid, preparatory for the installation of the doors. The doors shall be hollow metal as herein specified under Roofing and Sheet Metal Work, and shall be hung on iron tracks secured rig- idly to frames and equipped with tracks, hangers, cables, counter- weights, electric automatic devices for closing same in case of fire, etc. Especial attention shall be given to installing thermostatic closing 102 device, which shall he perfect in operation and acceptable to the Archi- tect, the New York Fire Department and made to comply with the re- quirements of the New York building code. Iron access doors for each fire door opening shall be provided for access to the weight boxes and overhead tracks, guides and sheaves as shown and required, for which furnish all hinges, catches, locks, etc. Equip all doors with grooved iron sill, thresholds and furnish in place, track and counter-weight boxes and frames for access to the mechanism of doors, together with hardware for same. Equip each track access door with an illuminated opaque glass sign with numbers of offices beyond doors and all necessary lamps and electrical connections, making the work complete. Second Story Grilles: At each end of coffered ceiling, second floor, furnish and install an ornamental iron frame and open grille as indicated by the draw- ings. The frame shall consist of a system of vertical mullions secured to sill and head of frames at top and bottom respectively. Between mullions install ornamental irou grilles consisting of a system of hori- zontal, vertical and diagonal moulded bars, fabricated in a neat and accurate manner so as to make all joints first-class in every respect. Grilles and frames shall be finished alike on both sides, accurately fitted and securely anchored in place. All exposed work of grille and frame shall be finished imitation bower-barff. Flag Pole: As the scale plans, elevations and sectional details indicate, fur- nish and locate flag poles in court pediment walls at seventh floor level, over the main entrances on the Broadway and Nassau fronts, the poles being made of 7", 6", 5", 4" and 3" wrought iron pipes. These pipes shall be connected by extending one pipe into the next larger size a dis- tance of not less than two feet, the joints being "shrunk" or welded joints, no screwing, riveting or clamping of joints will be permitted. The poles shall rest on cast iron shoes setting on and secured to the roof beams, anchored to the steel construction. Where the pole and braces are secured to the roof construction, they shall be provided with a storm collar, to which shall be secured 103 copper flashing, extending same on to roof, executing a water tight job in every respect. Poles shall be provided at top with a cast bronze truck with two bronze sheaves, and each pole surmounted with a 12-inch No. 16 sheet bronze ball, gilded with gold leaf, all as shown and required by the drawings. Cast iron base, where poles engage with the terra cotta, shall be made as shown, the engagement between the various materials being made in a first class and satisfactory manner. Provide two \ inch copper wire cable halyards for each pole, and at the base of the staff grips or clamps well secured for fastening hal- yards, same to be of a design satisfactory to Architect. Wrought Iron Pipe Balustrades: Wrought iron pipe (also marked "Gas Pipe" on drawings) balus- trades and railing for staircases, so noted on drawings, elevator shaft in pent house and wherever so noted on the drawings, shall be provided and installed as shown. The railings shall be made of two parallel rows of pipe, joined with the proper unions and connections to vertical flanged pipe uprights, spaced approximately four feet centers, which shall be securely and firmly anchored in place to make a substantial job in every respect. The size of pipe for balustrades shall be as marked on drawings, and where not designated shall be made of \\" pipe. Where staircases have wrought iron pipe balustrades they shall be made in a similar manner with same size materials as above specified, the balustrades being securely and rigidly anchored to the carriages. Pipe Shaft Balconies: As indicated by the various floor plans, furnish in place on each floor iron balconies constructed of a system of angles, bars, etc., as shown by the details, which shall be securely and firmly anchored to the structural steel work to make same secure in all respects. The balcony construction shall at each floor consist of parallel 3"x5"x^" angles arranged as shown and extending across pipe shaft, framed together and to the structural steel work, forming a support for the floor construction which shall consist of two parallel 2£"x2-|" bars, into which shall be set a series of £"xf" cross cars well riveted 104 and made perfectly rigid. This floor construction shall be so made as to be easily lifted out of the angle iron frame work. As the scale details of same indicate a portion of the balcony floors shall be hinged. Balconies shall be supported on channels and I beams, as drawings indicate, to which they shall be securely anchored. Iron Ladders: Furnish in place in pipe shaft, and wherever else noted, iron lad- ders the entire height of the shaft, or lengths and runs as shown, made of two 2\"s2\" bars, placed vertically two feet apart with £"x§" square iron rungs spaced 14" centers and set diagonally. Ladders shall be securely riveted and anchored to structural "I" beams, with iron brackets, or anchored to brick work with expansion bolts as the case may be. The ladder from the main to the pent house roof, also the ladder escape from boiler room to sidewalk on Cedar street, shall be securely constructed and anchored in place. Vent and Exhaust Grilles: Furnish vent and exhaust grilles and thimbles for same, wherever shown or required by the drawings. All grilles shall be made of cast iron, ornamental in design as the drawings indicate, and where necessary shall be provided with a cast or sheet steel thimble for setting in and securing in position in the walls. All grilles, unless otherwise specified, shall have imitation bower- barff finish. Vent and exhaust grilles are required for all corridor doors in the toilet rooms and janitors' closets throughout the various stories, and wherever noted on the drawings. A careful study of the plans, scale and sectional drawings is re- quired for the location of these grilles, as it is to be understood that all grilles as shown and required shall be furnished in place complete. The ceiling registers for toilets and janitors' closets, except where sizes of same are marked on the drawings, shall be 8"x8". The vent grilles for entrance doors to janitors' closets and toilet rooms shell be made in ornamental pattern set in a frame and secured to the panels provided for same in the doors. 105 Store Fronts, First Story: The exterior store fronts, first story, shall be of wood and orna- mental cast iron, constructed and securely anchored to jambs, sills and heads by means of angles and expansion bolts, as indicated by scale and full size detail drawings of same. The wood work will be mahog- any furnished as herein specified under Carpentry. Frames shall be carefully fitted to openings, securely fastened and tightly caulked to make an absolutely tight job. Extraordinary care must be exercised in anchoring the frames to the cut stone, terra cotta work and structural columns so as to avoid spawling the surfaces of same. It is to be understood that in case any cut stone or terra cotta sur- faces are marred or damaged in executing the work, the same must be made good and replaced to the satisfaction of the Architect. Where members of store fronts are to be drilled for condensation gutters, the same shall be executed as shown. All store fronts shall be constructed with removable stops, so that the glass can be inserted from the outside. Frames shall be so made that transoms, doors, etc., will swing as indicated by the detail drawings. All store fronts shall be carefully constructed with the mouldings accurately made, in accordance with full size section, carefully mitred so that all members are made, assembled and worked out in strict ac- cordance with the drawings. Provide all structural angles, tees and other steel members for proper anchorage and support of the store fronts as shown. The interior store fronts shall be made of wood and will be fur- nished as specified under Carpentry. Window Grilles: For windows located in the frieze of the Intermediate Story (im- mediately above the third story), furnish and install ornamental iron grilles and frames as indicated by the drawings. The guides shall be made of a system of horizontal, vertical and diagonal cast bars, neatly fabricated, assembled and fitted into a cast frame, which shall be well secured to the openings in the terra cotta work. Grilles shall be fin- ished alike on both sides. 106 Window Guards: Window guards for the exposed window in the toilet rooms shall be made as indicated by toilet room detail drawings. The guards are to consist of a system of 1£ horizontal round bars, two to each window, and to be securely anchored to the window jambs. Guards shall have a bower-barff finish. Ejector Pit: Provide and set iron stair to bottom of ejector pits, and a two inch double gas pipe hand rail around pits, the rails continuing down sides of stair. The stair shall have wrought iron strings, cast threads (no risers) and all work shall be securely fastened in place and shall re- ceive three (3) coats of paint. Coal Bunker Doors and Frames: The coal bunker door frames in boiler room shall be made of \" sheet steel, reinforced on corners with 3x3x5/16 inch angle, and fitted on jambs with anchors which shall be laid into the concrete work, securely anchoring the jambs to the masonry. Provide heavy corrugated cast iron thresholds for each frame, as shown. The outer doors shall be made of 3/16 inch sheet steel stiffened around outer edges with 1£xHx3/16 inch angles, and hung to the metal jambs with heavy hinges. Provide each door with all necessary hard- ware, such as hasps, catches, etc., all complete in every respect. Inner sides of frames shall be provided with angle guides and 2"x8" planks for coal guards. Planks shall be bound on ends with channel iron. Elevator Controller Floors: The controller floors shall be provided with bar iron grating floors, supported on an angle iron frame work, made of 2xJ inch bars, set into an angle iron frame work, all as shown by drawings. Openings for cables, sheaves, etc., shall be framed into these gratings as shown. Sub- mit shop drawings for this work, showing sizes, etc., to the Architect for approval. 107 Coal Hole Covers and Sidewalk Escape: Coal hole covers and frames of a size as shown on plans shall be provided in the Nassau and Pine street sidewalks over the coal bunkers. The covers shall be a bar grating construction fitted into rabbeted cast steel frame made in accordance with details. The frames shall be cast steel thimbles securely anchored to the concrete work and set flush with surface of the pavement; the lower edge of the thimbles discharging into and being connected with f-inch boiler plate chutes, which shall be rigidly and solidly constructed and anchored into place. Chutes shall be square in section, riveted together at angles by means of continuous angles on exterior side entire length. Frames shall be rabbeted to receive covers, which shall be hinged to same with heavy brass hinges. The covers must be delivered and set up so that they can be built into the concrete work as the same is installed. The sidewalk escape door at the head of ladder leading from boiler room shall be made of cast iron with "diamond surface" top, providing same with a catch beneath for ready opening in case of neces- sity. Main Arcade Booths: The booths in main arcade shall be of ornamental cast iron and marble construction as the drawings indicate. The ornamental iron work in connection with the booths shall be of the same character and design as the elevator enclosures, of which they are practically a continuation, neatly and solidly constructed, all executed in a first class manner. Entrance gates to booths shall be made as details show, fitted with Rixon floor checking, hinges and secret locks and catches. For the openings in the booths there shall be provided a system of removable collapsible iron grilles for night installation, made for ready removal and installation, and as shown by the detail draw- ings. Provide all necessary hardware such as locks, butts, etc., of ihe most approved type. Radiator Register Faces and Enclosures: Into the vertical walls just above the floors and beneath all exterior windows in the fourth, fifth and the west half of the sixth, seventh and 108 eighth stories, furnish and install ornamental iron register frames and grilles, placing same immediately back of radiators, all made as details indicate. All radiators in executive office of the Equitable Company shall be completely enclosed, top, sides and front with ornamental iron radiator enclosures indicated by the drawings. Trench Cover and Frame: Provide frame and cover for the pipe trench in boiler room in sub- sub-basement floor. Frame shall be continuous of cast steel corrugated on the face, rabbeted to receive the covers and well anchored in the concrete. Cover shall be of cast iron, made as sectional details indicate to receive a vitrified tile floor as herein specified under Masonry, in lengths of about five feet, stiffened on the back with ribs, set loose into frame and provided with flush rings for lifting. Access Iron Doors and Frames: Furnish and install in basement and sub-basement iron doors and frames to the various voids, which give access to valves and such other utilities as the drawings indicate. The frames shall be made of angle irons, which shall be firmly an- chored to furred ceilings or tile walls, as the case may be. Frames shall be set flush with the plaster and shall be rabbeted to receive the doors. The doors shall be made of 3/16" sheet steel, stiffened on back by having l"xl"x3/16" angles riveted to outer edge of the steel sheets. The doors are to be provided with flush hinges and all necessary hardware, such as locks, catches, etc., for their proper operation. Cast Iron Bumpers: Furnish and install cast iron bumpers for freight entrances, as shown by the drawings. The bumpers shall be made form and size as shown, extended beneath the sidewalk surface and securely anchored to structural steel work. The castings shall be one-piece castings, not less than one (1) inch in thickness and uniform in finish throughout and so made as to neatly engage with the granite and adjacent masonry work. 109 Dumb Waiter Door Frames: The dumb waiter door frames on the 35th and 36th stories shall be made of channel iron, framed between and connected to the floor beams, all made as shown by drawings for same. The doors will be hollow metal, as herein specified under Roofing and Sheet Metal, for which shall be provided all necessary cables, pulleys, counter weights, guides, fusible links, catches, etc., to make the work complete. The casings for the openings shall be made of wood, as specified under Carpentry. Coal Banker Balconies: Furnish and install a balcony floor and wrought iron balustrade in coal bunker, as shown by the drawings. The balcony floor construction shall be of the fire escape type with f" square bars spaced 2-J" centers and riveted into §"x3" horizontal bars, the grating being anchored to cantilevered beams, which are fur- nished, as shown by the Structural Steel drawings. The balustrade shall be a two (2) inch gas pipe railing with vertical uprights secured to each cantilevel beam. The whole work shall be securely and solidly anchored in place and connected with the exit doors at ends, as shown on drawings. Access to the balcony shall be had by means of a ladder terminat- ing above on an exterior grating platform, as indicated. Machine Room Trap Doors: For the removal of elevator engines, armatures, sheaves, etc., pro- vide in the floor of elevator machine rooms where so shown and re- quired angle iron frames and Linden steel doors of a size as indicated. Frames shall be made in depth equal to the thickness of the floor con- struction, properly constructed to receive the doors. The doors shall be made of \" Linden steel, in two leaves each, stif- fened by having 2"x2"x3/16" angles riveted around the entire outer edge of doors with two intermediate angles placed at equal intervals. Provide doors with all necessary hardware, such as locks, hinges, lifts, etc. "j ' *'T5] 110 Boiler Plate Wainscoting: The walls of the freight vestibules, first story, shall be wains- coted to a height of five feet above the floor with \" sheet steel, extend- ing all around the room. The work shall be executed with plates of a width equal to the full height of the wainscot and of as great length as possible, so that there will be no horizontal and but few vertical joints. Vertical joints where occurring shall be butt joints secured by plates riveted on the back. All joints at corners shall be made with 3x3x£ inch angles placed on the back at re-entrant angles and on the front at salient angles, and the upper edge shall be stiffened with a 2ix3x^ inch angle placed on the front, set with the 3 inch leg horizontal in position to be built into the tile walls as they are laid up. The plates shall be carefully fitted at all openings and properly connected with the frames. The exposed walls of the freight lift shaft shall be lined its entire height with boiler plate 3/16" in thickness and installed as above speci- fied for the boiler plate wainscoting. The wainscoting shall be provided on the back with proper an- chors to be built into the walls and shall be set with great care so that the finished surfaces will be perfectly plane and free from warps, twists or buckles. Conductor Head Thimbles: Each down-spout head where same pierce the roofs there shall be provided cast iron thimbles not less than 1 foot 1 inch in diameter, flanged at top and bottom to support the tile arch of the roof con- struction. These thimbles in depth shall equal the depth of the fireproof arches supporting the roof at the place where the down-spout heads are located. Meeker Sliding Doors: Openings where so indicated by the drawings shall be fitted with channel iron frames (depth of jamb) and Meeker or the Vermaneo counterbalanced iron doors, of a size as indicated by the drawings. The door frames in the brick wall shall consist of a 3/16 inch Ill boiler plate jamb and head stiffened on both sides with 2£x2£x^ inch angles riveted to both iambs. The opening shall be provided and fitted with a heavy cast cor- rugated angle threshold depth of wall, extending down the face of the elevator shaft at least six inches to form a fascia. Threshold shall be securely and solidly anchored to the floor construction. The counter-balanced doors shall be made of No. 18 galvanized corrugated iron, secured to a well constructed angle iron frame of a size as shown by the full size sectional details. Doors shall be made to slide in grooves, properly counter-balanced, and shall be provided with heavy rubber cushions at abutting joints of doors. Provide all necessary and suitable hardware, such as cables, sheaves, locks, catches, etc., for the proper operation of the door. Contractor is to under- stand that only doors which operate satisfactorily will be acceptable to the Architect. Where the counterbalanced doors are over six feet in width, they shall have extra horizontal reinforcement across the middle, so as to prevent doors being forced in and interfere with the passage of the cars. Rolling Steel Shutter and Frame: Furnish in place rolling steel shutter and frame for the freight elevator entrance, first story. The opening shall be fitted with a boiler plate frame, made of \ inch metal stiffened on edges with 2ix2ix| inch angles, so arranged as to form inner and outer casings. The frame shall be set in place before masonry work is executed, so same will be solidly bricked in. The shutter shall be constructed of No. 18 galvanized steel with reinforced edges, counterbalanced by Helix wire springs, and shall have an endless chain operating device, the whole neatly and securely anchored in position, as indicated by sectional drawings. The shutter, owing to its width, shall be heavily reinforced and solidly constructed. Provide shutter with necessary guides, hood, hardware, lock, key, etc., to make same complete in every respect, and shall be installed and made to operate to the entire satisfaction of the Architect. The rolling steel shutter and frame shall be painted as herein- after specified. 112 Iron Doors and Frames: Openings in the brick and tile walls where so shown or noted shall be provided with iron doors and frames. The frames shall be made of steel channels or of 3/16 inch boiler plate stiffened on the edges with 3x3xf inch angles. The frames shall be secured to the steel work both below and above. The doors shall be made of 3/16 inch sheet steel, stiffened by hav- ing l|xlfx3/16 inch angles riveted around entire outer edges, with two horizontal angles spaced equally vertically. The doors shall be hung with heavy hinges and provided with all necessary hardware, locks, etc. All doors shall be painted as herein specified. Booth Mezzanine Balconies: The first floor booth mezzanine balconies shall be provided with an ornamental cast and wrought iron balustrade with wood hand rail constructed and rigidly anchored to the structural steel work, all as indicated by the scale and detail drawings. From the first to the mezzanine balconies install iron step ladders with cast iron carriages and diamond surfaced treads finished on edge with a neat rounded nosing. Step ladders to be provided with a 2 inch polished bronze rail securely anchored to the carriages and newel posts above. Painted Work: This Contractor shall paint all of the ornamental iron work not bronze, brass or bower-barff, unless otherwise specified, one (1) coat of Prince's Mineral Paint before delivery and two (2) coats of pure white lead and linseed oil after delivery. The color shall be selected by the Architect. The elevator cars and the wood handrails throughout shall be finished in same manner as all interior woodwork, for which see Car- pentry Specification. Mail Box: The mail box will be furnished as specified under Mail Chute and Box. 113 Hardware: Furnish and set in place in a very neat manner all finished hard- ware required to complete ornamental iron and bronze work in the building. All hardware shall be left at the completion of the work absolutely free from tool marks, mars of any kind, and all shall be made to work to the entire satisfaction of the Architect. All hardware for this purpose, except as above specified, shall be first class in every respect, of the most modern and approved type, acceptable to the Architect. 114 PLASTERING. In General: Furnish all labor and materials to execute and install complete the Plastering work in accordance with the accompanying drawings and as required by this specification. Plaster Surfaces: The following surfaces shall be plastered: Sub-Sub and Sub-Basement: All exposed wall and ceiling surfaces, including columns, shall be plastered, except the interior walls of the coal bunk- ers, which will be left in the rough. Basement: All exposed wall and ceiling surfaces, including columns, except otherwise noted, shall be plastered. First Floor to and Including Thirty-sixth Story: All wall and ceiling surfaces, including columns, except oth- erwise noted, shall be plastered. Pent Houses: All exposed walls and ceiling surfaces shall be plastered. Shafts: The elevator shafts and stair case enclosures shall be plas- tered top to bottom; the pipe and vent shafts shall not be plastered. Burnt Clay Tile Material: All partitions, ceilings and furring will be of hollow tile construc- tion, unless otherwise shown or specified. Where walls are not furred they shall be plastered directly on the brick or concrete and as the case may be. Wetting Tile: All tile partitions and furring shall be wet before plastering is applied to prevent too rapid absorption of water from the mortar. 115 Expanded Metal Ceilings, Partitions and Enclosures: All partitions and furring shown on drawings as "metal lath and plaster" shall be constructed of expanded metal or wire lath and steel channels. The enclosures for pipes on the interior columns, unless otherwise shown, will be of tile, furnished in place as herein specified under Hol- low Tile Fireproofing. Where same are shown to be of metal lath and plaster they shall be as specified for expanded metal partitions. All ventilating ducts exposed in portions of the building which are plastered shall be enclosed with expanded metal lath and plaster work ; contractor must refer to diagrams to ascertain the extent of this work. The ceilings of certain portions throughout the building shall be "suspended ceilings" furred down with expanded metal lath or wire cloth upon framing of steel channels and angles, which shall be hung with suspension bars and rods from clips attached to structural steel beams before the tile fire-proofing is applied. Other Furring: All plaster beams, cornices, soffits and other portions so indicated shall be similarly furred with expanded metal lath or wire cloth with all necessary steel framing for its support properly disposed and rig- idly secured in place. All suspended portions shall be supported from clips attached to steel beams as specified for suspended ceilings. Slots and Chases: All recesses, slots and chases cut or built into the walls for steam or plumbing pipes, electric wiring, etc., shall be covered over with strips of expanded metal rigidly secured to the adjacent walls to admit of making the plaster surfaces continuous. Other Plans: Carefully examine the heating and ventilating diagrams and struc- tural steel drawings and enclose with expanded metal lath and plaster any work such as raggles, expansion joints or plumbing pipes which require such enclosures. Door and Window Openings: Around all window or door openings throughout where walls are to be plastered install a strip of expanded metal or wire lath ten (10) 116 inches wide, properly and securely anchored to the grounds and tile or hrick work, to prevent the possibility of cracks in the plaster work around openings; execute this work very carefully to insure a 1st class job in all respects. Studding and Framing: The studding for expanded metal partitions shall be £" steel chan- nels, 7/10 pound per lineal foot, spaced twelve (12) inches on centers; spiked at bottom to wood strips on a line with the top of floor strips and wired at top to channel irons. All openings shall be framed with l"xl"x3/16" angles. All angle studs used in framing shall be full length, extending from floor to ceiling. All framing for suspended ceilings, furring and similar work shall be of steel channels, angles or tees as above, of proper size for the pur- pose for which employed, suspended, anchored and secured rigidly in place. Structural Work: Provide any and all supports, lookout, furrings, tee irons, etc., that may be necessary for the proper construction of all plain and orna- mental plaster work, dropped ceilings, furred walls, etc. All such supports, furring, and grounds shall be of metal and of the size, shape, etc., approved by the Architect, same being securely fastened into place. Carefully examine the structural steel diagrams and furnish all additional work necessary to properly and safely sup- port the plaster work, other than shown on same. Lath: All lath shall be expanded metal lath of not less than No. 24 gauge, with ribs at least %" wide, or if not less than No. 22 gauge with ribs at least 3/32" wide; or No. 18 U. S. Standard gauge wire cloth f" mesh, stiffened every 7" with 3/16" diameter rods, all of which shall be given one (1) heavy coat of paint or linseed oil. The lath shall be firmly wired to the furring with No. 18 annealed galvanized lac- ing wire; each sheet of metal lath being wired at least four (4) times to each stud, with ends and sides of sheets properly lapped not less than one (1) inch and laced together. One (1) side only of stud- ding shall be lathed. See drawings and full size details. 117 Sample of expanded metal lath or wire cloth shall be submitted to the Architect for his written approval. Grounds : All necessary wood grounds will be furnished and set in place as herein specified under Carpentry. Where grounds come in expanded metal furrings, the metal chan- nels shall be suitably punched to admit of readily nailed wood blocks to which wood grounds are secured, all as shown on drawings. Verify all grounds before the plastering is begun to see that they are built perfectly true and straight, plumb and level as required, and see to it that the same are remedied before commencing the plastering. All grounds and furring for ornamental plaster wall shall be of metal in all cases furnished in place complete, no wood grounds or furring shall be used for this purpose. Mortar: All mortar for the plastering, unless otherwise specified, shall be composed of a patent mortar, either Diamond, Flint, Granite, Imperial, Rock, Kallolite, Mineral City, or equal in the judgment of the Archi- tect, mixed with sand in the proportion specified by the manufacturers. All sand shall be clean, sharp and free from loam, bark, coal dust, cinders, charcoal or any vegetable matter. Coats : Except as otherwise specified, all plastering on concrete, brick and tile walls shall be what is known as two-coat work, where on metal lath surfaces it shall be three-coat work. The last coat in all cases, unless otherwise specified, shall be plaster of Paris finish. Applying Plaster: The first or scratch coat shall be rendered on the metal lath sur- faces and scratched in both directions with a lath scratcher and shall be thoroughly dry before applying the second coat. The scratch coat shall be omitted on brick and tile walls. The second or brown coat shall be applied as follows : When the scratch coat is thoroughly dry, run "screeds" in all vertical angles and at intermediate intervals as required, made absolutely plumb and 118 true by means of a plumb rule reaching from floor to ceiling. Hori- zontal screeds shall be run at base and ceiling lines, and on walls of high stories intermediate screeds between ceiling and floor. These screeds shall be run Unable and true from vertical screeds and left until hard. All spaces shall then be filled, rodded and left absolutely true and plumb to a line or radius as called for on the plans. All ceilings shall be screeded around angles and intervening screeds shall be run at intervals of about six (6) feet, made abso- lutely level, straight and true, and when thoroughly hard shall be filled in and straightened by a rod or darby as in the case of walls. All surfaces, whether vertical, horizontal or curved, shall be made true without waves or other defects in every respect to make a first-class job, with the best workmanship first class and acceptable to the Archi- tect. The third or finishing coat shall be plaster of Paris, unless other- wise specified, and shall be applied after the second coat is thoroughly dry, straightened by means of straight edges, ten feet long, troweled to perfectly true and even surfaces and the entire work left without scratches, ridges, waves, chips, cracks, voids, brush marks, stains, mars or defacements of any sort. All surfaces shall be straight so that a ten-foot straight edge will fit the walls and ceilings at any angle or diagonally on the walls and ceilings. All angles shall be left absolutely sharp, true and clean cut. Special care must be exercised in the execution of the finishing on the curved surfaces to make same true surfaces of revolution as in- dicated by the drawings. The plastering shall extend close to floors and to all openings, flush with grounds. Cement Plaster Wainscot and Base: The walls of all janitor closets throughout shall have a Portland cement plaster wainscot five (5) feet high. Install cement base where called for by drawings, heights as shown and made of best Portland cement, neatly finished with a 1" radius cove shoe to meet the floor surface. 119 Plaster Jambs: Jambs and soffits of window and door openings, wherever shown to be plastered on drawings, shall be finished like the walls and ceilings, with the surfaces perfectly straight and true. Drop Beams: Wherever beams and girders project below the ceilings, in rooms which are plastered, they shall be plastered same as ceilings. Metal Corner Beads: Except where rounded corners are shown or specified, galvanized iron corner beads of a type which shall meet the approval of the Archi- tect sball be put on all salient corners of piers, walls, columns and pil- asters, and shall extend from floor to ceiling. Beads must be put on square, plumb, true, and shall be securely/ anchored to walls. Round Corners: Where rounded corners are shown by the drawings, the same shall be neatly and satisfactorily executed, and made perfect surface of revo- lution, true to scale and full size detail. All salient corners in corridors shall be neatly rounded 3£" radius as shown by the drawings. Plastering Back of Marble: There will be no plaster back of marble work. Ornamental Plaster: Execute all ornamental plaster work of every kind required and as shown by the drawings. All work shall be made in strict accord- ance with details and approved models for the work, in a manner ac- ceptable to the Architect. Plaster Beams and Cornices: Run all plaster beams, cornices, coves, panels, mouldings, and furnish in place all capitals, rosettes and ornaments where indi- cated on the drawings or required by the work. All work shall be in strict accordance with the details and shall be run perfectly true, straight or curved, as required. 120 Model*: All modeling shall be executed by the best and most artistic archi- tectural modelers and sculptors, who may be selected by the Architect at their option. Changes in models, or new models, shall be made, changing and re- changing them until they are satisfactory to the Architect in every respect. Models shall be submitted in place should it be necessary for the proper inspection of same. Staff: All mouldings, rosettes and other ornamental work that cannot be lun in place, except as otherwise specified, shall be of the best quality staff, well secured in place, put up perfectly straight and plumb and all curved surfaces absolutely true. All ornamental plaster work shall be cast in gelatine moulds, under- cut as necessary. Only the best quality of stucco shall be used and all lines, surfaces and ornament shall be true and clean. All work shall be properly and securely "stuck" and anchored, being fastened into place with copper wire, backed with jute cloth and filled in with rattan pieces as necessary, to secure a substantial and se- cure job. All fastenings shall be securely made and all jointings and fasten- ings neatly pointed up so as to be invisible. Heat: Furnish all heat required to properly dry plaster, including sala- manders, fuel and the necessary attendance. Mixing Mortar on Upper Floors: In case any mixing of mortars is required on the upper floors it is to be distinctly understood that only water tight boxes are to be used. Patching: All patching of plaster work required by the Architect after all work has been executed must be done in a very neat manner, leaving neither crack, mar nor stain at any point. 121 Cleaning Ont: When the plaster work is finished remove from the building all staging, tools and debris of every sort arising from this work. Unit Prices: The Contractor shall name one (1) price only for all additions to or deductions from this contract for the respective labor and materials named below; said price to govern until the completion and acceptance of all work called for herein : Plaster per square yard actual measurement of plastered surfaces on walls $. Plaster per square yard actual measurement of plastered surfaces on ceilings $ Plaster per square yard on channel irons and wire cloth, including channel irons and wire cloth. . . ., $ Portland cement plaster, per square yards, on walls $ Portland cement base, per lineal foot $ Plain Keene cement plaster, per square yard $ Scagliola, plain surfaces, in place complete, per square ft. $ Unit price of salamander, including coke, attendance, etc., complete $ 122 ■ CARPENTRY AND CABINET WORK. In General: Furnish all labor and materials to execute, install and complete the Carpentry and Cabinet Work in accordance with the accompanying drawings and as required by these specifications. Scope of This Work: In this work shall be included all labor and materials to execute the rough, finished and cabinet wood work, as shown by the plans and as required by these specifications; together with the Painter's finish of all hardwood, the priming, the painting and graining of the inside of all exterior frames and sashes, except as otherwise specified. In this work shall also be included the finishing of all hollow metal doors, frames and trim, except the elevator hollow metal doors, which shall be finished as herein specified under Ornamental Iron Work. Fireproofing of Wood: All woodwork of every description throughout for the rough and finished work entering into the construction of this building shall be rendered fireproof with a treatment by some process acceptable to and approved by the Building Department of the City of New York. Bough Carpentry and Miii. Work. Timbers : All timbers, studding, furring, etc., shall be sound, weather-sea- soned and perfectly dry; unless otherwise specified, it shall be No. 1 spruce, cypress, Washington fir or other woods as approved by the Architect. Temporary Closing: Close the first story door and window openings with temporary doors and sash; all other openings in exterior walls shall be closed with the permanent sash and glass. Window and Door Frames: All exterior window and door frames, also all exterior sashes and doors for the entire building shall be copper covered construction fur- nished as herein specified under Roofing and Sheet Metal Work. 123 Partitions, Wood Bncks, Blocks, Etc.: Lay out all lines for interior partitions throughout. All parti- tions will be of tile or expanded metal as shown by the drawings. Furnish all necessary wood blocks, bucks, grounds, etc., required around openings to receive the finish. All necessary bucks or studding for grounds for openings shall be furnished and set in place, made as shown by full size details, and made to extend in single lengths the full height of the opening with proper wooden keys nailed on the back where same engage with the hollow tile work. Execute all necessary framing overhead for support of tile and plaster. Where bucks, rough frames, etc., are shown or require grooving for transmission of electric conduits, the same shall be executed to facilitate the installation of wires, etc. Where two or more openings are adjacent the fireproofing will be omitted and the Contractor shall execute all the necessary furring, studding, etc. All frames shall be set plumb and so kept. All openings shall be framed so as to admit of full casings. Back Plans: Buck plans with correct location of all corridor openings shall be prepared, submitting prints of same to the Architect for approval. Grounds: Put up dressed grounds, securely anchoring same in place, for all architraves, picture and wire mould, base and finish of every sort, as will be required to install the wood work for the entire building in a substantial and acceptable manner. The grounds shall be level and straight or plumb, as the case may be, and should the plastering be crooked on account of these grounds, it shall be done over at the Contractor's expense. Grounds and bricks shall be put up absolutely true, level and plumb to receive the finished wood work. In the floor of opening for each door having wood thresholds, pro- vide and install 2"x4" beveled grounds for securing of thresholds. I 124 Finished Floors: All finished floors throughout will be marble, cement, etc., as else- where specified, no wood floor obtaining in the building. Inside Finish: All finish throughout, unless otherwise specified, shall be first quality clear, thoroughly seasoned, kiln-dried, selected stock, highly figured Honduras, Mexican or African mahogany, for which purpose submit samples for approval of the Architect, and after approval the approved samples shall be filed with the Architect, and shall be taken as a. standard for all inside finish work in this contract. The finish for the inside of elevator machine rooms, the 2d story of Main Pent House, and the interior trim in storage rooms in Sub and Sub-sub-basements shall be red birch. All work shall be put together cabinet style, veneered and glued; nailing where necessary, shall be secret nailing with fine finishing nails, and it is hereby understood that a first-class cabinet job in every de- tail will be required. All work shall be finished complete in the shop of the cabinet- maker as hereinafter specified, and the Contractor shall notify the Architect when the materials are ready for finishing, so that the work may be inspected and approved. Inside Frames: All exposed parts of inside window frames shall be mahogany, as above specified for Inside Finish, made and installed as shown by scale and full size details of same. No interior trim, frames, etc., are to be set until the plaster is on and dry, in the judgment of the Architect. Where two or more windows or doors and windows are shown to come together, full openings will be left in the tile partitions, for which such additional furring as may be necessary shall be furnished to make the work come right. Doors: All doors throughout the building, except where otherwise shown or specified, shall be If" thick, made in strict accordance with scale and full size details. 125 The fii'e doors throughout, the entrance doors to stair enclosures, the dumbwaiter doors, the elevator machine room doors, the doors in the sub-sub and the sub-basement (unless otherwise noted) and where- ever so shown or indicated by drawings, will be hollow metal with hol- low metal frames, furnished as herein specified under Roofing and Sheet Metal. These doors will be trimmed with wood on corridor side and with metal on the opposite side, except in the mechanical plant rooms, the trim will be hollow metal on both sides. All door stiles and rails shall be veneered with 3/16" thick sawed veneer on staved cores of thoroughly seasoned white wood or pine; veneered on both faces and on the edges of the stiles. The veneer on edges of stiles shall be not less than §" thick. The panels for doors shall be veneered with not less than 1/20" thick sawed veneer on laminated cores, forming five-ply panels when finished, the two outer layers on either face being of hardwood, the under layer of the two being of birch and the finish layer of mahogany, extra selected stock, highly figured, of a character satisfactory to the Architect. The thicknesses of veneers here specified are the finished thickness of the veneer. All panels shall receive the varnish finish hereinafter specified be- fore they are framed into place, and panel moulds shall be so set as not to interfere with the shrinking and swelling movements of the panels. The water closet stall doors, and the toilet room fly doors shall be IV thick, all veneered as above specified, and made in accordance with the details. Doors marked S. D. shall be sash doors arranged with moulded wood stops to secure the glass as detailed. Doors marked "S. D. T." shall be sash doors, as above, with transoms over. Doors with Grilles: All janitor closet doors throughout, and other doors so shown by the drawings, shall be fitted with an ornamental iron grille in lower panel. The grilles will be furnished as herein specified under Orna- mental Iron for which prepare the panels to receive them and provide the wood stops to hold them in place. Grilles shall be as shown by 126 the detail drawings, for the reception of which execute all necessary cutting, fitting, etc., to make the materials engage in a first class manner. Pent House Doors: The exterior doors and frames for the pent house shall be of cop- per covered construction as specified under Hoofing and Sheet Metal Work. Base and Plinth Blocks: The walls throughout the building, except where wainscoted in marble or specified to have marble or cement base, shall have plinth blocks and base of wood, made in accordance with full size details. Cutting, Boring, Etc.: Execute all cutting, fitting, boring, etc., in the wood finish neces- sary for the installation of the switches, electric conduits, etc., where shown and required, by the Electricians for installation of their work. Wood Thresholds: Each door throughout the building shall be furnished with birch thresholds, moulded according to detail, except where marble or metal thresholds are shown on drawings. Thresholds shall be provided with and rigidly anchored to wood grounds laid in the concrete floor con- struction as above specified. Picture and "Wire Mould: Furnish and set in place picture moulds as indicated, extending same around all rooms and offices, except in closets, the sub and sub- sub-basements, all of which shall be properly secured to grounds, put up perfectly level and true. On the corridor sides, the picture mould shall become the wire mould, made and built out as shown by detail of same. Mould shall continue around all corridor walls for transmission of electric wires, etc. Wood Work Around Plumbing: Furnish and set all material for grounds and temporary supports for setting fixtures, marble, glass work, pipes, etc. 127 The partitions between, behind and around the water closets will be of marble, with hardware as herein specified under Hardware. Exterior Shop Fronts: The first story store fronts, doors, transoms, etc., for same shall be made of steel, ornamental iron (as specified under Ornamental Iron) and mahogany wood work. Sills and transom bars shall be grooved for condensation gutters, which shall be lined with 16 ounce hard rolled polished copper, fitting same with §" conductors, three (3) to a window. The rough ground for securing of the finished wood work shall be rigidly bolted to the structural steel or iron members, furnishing all bolts and washers and executing all drilling, cutting, fitting, etc., to install the work as shown. The transoms in connection with the store fronts shall be made of mahogany, thickness as indicated, hinged at the bottom as the draw- ings show. Where no sash are indicated the glass is to be held in place with wood or metal stops. Interior Shop Fronts: The interior shop fronts on the first and basement stories shall be a combination of wood and glass, with the exposed finish, such as stops, casings, etc., made of selected, highly figured mahogany, the fronts hav- ing a wood base on shop and marble base on the corridor side. Transoms for these shop fronts shall be thicknesses as indicated, made of mahogany, hinged at the bottom ; the doors shall be built up, mahogany veneered, 1$" thick, made for single glass panel. Repairing Woodwork: Repair and make good all damages to woodwork that may be done during the execution of the building, and leave the work in this contract in first class condition, without exception. Cntont Closet Doors: Doors to cutout closets shall be full height of closet, except where otherwise shown in which case they shall be in two tiers, with transom bar made removable so as to give a clear opening the full height of the closet, as the details indicate. 128 Architraves : All exterior and interior openings throughout, unless otherwise shown or specified, shall have moulded wood architraves. Architraves on stair side of doors for enclosed stairs will be of hollow metal as herein specified under Ornamental Iron. Details— Setting Trim: Full size details of all typical trim as above mentioned are shown by drawings and all work shall be made and installed in strict accord- ance with the same ; all frames and finish of every sort shall be put up plumb or level, straight and true ; all trim shall be put up with proper grounds in every case, and well secured to same. All nailing shall be with fine wire finishing nails and shall be concealed as much as pos- sible. Hand Bails: All wood hand rails for the staircase throughout, unless otherwise shown or specified, shall be furnished in place as herein specified under Ornamental Iron Work. Elevator Cars: The elevator cars will be furnished as herein specified under the Ornamental Iron Work. Mirror Frames and Shelf s: Furnish mahogany frames and shelves for all mirrors not shown to have marble frames or otherwise specified, the frame to be moulded and of width as detailed, with the mirror stopped in from the front. For all mirrors throughout having either wood or marble frames fur- nish grounds, wood backing and moulded stops, all in accordance with the drawings. The mirror frames and shelves over office lavatories shall be of birch, with o white enamel finish. Painters Finish fob all Inside Finish. In General: Furnish all labor and material required to finish complete all in- terior wood work, all hollow metal and doors, frames and trim (except the elevator doors, which will be finished as herein specified under 129 Ornamental Iron, and the interior side of all hollow metal and copper covered frames and sashes throughout the building. Samples : Six samples 12"xl2" in size of the woods as called for herein, stained and finished, shall be submitted to and for approval by the Architect. The approved samples shall be filed with the Architect and shall be taken as the standard of the work to be executed for the fin- ishes herein called for. Finish For Woodwork: Finish complete all mahogany and birch throughout the building with stain and varnish finish as below specified. All work shall be finished complete at the shop before being brought to the building and simply retouched after it is set in place. All panels shall be finished before they are framed into place. Notify the Architect when the work is ready for finishing, so that he may inspect it before the finishing is executed. Materials : All varnish for this work shall be of the very best grade, con- taining not less than 25 per cent, of imported vegetable gum, and shall be free from resin or petroleum products, giving when dry a hard, tough elastic film. All varnish shall be applied in the consistency manufactured and shall not be thinned by mixing with turpentine or any other ingredi- ent. All paint shall be composed of pure white lead and raw linseed oil with not to exceed 5 per cent, of drier. White lead shall contain not less than 70 per cent, carbonate of Jead to 30 per cent, lead hydroxide, and not more than 75 per cent, carbonate to 25 per cent, hydroxide. Oil shall be pure raw linseed oil free from "foots." Drier shall be free from gums, resin or petroleum products. Shellac shall be composed of gum shellac cut in pure grain alcohol. All materials shall be delivered at the building in unbroken pack- ages, bearing brand and maker's name, materials requiring mixing 130 shall be mixed on the premises. All materials shall be subject to in- spection and approval of the Architect and materials rejected shall at once be removed from the premises. Mahogany Finish: All mahogany shall first be treated with a mahogany stain, then filled with a mahogany woodpaste filler, colored to match the stain, after which it shall receive one coat of white grain alcohol shellac, fol- lowed by three coats of the piano varnish above specified. Sufficient time shall be allowed for each coat to dry before the following coat is applied. The shellac and the first coat of varnish shall be sandpapered smooth with No. sandpaper, and the last two coats shall be rubbed down with pumice stone and water to a dull cabinet finish. All work shall be finished clean and sharp without any fat edges or other un- even parts. Exterior entrance doors shall be finished with a durable "exte- rior" or spar varnish that will withstand the weather. Birch Finish: All birch, except as otherwise specified, shall first receive a coat of oil stain to bring it to a color to match mahogany or walnut as directed, then apply one coat of orange grain alcohol shellac, sand- paper well and finish with varnish in the same manner as specified for the mahogany, rubbed to a dull cabinet finish. The birch frames for office mirrors shall receive a coat of shellac, followed by a coat of white lead and oil, lightly sand papered, and then treated to four additional coats of white enamel paint, sand papered between coats, the last coat having an egg shell finish. Finish of Unexposed Work: All inside finish woodwork shall be given one heavy coat of white lead and linseed oil on the back to protect it from moisture. Graining: All exposed surfaces of the copper clad frames and sash on the interior and all exposed surfaces of hollow metal doors (except elevator doors), frames and trim shall be painted two (2) coats of pure white lead and linseed oil in addition to the priming coat, and then grained 131 in oil to match the hard wood finish. When thoroughly dry the work shall be given two (2) coats of piano varnish above mentioned and lubbed to a dead finish as specified for hardwood finish. Repairing Woodwork: Make good and repair all damages to woodwork that may occur during the erection of the building, and leave all work in a first class condition, without exception, at completion. Haedwabe. Rough Hardware: All rough hardware in connection with carpentry work shall be furnished and installed and shall include all nails, spikes, oval-headed bronze screws and patent washers for stops, and other hardware required. Finish Hardware: All finish hardware required to complete the building will be fur- nished as herein specified under Hardware. Set all hardware in place in a very neat and workmanlike manner, employing for setting of hardware none but the most skillful mechanics, accustomed to such work, and all hardware shall be left at the comple- tion of the building absolutely free from tool marks, mars or deface- ments of any kind, and in first class working order, to the entire satis- faction of the Architect. Unit Prices: Name one price only for any additions to or deductions from this con- tract for the respective materials named below, complete in place, said price to obtain until the completion and acceptance of all work called for herein : Corridor doors with transom and trim, including set- ting of all hardware $ Inner office door with transom, trim and threshold, in- cluding setting of all hardware $ Communicating doors with trim and thresholds, includ- ing setting of all hardware $ Borrowed lights, corridor, per frame $ 132 Borrowed lights, intermediate partition, per frame... $. Picture mould, per lineal foot $. Wire mould, per lineal foot $. Typical office mirror frame complete ., $. Base, per lineal foot $. Water closet stall door $. Typical interior store front, including door and tran- som, each $. Birch threshold in place $. 133 MARBLE AND TILE WORK. In General: Furnish all labor and material to execute and install complete the Interior Marble and Tile Work in accordance with the accompanying drawings and as required by this specification. Scope of Contract: In this work shall be included all marble work of every descrip- tion for staircases, vestibules, lobbies, passages, halls, corridors, toilet rooms, water closet and urinal stalls ; the marble and tile floors and any other marble, or tile work shown by the drawings or hereinafter speci- fied. Marbles : The Vermont Verde Antique, white Alabama and gray Tennessee marbles herein specified shall be domestic stock; all other marble, un- less otherwise specified, shall be foreign stock. All marbles shall be selected, first quality, free from all cracks, stains, porous streaks, sand holes or flaws of any sort, and shall be selected to run in even shades. The marbles shall be of the several kinds herein specified or as marked on drawings. Vitrified Tile Floors: All vitrified tile for floors shall be 2" hexagonal tile, first quality in every respect, free from cracks, craze, sprawls, stains or flaws of any sort, uniform in size with true and plane surfaces and square edges. Scagliola: The scagliola work will be furnished as herein specified under Plaster Work. Samples: Submit samples of the marbles for this work to the Architect for approval, which shall be not less than 12"x24"xl", polished on one side, and honed finish on the other. Finish of Marble Surfaces: All exposed marble surfaces, except flooring tile, stair treads and platforms, shall have a high polish. Floors, stair treads and platforms shall have a honed finish. 134 Joints : All marble shall be jointed as indicated on the detail sheets. All joints shall be honed and shall finish not in excess of 1/16 unless otherwise specified, being V-joints where required by full size details. All joints at salient angles, other than rounded corners, through- out shall be quirk mitre joints, or as shown by detail drawings, exe- cuted in a neat and first-class manner, acceptable to the Architect. Size: All marbles shall be of sizes and thicknesses required to execute the work as the drawings indicate. Mouldings: All mouldings for marble work shall be made with the profiles true to details, lines in perfect alignment and executed with the work- manship first class in all respects. Exposed surfaces shall be polished. Setting : Marble work shall be set after the fireproof walls and ceilings are in place. Where used adjacent to plaster it shall be set after plastering. All marble shall be set straight to the lines indicated and the work executed in accordance with details and left in a perfect state, free from stain, mar or defacement of any sort. Cutting, Fitting and Filling: Drill and cut all holes in marble work in accordance with direc- tions for work which engages with the marble. Execute all cutting of tile, concrete, brick and other walls, and wherever the same is necessary for the proper installation of this work. Execute all necessary furring and filling back of marble to bring the finished surfaces of this work to the lines and positions designated on the drawings. Anchors and Supports: Furnish all metal anchors, cramps, dowels, braces, hangers, tee irons, etc., for anchorage of work in this contract. All marble shall be secured in place by concealed brass or copper anchors. 135 Water Closet Stalls: The partitions, backs and door jambs of water closet and urinal stalls shall be of blue veined Italian white marble, all made and as- sembled as shown by typical details of same. The water closet and urinal stalls shall be put together by a system of grooves, dowels, and cramps, and constructed in a most rigid and substantial manner, without the use of exposed metal work. All dowels and anchors shall be of copper or brass. Submit for Architect's ap- proval detail drawings showing the method of construction proposed. Hinges and catch for stall doors will be furnished as herein speci- fied under Hardware, for which execute the necessary drilling and cut- ting of marble for their installation. First Story Marble Work: All marble through first story, including the main staircase from basement to second floor, except marble for floors, shall be Botticino. Floors shall be light grey Tennessee. Alternate Proposition: The Contractor shall submit alternate proposition on using mar- bles for first story and main staircase marble work, submitting a sep- arate proposition for each kind as follows: Tavernelle Clair, Haut- ville and Istrian. Second Story Marble Work: All marble throughout second story shall be Basseville, except the floors, which shall be light grey Tennessee. Wainscot and Base: All elevator corridors throughout, unless otherwise specified, shall be wainscoted with English veined Italian white marble with a 12" base of same marble. All oilier corridors, except as otherwise specified, shall be pro- vided with 12" English veined Italian white marble base. Elevator corridor wainscots throughout shall be heights as shown by typical details, and shall butt the wood trim at all openings, with plinth blocks provided to receive the trim as shown. At all salient angles in elevator halls and corridors and wherever 136 round corners are called for, provide a marble quadrant on a radius as shown by full size detail. Toilet room wainscots shall be 7'0" high, including 10" base and without cap. Marble base where there is no wainscot shall be of the several heights shown by details. Elevator corridor wainscots shall be heights as shown by typical details, and shall butt the wood trim at all openings, with plinth blocks provided to receive the trim, as shown. At all salient angles in elevator halls and corridors and wherever round corners are called for, provide a marble quadrant on a radius as shown by full size detail. Toilet room wainscots shall be 7'-0" high, including 10" base and without cap. Marble base where there is no wainscot shall be of the several heights shown by details. Plinth Blocks: For all openings in rooms having marble base, furnish marble plinth blocks to receive the trim, of same marble as the base, made in accordance with details. Composition Stairs: All stairs, except otherwise shown or specified, shall have treads, landings and platforms of composition. The composition shall be either Asbestone, Asbestolith, Monolith, or composition equal in the judgment of the Architect, the material applied in accordance with the specifications of the manufacturer of the material used. Marble Staircases: The staircases extending from basement to the second floor shall have all exposed surfaces made of Botticino marble (except where otherwise indicated), built upon the structural iron work as specified herein under Ornamental Iron Work. Other steel, iron, etc., required and not shown, shall be furnished in connection with the marble. The treads and landing for these staircases shall be If" in thick- 137 ness, all of grey Tennessee marble, risers $" in thickness, of Botticino marble. Stairs in toilet rooms shall have 1{" treads and f" risers. The marble newels, strings, faseias, balusters, rails, where of mar- ble, etc., shall be neatly and accurately made, carefully following the scale and full size details. Special care must be exercised in the execu- tion of curved surfaces to preserve the continuity of lines, mouldings, planes, etc., in a manner satisfactory to the Architects. Models, Carvings, Etc.: Furnish all plaster models for the ornamental work, using such modelers as the Architect may direct. Submit to the Architect photo- graphs in triplicate of all models for revision and approval. All carved and ornamental work shall be in strict accordance with the models and shall be executed by the most skillful architectural carvers. Any work not in accordance with the models will be rejected and shall be at once removed from the premises. All work shall be executed in a first class manner to the entire satisfaction of the Architect. Floors : All marble floors throughout shall be of light grey Tennessee and unless otherwise shown or specified, shall be 10 by 20 inch tile. All tile shall be not less than $ inch thick. Toilet rooms throughout shall have white vitrified tile floors. The floor for the engine and pump rooms shall be laid with im- ported vitrified impervious 6"x6" quarry tile. Base: The base for all wainscot, except otherwise specified, shall be 12" high and shall be made of the same marble as the wainscot above, ex- cept in first story work. The base for all first story marble work shall be Vermont Verde Antique, heights as shown by the drawings, prepared to engage with the cove shoe as indicated. All base throughout shall have a highly polished finish on exposed surfaces. 138 Thresholds: Where marble, cement or tile floors occur on both sides of an open- ing, and where they join one with another, marble thresholds shall be provided unless metal thresholds are shown on the drawings. In intermediate or office division partitions where cement floor ob- tains on both sides of the openings, birch thresholds will be provided as herein called for under Carpentry. The thresholds shall be of marble to match adjoining marble floor or floor border, or where not in contact with marble floor, shall be of light grey Tennessee marble. All thresholds shall be If inches thick with beveled edges, bedded securely and solidly into place, so that top edge except where otherwise shown, will not be less than | inches above the floor surface, all in accordance with full size details. Concrete Foundation for Floors: For all marble and quarry tile floors the concrete foundation shall be brought parallel to and within two (2) inches of the finished floor surface upon which deposit the necessary mortar and bedding for the bedding of the tile. Setting Marble, Quarry and Ceramic Tile Floors: Deposit upon the concrete foundation a bed of cement mortar made of two (2) parts of Portland cement with three (3) parts of clean sharp white sand. Before depositing the bedding mortar on the concrete the entire surface of the concrete shall be well saturated with water to prevent the too rapid absorption of the water from the bedding mortar. Mortar shall be spread evenly over the required surface to estab- lish the floor levels for the tile so as to avoid excessive tamping of tile to obtain proper level. All floor tile shall be set so as to have joints reduced to a mini- mum, and in no case are they to exceed 1/16". All floor tile shall be well bonded, matched in color, joints kept true to line, all upper surfaces kept level and in the same plane, each tile well and securely bedded in the cement mortar. All marble floors shall be holy-stoned upon completion and left in an absolutely perfect condition, acceptable to the Architect. 139 The joints between the tile shall be grouted from the surface with Portland cement, mixed with water to the consistency of cream, filling all joints perfectly. Wash off all cement from the surface of the tile before it sets, making a first-class joint in every detail. Cleaning: At completion, clean all marble and tile, leaving the entire work in perfect condition, satisfactory to the Architect. Marble Alternates: In place of the marble above mentioned the following substitution may be made: For Floors : Alabama, Colorado Yule, etc. For Base and Wainscot (first floor excepted) : Light gray Ten- nessee, Colorado Yule, Pentilikon, Alabama, Light Cloud Vermont, etc. Unit Prices: Name one price only for all additions to or deductions from this contract for the respective materials and labor named below; said price to obtain until the completion of all work called for herein and its acceptance by the Architect. Gray Tennessee marble floors, including bedding under same, per square foot $ ,. .,. . Vermont Verde Antique marble base, per lineal foot. . $. Ceramic tile floor, including bedding under same, per square foot $ Quarry tile floor, including bedding under same per square foot , ..,$.. Water closet partition slabs, blue veined Italian, per square foot $ Water closet and urinal backs, blue veined Italian, per square foot ,. . . $ ,. ., Water closet stiles, blue veined Italian, per square foot $. . . ... .,. . Water closet partition slabs, white Alabama, per square foot $.. Water closet and urinal backs, white Alabama, Ver- mont or Pentilikon, per square foot , .$..,. .... .,. . Water closet stiles, white Alabama, Vermont or Pen- tilikon, per square foot 1 ...,$. . 140 English Veined Italian marble wainscot, per square foot $. "White Alabama, Vermont or Pentilikon marble wains- cot, per square foot $. English Veined Italian marble base, per lineal foot $. "White Alabama, Vermont or Pentilikon marble base per lineal foot $. Vermont Verde Antique marble base, per lineal foot. $. 141 GLASS AND GLAZING. In General: Furnish all labor and materials to execute and install complete the Glass and Glazing Work in accordance with the accompanying draw- ings and as required by this specification. Scope of Contract: Furnish and set in place all glass and mirrors throughout. The wire glass in skylights, the plate glass for Directory Boards, will be furnished as herein specified under Roofing and Steel Metal and Orna- mental Iron Work. Exterior Glass: The glass in all exterior openings on street elevations of the build- ing, the entrance vestibules and first story corridors, also the light courts of the building, unless otherwise shown or specified, shall be of first quality polished plate glass, uniform in thickness, the glass for all the windows, except the store fronts, shall not exceed ^ inch in thickness, and the store front glass not more than § inch. The glass for toilet room windows in exterior walls of the building shall be chipped plate glass. Interior Glass: First Story: All glass throughout, unless otherwise shown or specified, shall be polished plate. Second to Thirty-seventh Stories, Inclusive: All corridor entrance doors shall have chipped plate glass panels. All glass above transom bars shall be first quality D. T. A. A. sheet glass. Hollow Metal Doors: All glass for hollow metal doors throughout where shown and re- quired shall be polished plate wire glass \" in thickness. Pent House: All glass for pent house doors and interior windows shall be D. T. A. A. glass. 142 Elevators and Stair Enclosures: All elevator and stair enclosures throughout, unless otherwise shown, shall have polished plate wire glass. Glass Sizes: All sizes for glass shall be taken from the actual frames and sash. This contract contemplates all glass set in place and the Contractor shall assume all responsibility in regard to correct sizes. Sizes marked on drawings are approximate and shall be used for estimate only. Mirrors: Furnish and set in place all mirrors for toilet rooms and wherever indicated on drawings. All sizes shall be marked on drawings. If sizes of mirrors over lavatories are not indicated or marked on draw- ings the width of mirrors shall be equal to the combined length of the lavatories, and the height as shown by drawings. All mirrors, unless otherwise shown, shall be held in place with wooden stops furnished as herein specified in Carpentry. Furnish and install felt backing for all mirrors where shown or required. All mirrors shall be first quality American polished plate, with the silvering uniform and perfect over entire surface ; the surfaces of the glass for the mirrors shall be absolutely true and perfect planes. Setting: "Where glass is set in iron frames it shall have soft wood cushions or bearings, furnished and set in place complete, and shall be secured with stops as shown. The glass in corridor and other partitions will be held in place with wood stops, secured and set in place in a very careful manner, care being taken not to mar the finished woodwork. The glass for all exterior frames and sash, unless otherwise shown or specified, shall be held in place with stops as details indicate. The remaining glass throughout the work, unless otherwise de- tailed, shall be bedded in putty, secured in place with glazier's tacks, and then neatly puttied the full section of the rabbet. The putty shall be first-class pure Unseed oil putty. 143 Sash Bars: Where corridor openings are too large for the largest size of D. T. A. A. glass, provide and set in place a small and neat heavily nickel-plated brass sash bar, as the Architect may detail or select, and securely fasten same in position. Breakage : The Contractor shall take extraordinary precaution for the pro- tection of the glass in this contract after same is put in place in the building, and he shall be held responsible for all breakages in the glass until the building is completed and accepted. Cleaning : At completion, or when so ordered, clean the glass of all oil or other defacement, wash and leave perfectly clean. Unit Prices: The Contractor shall name one price only for any additions to or deductions from this contract for the respective materials and labor named below; said price to obtain until the completion and acceptance of all work called for herein : Discount on polished plate glass from list dated $ Discount on D. T. A. A. glass from list dated. .1 $ . Discount on mirrors from list dated $. Price per square foot for chipping plate. $. . . .1 Price per squart foot for 3/16" maze glass $. 144 MAIL CHUTES. In General: Furnish all labor and materials to execute and install complete the Mail Box and Mail Chute work in accordance with the accompany- ing drawings and as required by this specification. Scope of Contract: Furnish and install complete in working order a Mailing Equip- ment, consisting of four (4) mail boxes located in first story of the building and two mail chutes for each box, serving all stories to and including the thirty-six story. Mail Boxes: The mail boxes shall be ornamental cast bronze, made in accord- ance with the scale elevations and sectional details of same, with doors, flaps, etc., complete in every respect. The work shall be executed and constructed in a neat, careful and artistic manner, with the ornamental parts well modeled, cast, hand chased and the whole worked out in accordance with scale and full size details, in a manner to meet the approval of the Architect. The boxes shall be securely and rigidly anchored in place with secret anchors. Height above floor as shown. The mail box metal shall have a statuary bronze finish. Chutes : The chutes shall start from a point 4' 6" above the thirty-seventh story extending down through the various stories to and connecting wilh the mail boxes in the first story. The chutes shall be of metal and plate glass carefully and sub- stantially constructed, accurately installed, absolutely plumb through- out the entire height, and rigidly secured in place. Letter drop openings in chutes shall be provided for all stories above the first floor. Finish: All metal work for the enclosure and the chute above the 1st story shall be of ornamental iron, with a first-class and durable imita- 145 tion bower-barff finish, with the finish and workmanship first-class, satisfactory to the Architect in every detail. All exposed work of the chutes on first story, except glass work, shall have a statuary bronze finish. Installation : Execute all cutting and fitting, and make all connections in the building, and furnish and set in place all angles, sleeves and other fittings necessary properly to support and install this work. Apparatus: This apparatus shall be of the United States Standard, without change of any kind, made and installed in the building in accordance with and subject to all the conditions imposed by the Post Office De- partment. 146 HARDWARE. In General: Furnish all labor and materials to execute and complete the Hard- ware work in accordance with the accompanying drawings and as re- quired by this specification. Scope of Work: Furnish all finished hardware of every description required to complete the building, including the hardware for all copper covered work and hollow metal doors. Tbe hardware in connection with bronze, ornamental iron work will be furnished as herein specified under Orna- mental Iron and Bronze. Rough hardware in connection with copper covered window and door frames and the carpenter work will be furnished as herein speci- fied under Carpentry and Roofing and Sheet Metal. Workmanship : All work shall be cast ; no stamped or spun work shall be used. Workmanship shall be first class in every respect to the entire satisfaction of the Architects. Design: Such portions of the sub-sub, sub-basement, basement and pent bouses as are used by the building employes only shall have hardware of plain bevel edge design ; all other portions of the building through- out shall have hardware of special design as detailed. Plaster models of hardware shall be submitted to the Architect for their approval. Samples : It is understood that it is the intention of this specification to cover materials the best of their respective kinds. A complete line of samples, will be required for the written approval of the Architect as a part of this specification. These samples to remain on file and to be used in comparison with the material furnished, which must corre- spond in every way. 147 Templates: Furnish all necessary templates and samples of hardware for cop- per covered frames, sashes and doors, also the hollow metal doors, so the same may be prepared for the reception of hardware at factory before shipment. Finish: The hardware for first story shall be of cast bronze metal, statuary bronze finish. The hardware for toilets, and wherever same abuts marble, shall be of the best silver bronze or white metal. The hardware for exterior side of pent house doors shall be brass or bronze. The hardware for all other portions of the building throughotit shall be of the best quality, barff black rustless iron. Hollow Metal Doors: All hollow metal doors, except as otherwise specified, shall have typical hardware, same as the hardware for wood doors of a similar character, which shall in every respect comply with the requirements of the National Board of Fire Underwriters. All hardware for these doors shall be packed with machine screws. The hardware for the elevators and automatic fire hollow metal doors shall be as herein specified under Ornamental Iron and Roofing and Sheet Metal. Locks: All locks shall be first-class in make, with solid bronze bolts, hav- ing exposed parts together with striking plates finished to correspond with trimmings. The striking plates shall be of the box type and for knob locks shall have lips made to protect the woodwork. All cylinder locks shall have special keyway section, three (3) grooved keys to each lock, and each cylinder shall have five (5) pin tumblers. Master Keying : The locks for each story shall be master keyed and the locks for the entire building grand master keyed. 148 Knobs: All door knobs shall have long shanks, with supporting thimbles and threaded spindles, and shall be made to attach rigidly to spindles by a locking device without the use of side knob screws. Butts: All butts shall be extra heavy cast metal, self-lubricating, steel bushed or anti-friction, five-knuckled, loose in pin, with pin retaining device and with tips of proper size for the door on which they are used. Transoms shall have tight pin butts. There shall be three (3) butts for each door, over four feet in height. Double acting fly doors shall have jamb hinges which will not per- mit the door to sag in any portions of its arc. Bolts: All top and bottom bolts for doors in pairs shall be of the lever eccentric type, and the bottom strike plate for pairs of doors to offices, corridors, passages, etc., shall be of the self-closing type. Door Holders: All door holders unless otherwise specified shall be of the plunger type. Butting Blocks: Butting blocks shall be iron, rubber tipped, and are required for doors without spring and check which do not swing against marble. Checks and Springs: Door checks and springs shall be of proper size for the doors on which used. Provide brackets for support and installation of checks where necessary. Schedule: The following schedule is inserted to give an understanding of what is required for the doors and windows named, but is not intended to include all hardware required for the building. Carefully examine 149 all plans, elevations, scale and full size details, and shall furnish all hardware of whatever description necessary to complete the building. All hardware not particularly designated in the following schedule shall correspond to that specified in every way. Building Entrance and Vestibule Doors: Hardware furnished as specified under Ornamental Iron and Bronze. Doors From Streets to Stores, First Story: Doors banging to metal. Butts, three 6"x5" anti-friction. Special store door handles and heavy cylinder looks. Letter plate and hood special. Springs and checks with brackets. Door holder. When in pairs use flush bolt, top and bottom. Doors From Main Arcade to Shops, Basement and First Story: Same as next above, doors hanging to wood. Omit letter plate and hood. Doors to Enclosed Stairs Openings: Butts 5"x5". Pull and push plates, special. Checks and springs. Corridor side, first story, pull and push plates without locks. Typical Corridor or Outer Door to Offices and Similar Doors in all Stories, from Basement to 36th Story, Both Inclusive: Butts 5"x5". 5£" cylinder office latch with self-locking bolt and auxiliary bolt to deadlock the main bolt and the stop work. Knobs and escutcheons, special. Letter plate and hood, special. Check and spring. 150 Door holder. Top and bottom bolts, where in pairs. Typical Inner Office Door: Butts 5"x5". Cylinder office latch 5-|", with self -locking bolt and thumb piece on inside which, when thrown, will render keys inoperative. Knobs and escutcheons, special. Check and spring. Door holder. » Butting block. Typical Transom: Butts 3"x3". Lifter class No. 4, f " diameter rod, of length adapted. Stay chains where required. Typical Communicating Door Between Offices: Butts 5"x5". Three bolts communicating door lock, with key mechanism which will render thumb pieces inoperative. Knobs and escutcheons, special. Butting block. Typical Toilet Room, Rest Room Doors: Butts 5"x5". Double cylinder deadlock, all locks on one key. Pull and push plate, special. Check and spring. Typical Doors to Janitor Closets: Butts 5"x5". Mortise latch without cylinder. Knobs and escutcheons, special. 151 Pipe Shaft Doors and Doors to Cut Outs and to Elevator Ma- chine Rooms: Same as next above, substituting cylinder office latch 5$'-, all latches on same key as toilet room doors ; where in pairs- add top and bottom bolts. For cut-out closet and machine room transom doors substitute catch in place of cylinder latch and add bolts for removable transom bar. D. A. Doors in Public Toilets: Double acting spring hinges, extra strong. Push plates, special. Water Closet Stall Doors: Clamp hinges reverse spring as detailed. Indicator bolts, strike special for marble with rubber buffer. Special hook and bumper as detailed. Hardware for marble to attach with special head bolts. Plumbing Space Doors: Hinges special. Cylinder dead lock, all locks on same key as toilet room door. Typical Check Rail Sash: Sash fasts, extra heavy. Sash socket with four screws. Bar lift, two for each lower sash, special. First Story Corridor Transom Windows: Pivots and sash fasts, extra heavy. Sash sockets with four screws. Stay chains — two for each sash. Sub-sub, Sub-Basement and Pent House: Hardware as required and adapted to location. Ceiling Light Sash Beneath Skylights: Butts, two to each sash. Catch for each sash of proper size. 152 Cabinet Hardware: Furnish all necessary cabinet hardware of kind adapted for cases, drawers, etc., and wherever required. Locks shall be cabinet cylinder locks. Unit Prices: It is understood and agreed that the following net prices for ma- terials delivered at the proper place in building shall govern any and all additions to and deductions from this contract, until the com- pletion of the work called for herein and its acceptance and the issu- ance of the final certificate by the Architects : Hardware for street entrance shop doors ■,..,. .$. Hardware for door from main arcade to shops , $ Hardware for door to enclosed stairs, opening on corridors $ Hardware for typical corridor door (no trans.) $ Hardware for typical inner office door (no trans.) ... $ Hardware for typical transom $ Hardware for typical communicating door $ Hardware for typical toilet room door $ Hardware for typical cut-out door, double doors, two tiers $ Hardware for typical machine room doors, double doors, two tiers — $ Hardware for typical janitors' closet door $ Hardware for typical door to pipe shaft. $ Hardware for double D. A. doors in toilet rooms $ Hardware for typical W. C. stall door $ Hardware for plumbing space doors $ Hardware for typical check rail sash $ Hardware for typical side hinged sash $ 153 LIGHTING FIXTURES. In General: Furnish all labor and materials to execute and install complete the Lighting Fixture work in accordance with the accompanying drawings and as required by this specification. Scope of Contract: In this work shall be included all light fixtures, except as other- wise specified, delivered at the building, hung and connected to the wiring system, with all insulating joints, wiring, sockets, shades and holders complete ready to receive electric lamps. Fixtures : All outlets, unless otberwise specified, shall be provided complete with fixtures of types and designs as shown by the drawings and as hereinafter specified. All fixtures shall be electric throughout except where combination gas and electric outlets are shown on plans, for which combination fixtures are to be supplied. For the number of fixtures and lights, see drawings. There will be no fixtures in this contract for floor outlets, base- board outlets or drop cord outlets unless specifically stated to the contrary. Special Fixtures: The special fixtures shall include all light fixtures for the first story entrance vestibule, main arcade, elevator and staircase lobbies and 1st story corridors, for which an amount of ten thousand dollars shall be allowed and included in this contract. The special fixtures shall be suspended from ceilings with chains, varying in length with height of ceilings. Typical Fixtures: The typical fixtures include the following: 1 light outlet corridor ceiling fixture. 2 light outlet corridor ceiling fixture. 1 light outlet typical ceiling fixture. 2 bight outlet typical ceiling fixture. 154 3 light outlet typical ceiling fixture. 4 light outlet typical ceiling fixture. 5 light outlet typical ceiling fixture. 6 light outlet typical ceiling fixture. 1 light gas bracket. 1 and 1 light combination bracket (stairway light). 1 and 2 light combination bracket (exit light). 2 light electric bracket (floor sign, stairways). Materials and Workmanship: All fixtures, both typical and special, unless otherwise specified, shall be made of brass metal. All materials, tubing, spun work, etc., shall be straight, true and of proper size to execute the work in a first-class manner. The work shall be carefully and accurately made and shall be as- sembled and executed in such a manner as to obtain finished and per- fect results in every detail. All special fixtures shall be of cast or wrought metal throughout with no spun work. All castings shall be clean, sharp and well modeled, and all turned work regular in form without flaws. All ornamental portions of the cast metal shall be neatly executed, hand chased, and finished in an artistic and skillful manner, subject to the approval and ac- ceptance of the Architect. All work shall be well and neatly fitted together. No spelter work or stamped metal shall be used in the fixtures. Models: All modeling for the decoration and ornamental work of the fixtures shall be executed by skillful and artistic modelers, selected by the Architect, and changes shall be made in models, or new models made, changing and rechanging them until they are satisfactory to the Architect in every respect. Finish: All special fixtures throughout shall have a brushed brass finish. All typical fixtures throughout except as otherwise shown or here- 155 in specified shall be first copper plated (black) and shall then have a coating of black finish baked on hard. Inspection : Furnish for all fixtures a certificate of inspection from the Board of Underwriters and City Inspection Departments controlling same. Measurements : Take all necessary measurements for this work at the building in order that his work may fit that already in place. Care must be taken that the canopies will cover the wiring work at outlets, this Contractor seeing that light wires are brought to proper locations. Design: The fixtures shall be of special design, made in strict accord with drawings and details for same as shown. Insulation: Provide all insulating joints, the insulation must be of such char- acter as will comply with the rules of the National Board of Fire Un- derwriters. Wiring: All wire shall be of rubber covered Habirshaw Bed Core, Sim- plex Couchouc, or other wire equal to the above, in the judgment of the Architects, and no wire shall be less than No. 18 B & S gauge. Sockets: All sockets for typical ceiling fixtures shall be Benjamin weather proof sockets of the numbers and with form of holders noted on the drawing; sockets where so noted shall be without bushings. All other sockets shall be of the Edison screw base type, of a make approved by the Architects. Edison type sockets shall be provided with keys where shown or required. Shades, Globes and Reflectors: All fixtures, unless otherwise shown, shall be provided with shades or globes complete, which for typical fixtures shall be of Alba glass, 156 Haskins Lucida glass or similar glass or other manufacture equal in the judgment of the Architect, and for special fixtures shall he glass of a size, character and design as shown by scale and full size drawings. Gas brackets have no shades. Exit and stairway lights shall have red glass globes and panels as shown. Unit Prices: The Contractor shall name one price only for all additions to or deductions from this contract for the respective labor and materials named below; said price to obtain until the completion of all work called for herein and its acceptance by the Architect : Typical Fixtures: One light typical ceiling fixture $ Two light typical ceiling fixture. $ Three light typical ceiling fixture $ Four light typical ceiling fixture $ 250 watt typical ceiling fixture $ One light gas bracket $ One and one light combination bracket $ Two light exit light $ Two light stairway light (floor sign) $ 157 PAINTING. In General: Furnish all labor and materials to execute and complete the Paint- ing Work in accordance with the accompanying drawings and as re- quired by this specification. Colors : All colors for the various painted surfaces 6hall be as hereafter selected by the Architect. Materials: All paint for work in this contract shall be composed of pure white lead and raw linseed oil with not more than 5% of drier, and coloring pigments to give the desired tint. White lead shall contain not less than 70% carbonate of lead to 30% lead hydroxide nor more than 75% carbonate to 25% hydroxide. Oil shall be pure raw linseed oil free from "foots." Drier shall be free from gums, resin or petroleum products. Shellac shall be composed of gum shellac cut in pure grain alcohol. Putty shall be composed of white lead paste mixed with dry white lead to the proper consistency and colored to match the paint. All materials for painting shall be delivered in unbroken pack- ages bearing brand and maker's name and shall be subject to inspec- tion. All mixing of materials shall be done at the building. Materials rejected shall at once be removed from the premises. Priming: All galvanized iron work will be primed as herein specified under Sheet Metal Work. All wood work requiring painting unless otherwise herein speci- fied, shall be primed with white lead and linseed oil. Exterior and Interior Hard Wood Work: All exterior and interior hard wood work will be finished as herein specified under Carpentry Work. 158 Exterior and Interior Metal Work: All exterior copper work shall be left in its original condition, un- painted. The hollow metal doors and frames shall he painted as herein spec- ified under Painter's Finish in Carpentry Work. All galvanized iron work shall he given three coats of lead and oil paint, in addition to the priming coat. All exposed steel beams between elevator cars on the various floors, and where otherwise exposed throughout the building, shall be painted three (3) coats of white lead and linseed oil in colors as directed, in addition to coats as herein specified under Structural Steel. Priming of Plaster: All plaster surfaces throughout which are to be painted or kalso- mined shall be treated to a priming coat of an approved Stain-Killer satisfactory to the Architect. Painting of Plaster: All plaster surfaces of the following rooms shall be painted with two (2) coats of linseed oil and white lead paint in not more than three tints. The last coat in all cases shall be carefully stippled to obtain a dull smooth surface. Basement: The elevator and staircase halls, corridors, toilet rooms and util- ity closets. First, to and including Fifth Story: All rooms throughout. The plain and ornamental plaster surfaces of the Main Entrances and Vestibules, the Main Arcade, the corridors, the elevator and stair- case lobbies on the first and second story shall be painted with three coats of lead and oil in not more than five tints. Sixth to Thirty-Sixth Stories, Inclusive: The elevator and staircase halls, corridors, toilet rooms, freight rooms and utility closets. 159 Enclosed Stairs: The interior walla of all stair enclosures shall be painted from top to bottom. Elevator Shafts: All elevator shafts throughout shall be painted from top to bot- tom. Tinting of Plaster: All surfaces of plaster throughout, not otherwise specified, after priming as above mentioned, shall be tinted with best quality kalsomine in not more than three (3) colors, tints to be selected by the Architect. Unit Prices: The Contractor shall name one price only for any additions to or deductions from this contract, for the respective materials and labor named below; said price to obtain until the completion of all work called for herein and issuance of final certificate by the Architect. Painting plastered walls (3 tints) per square of 100 ft. $ Tinting plastered walls per square of 100 ft $ 160 MECHANICAL EQUIPMENT. Boilers, engines, generators, ejectors, stack and ceiling lining, re- frigeration, heating, ventilation, elevators, wiring, plumbing, gas fit- ting and all mechanical equipment throughout the entire building shall be provided and installed complete and ready for operation. All material and workmanship entering into this installation must meet with the approval of the Architect, who reserves the right to reject any material not in accordance with these specifications, either before or after installation. All material herein mentioned shall be furnished and installed complete and shall be the best of its kind. Dimensions taken at the building shall govern all construction. Drawings : The Architect will furnish certain plumbing, heating and venti- lating drawings and diagrams which, with such writing, interlineations, figures and details as may be upon them, shall be considered as part of and illustrating these specifications. The Contractor, however, shall furnish complete working draw- ings of each branch of the mechanical equipment, showing complete layouts and work in detail. These drawings and details shall be sub- mitted to the Architect for his written approval, which approval must be obtained before any work is begun. Layout of Machinery: The general layout of machinery as shown on drawings is not abso- lute, and is subject to such changes as will admit of better adaptation of the machinery for the work it is to perform, but it is to be confined to its present location. Installation of Work: The Architectural, Heating, Ventilating, Plumbing and Structural Steel drawings shall be examined before installing the work contem- plated in these specifications, and if any discrepancies occur between them and these specifications, making it impossible to install the work as shown, the same shall be reported to the Architect and written in- 161 structions obtained for changes made necessary to accommodate the work hereinafter specified. All changes in the work covered by the specifications made neces- sary by the neglect of the Contractor to report said discrepancies shall be made by and at its expense. Openings Through Walls and Floors: The Contractor shall provide all openings through walls and floors, either below or above ground, and all cutting and fitting made neces- sary by neglect to make such arrangements shall be done by it at its expense. Excavation : The Contractor shall do all the excavating necessary in the con- struction of the work included in these specifications and all sheathing and bracing with proper material, which may, in the opinion of the Architect, be necessary for the protection of the foundations or walls of the building, and shall keep all excavation free from water during the progress of the work. Removal of Earth: After all the underground work installed by the Contractor is in place he shall remove from the building all surplus earth resulting from his work, and shall dispose of the same at its expense. Foundations : Furnish all labor and material and do all work necessary to install the foundations required by the machinery herein specified. No foun- dations shall go below or come in contact with the building footings, and the Contractor shall furnish steel beams thoroughly protected by concrete and properly supported on piers to relieve building founda- tions of all vibration where foundations would otherwise rest on same. Foundations, excepting for machinery on framed floors, shall be of best cement concrete, extending at least four (4) inches above floor line, and .shall be neatly finished with faced brick above floor line. The Contractor shall provide the pumps and necessary power at its own cost and expense and keep excavation for foundations free from water during the installation of this work. 162 Painting: All exposed piping, ducts, iron work, etc., shall be painted, as directed by the Architect, two (2) coats of asphaltum paint or of lead and oil, final coat tinted as directed. All exposed covering shall be painted two (2) coats of lead and oil, final coat tinted as directed by the Architect. Finish coat on pipes and covering shall be tinted so as to identify the various services and shall be as directed by the Architect. Paint all machinery, after installation, two (2) coats of lead and oil, final coat tinted as directed by Architect. Test: All of the machinery herein specified shall be tested as specified or as directed by the Architect, and it shall perform all duties speci- fied in every respect; these tests shall be made in the presence of the Architect Laws and Ordinances — Inspection: The Contractor must comply with all the laws of the State of New York, the ordinances of the City of New York, N. Y., and the rules and regulations of the Board of Underwriters in the installation of the equipment included in these specifications ; anything in these specifica- tions to the contrary notwithstanding. All electrical work shall be installed in accordance with the rules and regulations of the Electrical Department of the City of New York, N. Y., and the Board of Underwriters, and certificates of inspection and approval obtained at the Contractor's expense. When Plumbing and Gas Fitting work herein specified is com- pleted the Contractor shall secure from the Sanitary Engineer of the Board of Health, or other proper official, and shall furnish free of cost to the owners, a certificate of inspection signed by the Sanitary Engineer certifying that all Plumbing work has been properly in- stalled. He shall also secure certificate signed by the Gas Company's In- spector stating that ajl gas piping has been made tight and accept- able. The Contractor shall state the make and kind of apparatus and material he proposes .to furnish for all parts of the work covered by these specifications, all of which shall be approved by the Architect. 163 PLUMBING, SEWERS, GAS FITTING, EJECTORS AND RE- FRIGERATING PLANT. PLUMBING, SEWERS AND GAS PITTING. In General i Furnish all labor and material to execute, install and complete the plumbing in accordance with the accompanying drawings and as required by these specifications. Scope of the Work: Furnish and install in a good, firm and substantial manner, all the drainage sewers and appurtenances, piping for hot and cold water supplies, waste and ventilation of waste and gas fitting, also plumbing fixtures and appurtenances, tanks, pumps, etc., as herein specified, making the system of water supply, use and waste and gas fitting com- plete and ready for service. Old Pipes in Curb Walls t Remove all sewer, water and gas pipes passing through curb walls, which will not be used in connection with the new work and close all openings in the proper manner. This work shall be done at such times as directed by the Architect and in accordance with the rules and reg- ulations covering the respective kinds of service. The Architectural drawings shall take precedence over the Plumb- ing diagrams, and if there is any difference in number or location of plumbing fixtures or gas outlets, the maximum number shown shall be installed under this contract, and all fixtures and outlets shall be con- nected complete. All risers are to be enclosed with tile or other material and in no case will the enclosure be made larger than is shown on the Plumb- ing and Architectural drawings. In every case suspended pipes must be kept as close to the ceiling as possible. Testing Material i All pipe, fittings, valves, etc., worked under a pressure of 100 pounds or less shall be tested to 250 pounds hydrostatic pressure and 164 those above 100 pounds to 500 pounds hydrostatic pressure per square inch at the factory. Quality of Materials: All piping and fittings shall be of the inside diameter designated. Soil and waste pipe in ground shall be extra heavy cast iron soil pipe in lengths of five (5) feet, smooth inside and with outer and inner surfaces concentric, sound, and free from defects and of iron that will cut well. The average weight of each pipe shall not be less than the following: 10 inch pipe 45 pounds per foot 8 inch pipe 33f pounds per foot 7 inch pipe 27 pounds per foot 6 inch pipe 20 pounds per foot 5 inch pipe 17 pounds per foot 4 inch pipe 13 pounds per foot 3 inch pipe 9| pounds per foot 2 inch pipe 5$ pounds per foot All pipe cracked in cutting or otherwise shall be at once removed from the building and shall not be used in any part of the work. Fittings for cast iron pipe shall be especially made for drainage purposes of the same inside diameter as the pipe with which they are to be used, and of equal quality and weight in all parts. These include elbows, bends, traps, Y branches, etc., and where shown shall have proper hand holes with cast iron covers. Fittings for junctions of cast iron and wrought pipe shall be cut at one end with full threads, and those supporting risers shall have proper shoes east on them. All suspended soil and waste pipes, downspouts, vent and cold water supply pipes shall be wrought pipe galvanized, of standard weights and dimensions, cut with full threads, and when used for soil, waste and vent pipes shall be cut to a gauge. No pipe lighter than full weight will be permitted. Pipe for hot water supply shall be of seamless brass, iron pipe si*?. Horizontal runs of soil and waste pipes and downspouts in the basement, pump discharge pipes and all water supply pipes in the basement, sub-basement and sub-sub-basement supplied from the high 165 level house tanks, also all piping for the fire protection shall be extra heavy. Fittings for soil and waste pipes shall be especially made for this purpose, of cast iron of the same internal diameter as the pipe, with which they are used, cut with full threads and to the same gauge as the pipe and shall be galvanized. Graded fittings shall have the grade cast on them. Fittings for vent and cold water pipes shall be galvanized, cut with full threads. All fittings 1-J- inches and less in diameter shall be of mallea- ble iron and all fittings 2 inches and larger in diameter shall be of cast iron. All changes in direction in water supply pipes around filters, surge tanks, pumps and in pump discharge pipes, 2 inches and larger in diameter, shall be sweep fittings. Fittings for hot water Bupply pipe shall be rough brass. Where pipes are extra heavy, fittings shall also be extra heavy. Fittings for gas pipe shall be malleable iron and beaded where possible to obtain same. All exposed pipes and fittings used in connection with plumbing fixtures shall be white metal, iron pipe size, and all faucets, exposed traps and trimmings of all kinds shall be white metal, unless other- wise specified under "Fixtures." Sheet lead for flashing shall weigh six (6) pounds per square foot. All brackets, clamps and hangers shall be of wrought iron and constructed to the satisfaction of the Architect. Drain tile shall be best hard burned. Brick shall be hard burned sewer brick, free from lime, and shall be thoroughly wet before laying. Cement shall be the best Portland. , Sand shall be clean, sharp and free from loam. Cement mortar for pipe laying shall be made of one (1) part ce- ment and one (1) part sand; for brick laying it shall be made of one (1) part cement and three (3) parts sand. For all mortar the parts shall be by measure and the cement and sand shall be first mixed dry and then wet with as little water as will make an easy working mortar. 166 Mortar shall be mixed fresh for the work in hand, and any mortar which shall have become hard in the box shall be thrown out and shall not be used in any part of the work. Lead shall be soft pig and gaskin shall be picked oakum. Excavation: A line shall be used to mark out the trenches for sewers, and there shall be no variation from the diagrams, except by order of the Archi- tect. All sewers in ground shall be laid in open trenches not less than two (2) feet wide in bottom. SEWBES. All horizontal runs of soil and waste pipes, whether in ground or suspended, shall have a grade of i-inch to the foot, unless otherwise ordered by the Architect. Sewer Connections: If a sewer of proper size is laid in curb wall near any of the points marked for sewer connections, the Contractor shall locate it, clean it out, and upon approval of the Architect shall connect thereto. If no such sewer is laid in the curb wall, connect with the street sewer and lay a sewer of the size shown on diagrams to a point six (6) feet outside the curb wall for each connection. Each pipe shall be laid true to line and shall be bedded in dry sand. Each joint shall be filled and properly caulked all around with cement mortar. The joints shall be cleaned off inside and struck smooth outside and mortar thrown on and struck off around pipe to the proper level. Dry sand shall be filled in and tamped solid to 6 inches above pipe. Above this the trenches shall be back filled as here- inafter specified. The connection of iron sewer to clay sewer shall be made with col- lar of brick laid in cement made of two rings of brick with not less than six (6) inches bearing on each side of joint. Cast Iron Pipes: All sewers in ground through and inside curb walls to a point six (6) feet outside of said walls shall be cast iron pipe laid truly to line 167 and grade. Any changes in line or grade shall be made with a proper curved fitting and all junctions shall be made with Y branches. Handhole fittings shall be used where shown, and where junctions of sewers occur, and one (1) handhole in main sewer at least every fifty (50) feet. Fittings receiving risers shall be set with top of fitting at surface of finished floor, and the fittings seated upon or firmly clamped to the adjacent wall or column. Each pipe shall be bedded its entire length in packed dry earth or sand with proper bell hole at each joint. The joints shall be tightly caulked with gaskin, leaving not less than 1£ inches depth of lead room. The inside shall be examined and if not smooth shall be made so. A clay or asbestos roll shall be used to make the joints and shall be put on so that after caulking the lead will finish flush with the bell. Each joint shall be run full of molten lead at one pouring, and if it does not fill perfectly shall be cut out and repoured; any lead that has run through to the inside shall be removed and the joint left smooth. The joint shall be properly caulked. No lead shall be cut until the caulking is carried all around the pipe; the lead shall then be trimmed and finished smooth with end of bell. All openings for connections shall be closed with plugs until tested, and all handholes shall be closed at once and the sewers shall be kept clean ; any dirt which may get in shall be removed. Back Filling: As fast as the pipe is laid dry earth shall be rammed into place at the sides of the pipe, leaving the joints and tops exposed until tested as hereinafter specified. After testing the trenches shall be filled in layers not more than nine (9) inches thick, each thoroughly rammed with an iron rammer. Testing: At such times as the Architect may direct stop all openings on the cast iron sewers, set up a standpipe twenty- five (25) feet long on each and fill same with water. If any leak shows in pipe or joint, it shall be made good and the test repeated, and the final certificate will not be issued until the work is made tight as contemplated herein. After this test the back filling shall be completed as hereinbefore specified. 168 Suspended Sewers: All suspended sewers shall be of wrought pipe, hung to the beams of the floor just above same, and the points of support shall not be more than twelve (12) feet apart, and there shall be at least one sup- port in each length. As regards grade and use of fittings : The joints and pipes shall be as specified for soil and waste pipes. Horizontal runs of sewers in basement shall be extra heavy. Ejector Fits: Furnish all material and do all excavating and set in place in sub-sub-basement floor two (2) ejector pits each nine feet in inside diameter constructed as shown on diagrams. Each pit shall be made of steel and must be water tight when completed and shall be sur- rounded with concrete as indicated. Pipes passing through walls of pit shall make water tight joints with same. Provide concrete floor in bottom of each pit. The ejector pits must be put in place as soon as building founda- tions are built and must be kept free from water until they are turned over to the Owner. Discharge Pipes from Ejectors: The discharge pipes from ejectors shall be extra heavy wrought pipe galvanized, connected to sewers in street as shown. Fittings used in discharge pipes shall be extra heavy sweep fittings. The ejectors will be furnished as specified under "Ejectobs." The inlet and outlet pipes of same will finish with flanges. Furnish flanged pipe connections on inlets and outlets of same diameter, and make connections to the ejectors inside of pits, making requisite holes in same. Make cross-connections between ejectors, properly valved. Surface Drains: 1 j| Surface drains shall be laid of the sizes and on the lines shown on diagrams, set in boxes. Boxes and trenches shall be filled to the bot- tom of the concrete floor with small broken stone. The bottom of the trenches shall be graded to the section shown with a regular grade between sections, and each box shall be set in a solid bed of sand its 169 entire length, with the projecting sides resting upon the projecting bottom of the preceding box. The broken stone shall finish evenly at the specified level and shall be covered with boards, secured to stakes driven on each side of trench. Maintain this protection until the laying of the concrete floor and make good and repair or replace, as may be necessary, any damage resulting from neglect to do this. Where drains pass under footings and foundations they shall be of cast iron pipe. Surface Basins: Build where shown, surface basins of brick laid in cement mortar with walls four inches thick, and one (1) course in bottom (flat). They shall finish inside nineteen (19) inches in diameter and four (4) inches deeper than outlet drain and shall be covered at floor level with fin- ished ring with deep collar and counter-sunk flush lid eighteen (18) inches clear inside diameter, set level and true. Rings and lids shall be of cast iron, except in the Safety Deposit Department and in the Engine Boom, where they shall be of brass. Settling Basin: Build, where shown, settling basin three (3) feet six (6) inches inside diameter at bottom and drawn in to nineteen (19) inches at top; cover with counter-sunk iron ring and flush lid eighteen (18) inches in diameter. The settling basin shall have two (2) flat courses in bottom and two (2) rings of bats in wall, plastered outside and cleaned and painted inside. Bottom of basin shall be two (2) feet below outlet Cleaning Surface Drainage System: The entire system of surface drainage shall be kept clean during the construction of the building and shall be delivered to the Owner absolutely free from stoppage. Manhole : Build, where shown, or where required, circular manhole not less than three (3) feet six (6) inches inside diameter at bottom and drawn in to 19 inches at top. Cover with counter-sunk iron ring and flush lid 18 inches in diameter. The manhole shall have two flat courses 170 in bottom and two rings of bats in wall, plastered outside and cleaned and painted inside. Gutter Drain in Front of Boilers: Furnisb and install where shown in front of boilers graded gutter and cover, which shall be coated inside and outside while hot with coal tar varnish and set in a cement grout. Do all cutting and repairing required by the installation of this gutter. Catch Basin: Build, where shown, a brick catch basin of cement and hard burned sewer brick. Basin shall be three (3) feet six (6) inches in diameter at the bottom and three (3) feet below outlet with three (3) courses of hard burned brick and eight (8) inches of cement concrete in bottom and two (2) rings in wall. Outside shall be plastered \ inch thick with cement plaster and inside the same to sewer outlet. Basin shall be drawn in to nineteen (19) inches at top and covered with a counter- sunk iron ring and flush lid eighteen (18) inches in diameter, set flush with the floor. PLUMBING. System : The system of plumbing shall furnish hot and cold water to points indicated on diagrams. Joints: Joints in and to wrought pipe and fittings shall be made with threads fully coated with white lead and oil and properly screwed home. Carpentry: All carpentry work necessary for supports, etc., in setting the fixtures included in these specifications will be done as specified under "Carpentry and Cabinet Work." WASTE WATER SYSTEM. Risers and Branches: All risers and branches for soil, waste and down-spouts shall be connected to sewers. Connect bottom of each vent pipe to nearest soil 171 or waste pipe. All connections through which water is to run shall be made with Ys, unless otherwise indicated on detail drawings, and these Ys and the elbows used from vertical to horizontal runs, or to re- ceive water closets, shall be cut to the proper grade of horizontal pipe. All risers shall be securely clamped at floors to beams or walls and at any deflection from the vertical a firm support by bracket or hanger shall be given the riser in its new position. Branches for water closets shall be firmly supported to beams where necessary. Branches for ventilation of traps shall be run as directed, and all openings shall be left above outlet of fixture at such height as to give continuous rise from the connection to waste pipe. Where a branch vent crosses a room, corridor or doorway on any floor, it shall be run in the floor above and dropped through to the fixture. In all cases of waste or vent pipes the iron used shall come through the floor or plaster line only, leaving the opening at the finished floor or plaster line ready for connection. Handholes: Handholes of same diameter as pipes shall be put in on every branch in floor at the connection to riser and on each riser at its con- nection to sewer, and each branch shall have one or more handholes as may be necessary. All openings shall be closed with screw plugs with plumbago. All parts of this work shall be made accessible so that it may be readily cleaned out. Screw plugs, except on exposed suspended sewers, shall be of white metal, set flush with the finished floor, those on exposed suspended sewers shall be rough brass. Downspouts: Set downspouts of wrought pipe as hereinbefore specified for waste risers. Traps: In all cases where trap is not in combination with fixture, it shall be as specified under "Fixtures," or as shown on diagrams. Each fixture shall be fitted with a trap set in all cases as close to the outlet as practicable. 172 Extra Plugged Openings: In each story where fixtures occur install in branch to each riser the following fittings, located where directed, in addition to all con- nections that are necessary for fixtures shown : On each water supply a plugged tee full size of branch. On each vent a plugged tee full size of branch. On each waste or soil a graded fitting full size of branch, properly stopped off. On all risers having connections to plumbing fixtures, install in all stories, fittings for branch connections full size of risers for waste or soil, vent and hot and cold water supply. All extra openings shall be located as directed. Ys shall be used on all waste and soil risers in all cases. Flashing: Ml pipes passing through the roof shall be flashed at the roof fine with a piece of sheet lead not less than eight (8) inches in all direc- tions from pipe and a piece of lead soil pipe ^ inch thick, running from sheet lead to top of pipe and turned down inside of pipe one (1) inch. The sheet lead and pipe shall be joined with a wiped joint. WATEE SUPPLY. Connect to city mains in Broadway and Cedar, Nassau and Pine streets, and lay in cast iron pipes to meters of the sizes shown. From* the meters the pipe shall be continued to the filters with all connections properly valved. Meters: There shall be four meters located where shown or where directed by the Water Department of the City of New York, N. Y. Meters shall be set on the floor, unless otherwise indicated on the diagrams and connected with a fish strainer on each connection from main, all of a make approved by the Water Department of the City of New York, N. Y., and provided with a gate valve on each side of each meter. Meters shall have flanged connections. 173 Provide plugged fittings on each side of each meter for the insertion of test meter. Rules : All work in connection with the water mains and meters and loca- tion of same must be done in accordance with the rules of the Water Department, by and at the expense of the Contractor, who shall also provide the meters. Surge Tanks: Furnish, set up and connect where shown two (2) open surge tanks each of 5,000 gallons capacity ; one tank shall be used for building serv- ice and one for fire pump service. Tanks shall be made of f inch thick steel, water tight, and shall be provided with necessary flanges for suction to house pumps or fire pumps, overflow to sewer with running trap and draw off at bottom. Provide valve on each connection, except overflow. Surge tanks shall be covered as hereinafter specified. Provide each tank with a heavy sheet steel cover, having manhole and cover. Each tank shall be provided with a flange steel drip pan \ inch thick and one (1) foot larger in diameter than the tank and four (4) inches deep, riveted perfectly tight. Surge tanks shall be set on concrete foundations four (4) inches above floor. Make all connections between filters and surge tank for house service also by-pass around surge tank. Provide two (2) ball floats in each surge tank, floats to be arranged to operate at different levels. The levels at which floats operate will be determined later. Filters: Furnish, set up and connect at location shown five (5) pressure filters, each having a capacity to filter ten thousand (10,000) gallons of water per hour taken from mains, based on a maximum rate of fil- tration not exceeding four (4) gallons of water per square foot of filter area per minute, and at the end of eight (8) hours run the filtrate must be clear and not contain any free alum or other coagulent at any time. 174 Provide all necessary flanged openings for inlet and outlet and washout to sewer- Filters shall be fully equipped for operating and shall be set on a concrete foundation four (4) inches above floor. Filters shall be covered as hereinafter specified. Filter Connections: Filters shall be arranged and so connected that they can be used singly or together as desired; also provided with a by-pass around each filter. Each connection shall be properly valved. Install on supply from filters a cross-head as shown on diagrams arranged for independent connection for each supply. Also install on this cross-head four (4) extra valved connections of the sizes directed. Each branch from the cross-head shall be fitted with a valve and with a brass plate plainly marked with the destination of the supply. Each supply delivering water above the filters shall be fitted with a lever handled drain cock connected with a £ inch pipe to nearest sewer, and each supply delivering below the level of the filters shall be fitted with an air cock. House Tanks: Furnish, set in place where shown, and connect six (6) house tanks, made of flanged steel ; sides and bottoms shall be § inch thick, riveted perfectly tight; tops shall be reinforced with 2|x2^-inch angle irons; locations and capacities of tanks shall be as follows : Two (2) of 12,500 gallons each in the 38th story. Two (2) of 5,000 gallons each in the 26th story. Two (2) of 5,000 gallons each in the 16th story. The capacities noted above shall be effective capacities between equalizers and overflows. On each of these tanks shall be riveted perfectly tight pipe flanges of proper size for overflow, equalizing purposes and draw-off; center of overflow pipe shall be six (6) inches from top of tank. The high level house tanks shall be arranged to supply both the interior stand- pipes and plumbing fixtures above the 26th floor; the supply for the standpipes shall be taken from an equalizer, placed between house tanks and taking water from points near the bottom of the tanks. The 175 supply for plumbing fixtures shall be taken from an equalizer, placed between house tanks at such a height that there will always be a total of 10,000 gallons reserve in the two tanks for fire purposes. Overflow from the high level house tanks shall be to the inter- mediate level house tanks, and overflow from the intermediate level house tanks shall be to the low level house tanks; overflow from the low level house tanks shall be to surge tank in sub-sub-basement. Each pair of tanks shall be provided with a flanged steel drip pan £ inch thick, rectangular in shape and of such size that it will receive the two tanks. It shall be four (4) inches deep, riveted perfectly tight and located on supports. All tanks shall be painted two (2) coats of red lead before assem- bling; after assembling they shall be painted two (2) coats asphaltum inside and outside, one coat in the shop and one coat after installation. Provide each tank with heavy sheet steel cover having a manhole and cover. Make valved connections from house tanks to main sup- plies, each fitted with a valve and air cock at point of connection; in- stall on supplies to risers two (2) plugged "Ts" at points directed by Architect and provide valve on equalizer connection at each house tank. Telltale Pipe: Run telltale pipe from each pair of house tanks to a convenient place in the boiler room to sound an alarm to warn the attendant in case of failure of the ball floats to operate properly. Hot Water Connections: The hot water heaters will be set in the sub-sub-basement as speci- fied under "Steam Fitting, Steam Heating and Ventilating." Arrangements shall be made so that two (2) heaters can be used to supply the plumbing fixtures above the 26th story; two (2) heaters to supply the plumbing fixtures from the 16th to the 25th stories in- clusive; two (2) heaters to supply the plumbing fixtures between the 2d and 15th stories inclusive, and two (2) heaters to supply the plumb- ing fixtures in the sub-sub-basement, sub-basement, basement and 1st story. Connect the main supplies from each pair of house tanks in the various stories to supply the hot water heaters for its respective sys- 176 tern. Supply pipes shall each be fitted with an air cock at top and drain pipe with valve at the bottom, discharging into nearest sewer. Install on heaters cross heads with valved connections to heaters and take off main supply connections, each fitted with brass valve and with a lever handled drain cock and connected to nearest sewer. Provide two (2) extra plugged openings on each cross head. The heaters shall also be connected with drain pipe with valve ; each branch from cross head shall be fitted with a brass plate, plainly marked with the destination of the supply; proper connections shall be made be- tween heaters complete with valves so that any one heater or any combination of heaters may be used in any service while other heaters are in use on other services. Risers : All risers shall be located as shown and securely clamped to the walls or beams at floors. Each riser shall be provided at the bottom with a proper drain valve. Each hot water pipe shall be made with offsets or otherwise arranged in a satisfactory manner, so that expan- sion at fixture will not exceed | inch. Cold water risers shall be connected together at the bottom of each system and carried to some convenient point for draining. Provide air chamber at top of all risers of as great length as possible. At the bottom of each descending hot water riser shall be set a loosely swinging approved brass angle check valve standing open when no water is being drawn from riser; also globe valve. Furnish and securely attach at bottom and top of each hot and cold water riser brass plate, plainly marked in such a manner as to identify the riser. Marking of these plates shall be submitted to the Architect for approval. Branches : Branches shall be run in the manner before specified for wastes and vents. All branches run to a succession of fixtures shall be pro- vided with a shut-off valve at connection to riser located conveniently. All hot water pipes shall be arranged so as to allow for expansion. 177 Connections and Trimmings: All exposed supply pipe and connections and trimmings of all kinds, including faucets, etc., for all plumbing fixtures throughout the building shall be of white metal ; pipe under pressure shall be iron pipe size seamless white metal capable of withstanding a pressure of two hundred (200) pounds per square inch. Each connection to cock or bibb shall be provided with an air chamber twelve (12) inches long, concealed in wall, where possible, and approved key stop set conveniently. Special Snpply Piping: Make connection to cross-head at filters and run supply pipe for boiler feed, terminating at a point near the feed water heaters; con- nection will be made to this point as specified under "Steam Fitting, Steam Heating and Ventilating," and supply run to the boilers and feed water heaters. Also make connection and run supplies from the cross head to the elevator tank, air compressors and refrigerating plant, terminating same at points approved by the Architect. Also make connection to cross head between meters and filters and run piping to a point inside of each compartment of the coal storage bin, terminating with hose connection located where approved by the Archi- tect. The above connections shall be properly valved. Make valved connection between supply to hot water heaters from high level house tanks to supply boilers in emergency. Run all supply piping necessary for the kitchen service, bars and club. The fixtures in these rooms will be furnished and installed by the Owner, and piping shall be brought to the rooms, capped and left ready for future connections. Install a sprinkler system in waste paper room in sub-basement complete with all heads, piping, etc., that may be required to sprinkle all portions of the room and connected to cold water supply to hot water heaters from the low level house tanks. Sprinklers shall be automatic in operation and the system shall be complete with all equipment. Provide sprinkler system in refrigerating room, same to be com- plete with all piping, sprinkler heads and other equipment, and con- 178 nected to cold water supply to hot water heaters from low level house tanks. Heads in this room are to be open and water is to be admitted to the system by opening a valve placed outside of the room. Also provide sprinkler system in paint shop and in all other rooms in which inflammable materials are stored and in kitchens, boiler room, engine room and pump room. These systems shall be automatic in operation and shall be com- plete with equipment. Supplies and Wastes in General: All branches to horizontal pipes shall be laid to drain. All risers shall be so set as to be conveniently encased. Sill Cocks: Set and connect, where shown, polished brass sill cocks with loose keys and furnish a key with each sill cock. They shall be firmly caulked in place. On each connection to sill cock provide a hand valve and drain stop. Where so indicated on diagrams they shall be installed in con- nection with the Siamese connections and shall be of the design shown on the drawings. Testing: All supply pipe shall be stopped off at outlet and filled with cold water at normal pressure. The sewers shall be stopped off at curb walls. All openings on sewers, wastes, soils and vents shall be plugged and the entire system filled with water to roof. All of the foregoing shall be carefully examined and if any are found to leak they shall be made tight and the test repeated. These tests shall be made in the presence of the Architect, and the Contractor will not be entitled to either final certificate or payment until work is made tight as contemplated herein. If required by the Inspector of Plumbing, an air, smoke or peppermint test shall be made, by and at the expense of the Contractor. Interior Standpipes: Furnish, set up and run from the sub-sub-basement ceiling to the 38th story, where shown, standpipes of extra heavy wrought pipe, gal- vanized. There shall be one (1) standpipe in each main stair of the 179 size required by the City Fire Department. All of the above shall be complete with fittings and valves and shall be securely fastened to beams or walls. The main risers shall be connected together in the 34th intermediate story and joined to the standpipe equalizer at the high level house tanks. All risers shall be connected at the sub-sub- basement ceiling and to fire pumps and Siamese steamer connections located where shown on drawings. Provide brass fitted swinging check valve at connection to equalizer, to each Siamese connection and to each fire pump. Mains connecting standpipe risers in the 34th inter- mediate story shall be of standard wrought pipe galvanized. All fit- tings throughout shall be long turn fittings. All pipe, fittings and valves used in this connection shall he extra heavy and fittings shall be flanged fittings where required by the Board of Underwriters. Pro- vide an automatic brass or bronze drip ball connection hetween each Siamese coupling and check valve. Gate valve at connection to equal- izer shall be of the outside stem and yoke type and built in accordance with the specifications of the National Board of Underwriters. Pro- vide pressure regulators on each standpipe in height of building com- plete with by-passes and valves; number shall be approved by the City Fire Department. Run 24-inch connections from standpipes to the hose racks, there being four (4) connections in each story from the second to the thirty- sixth inclusive, and two (2) connections in thirty-seventh and thirty- eighth stories. Provide the following additional 2J-inch hose connec- tions located where shown on diagrams or where approved by the Architect: Sub-Sub-Basement 2 Sub-Basement 4 Basement 6 Plugged openings only shall be provided in the first story. Pro- vide at each connection a drain not less than | inch in diameter with shut-off cock. Drains shall be connected and run to sub-sub-basement with discharge to sink in boiler room. Provide 4-inch valved drip con- nection at bottom of each standpipe to nearest sewer. Provide specially designed polished brass Siamese connections at wall located where shown, and connected to main. These Siamese con- nections shall be of the general design shown on drawings and shall be of the size and type required by the City Fire Department. 180 Racks and Hose : Furnish, set up and connect at each hose connection throughout the building an approved nickel-plated brass swinging hose rack ar- ranged so that hose will hang in vertical lengths, complete with 2^-inch unlined linen fire hose bearing the label of the Underwriters' Labora- tories and provided with one nickel-plated brass one (1) inch smooth bore play pipe not less than twelve (12) inches long, weighing not less than three (3) pounds. Nozzle shall be provided with spanner lugs. Hose on each rack shall be of sufficient length to reach any por- tion of the building served from its respective standpipe or connec- tion and shall be in 25 and 50 foot lengths, but in no case will more than one 25 foot length be allowed for a rack. Hose lengths shall be figured to reach the farthest point of the building and to meet each other. Couplings shall be Underwriters' Coupling, of nickel- plated brass. Each hose connection shall be provided with a 2^-inch gate valve constructed in accordance with the specifications of the National Board of Underwriters, except that 6-inch handwheels shall be provided. Valves shall be of nickel-plated brass. All apparatus in connection with the fire protection equipment Bhall be of a make and type approved by the Underwriters and the Fire Department of the City of New York, N. T., and all work shall be installed to meet their requirements. Obtain the written approval of the Board of Underwriters and the City Fire Department on all portions of this work. FIXTtTRES. Cuts of all fixtures hereinafter specified shall be submitted to the Architect to enable him to make selection of same. Fixtures shall be set up and connected complete to soil or waste vent and water supplies. Setting: The fixtures included in these specifications shall be set and con- nections made thereto in a neat, finished and uniform manner, making the connections to all fixtures of each class of equal height and plumb or at right angles to the wall, unless otherwise directed by the Archi- tect. 181 Water Closets: All water closets shall be of the siphon jet pattern, with concealed siphon limb, of such diameter as to permit the passage of a 2^-inch hard rubber ball. Bowl shall be of a vitreous body throughout and shall weigh not less than fifty (50) pounds, without seat. It shall maintain a water seal of not less than 3 inches in depth and an area at top of water line which shall not be less than 8x10 inches. Closets shall be of the floor type and shall be set on heavy cast brass floor flanges not less than I inch in thickness with joints packed with solid asbestos roll with lead mixture and covered with plumbago treatment. Bowls shall be fastened to flanges with white metal bolts having blank white metal heads. Connection to soil pipe shall be made through threaded connections. Tanks where concealed shall be plain wood tanks concealed behind marble and supported on angle iron or gas pipe frame. Tanks shall be lined with 16 oz. tinned and planished copper and provided with link rod operated by a push button or lever as approved by the Architect, and set to discharge at least five gallons at each flush. Tank shall be connected to bowl with 1^-inch rough brass flush pipe. Tanks where exposed shall be cabinet finished hardwood copper lined tanks set on white metal brackets with chain and pull; flush pipe shall be white metal. ■■■'■■■ ; Each connection of water supply tank shall be fitted with a gate valve set conveniently. Supply pipes shall be concealed where pos- sible. Each water closet shall be provided with seat without cover; seat in each case shall match the woodwork of the room. The water supply to each battery of water closets shall also be provided with a gate valve to shut off the supply to all fixtures in the battery. Urinals : Urinals shall be vitreous lipped urinals, having integral inlets and outlets and shall be placed in stalls furnished and set in place as specified under "Marble and Tile Work." All tanks shall be automatic flushing; where they are concealed 182 behind marble they shall be plain wood tanks set up on frames similar to water closet tanks. Where exposed, they shall be cabinet finished hardwood tanks finished to match the woodwork in the room and set on white metal brackets. They shall be of capacity to provide a flush of two (2) gallons per urinal. The water supply shall be conneqted to concealed pipe with nickel- plated brass key stop set conveniently. Lavatories: Lavatories shall be of vitreous china. In offices they shall have integral backs and return ends and single legs of china; they shall not be less than 20x24 inches overall dimen- sions. In toilet rooms and bath room they shall be roll rim lavatories not less than 20x24 inches over all dimensions and shall have single legs of china. Where in batteries they shall be installed with 3-inch space between end lavatory and wall and at least 2-inch space between lava- tories. Lavatories shall have splash rims and shall be provided with ad- justable wall supports. Each lavatory, except in the Engineers' and Firemen's Toilet Rooms, shall be provided with two self-closing faucets connected to hot and cold water supplies in wall. Faucets shall close with the pres- sure. Faucets for the lavatory in the Engineers' and Firemen's Toilet Rooms shall be compression faucets. Each connection shall be pro- vided with an air chamber concealed in wall and a loose key stop. Pro- vide each lavatory with a pop-up waste outside of the overflow or sim- ilar waste approved by the Architect, and hooded overflow. Outlet shall be connected to "P" trap with waste to wall and vent continued from waste pipe. All faucets shall be provided with hot and cold water indicators. Provide soap dish for each lavatory integral with the lavatory. All metal in connection with lavatories shall be white metal. Slop Sinks: Slop sinks shall be of enameled iron 20x24 inches. Each sink shall be provided with one (1) combination hot and cold water compression 183 faucet connected to hot and cold water supplies with air chambers and loose key stops and shall be equipped with white metal dome type strainer with small holes and white metal protecting rim. Faucet shall be provided with brace, and shall be strong enough and arranged to hold a pail. Sinks shall have "P v trap standards, enameled inside and out- side and connected to waste with three (3) inch screw thread Dur- ham flange. Shower Baths: Shower baths in Mechanical Plant shall be head showers with six (6) inch removable faces connected to hot and cold water sup- plies. They shall be provided with combination cast iron drum traps with seven (7) inch white metal outlet grates and three (3) inch waste connection and anti-scalding valves. All metal work shall be of white metal. Install check valves on water supplies. Bath Tub: Provide in bath room in 34th intermediate story a five-foot six- inch enameled iron roll rim tub, provided with chain and plug and combination faucet for hot and cold water supplies, also combination waste and overflow. Provide drum trap. All trimmings shall be white metal. Sink in Boiler Room: Sink in Boiler Room shall be enameled iron, 20x36 inches, with in- tegral back. Sink shall be enameled inside and outside, supported on cast iron legs painted white. Sink shall be provided with compression faucets for hot and cold water, also plug and chain and "P" trap, all of white metal. Earthenware : Earthenware for all plumbing fixtures shall be of china and guar- anteed not to craze. Floor Drains: Furnish, set in floor and connect to sewer at locations shown throughout the building extra heavy cast iron combination floor drains and deep seal running traps with water supply. 184 Top of floor drains shall have brass strainer set flush with the floor. Shields: All exposed pipes passing through floors or walls shall be pro- vided with shields of same material as pipes and neatly fastened to same. Covering: All hot water pipes, except branches in floors, shall be covered with two (2) layers of wool felt covering, each | inch thick, lap jointed with insulating paper next to the pipes, properly protected from water with a water-proof paint. All exposed cold water pipes shall be covered in a similar man- ner, except that wool felt covering on piping 2| inches and less in diameter shall be \ inch thick, and on all piping 3 inches and larger in diameter shall be 1 inch thick, put on in two (2) layers, similar to cov- ering for hot water pipes. Filters and surge tanks shall be covered with hair felt covering one (1) inch thick lap jointed with insulating paper, properly pro- tected with a waterproof coating. These shall be covered with eight (8) ounce canvas and treated with two (2) coats of waterproof paint. All the above shall be covered with eight (8) ounce canvas and painted as directed by the Architect. Cover all exposed down spouts, including vertical runs, soil and waste pipes similar to cold water pipes, except that covering on all downspouts shall be \ inch thick. All covering shall be neatly and thoroughly applied, special care being taken with the fittings and joints. All exposed covering on piping in the Sub-sub-basement, Sub- basement, and 38th story shall be supplied with bright lacquered bands, put on every eighteen (18) inches, and with similar band on each side of each fitting. The Contractor shall guarantee that there will be no condensation on the outside of covernig and that no moisture will appear at any time in any part of same. If, in the opinion of the Contractor, the covering as above specified 185 will not comply in every respect with the intent of the specifications and prove satisfactory, he shall confer with the Architect and obtain instructions as to changes necessary. Steam ends of all pumps shall be covered with 85 per cent, mag- nesia blocks with Russia iron jackets and spun brass heads. Latrines: Furnish, set up and connect latrines in temparary water closet enclosures to be erected as specified under "Foundations and Ma- sonry." In connection with the latrine in all stories excepting base- ment, install wooden house tank and electrically driven house pumps of sufficient number and capacity per hour to provide all water neces- sary for latrines. Install two (2) inch discharge to house tanks. House tanks shall be complete with overflow and drawoff ; drawoffs shall be valved. Provide motors for house pumps. Connect latrines to sewer with six (6) inch pipe. Make all con- nections of whatever nature that may be required to install pumps, motors, house tanks and latrines. Pumps shall be automatic in action. Piping shall be boxed and packed in sawdust and all piping and tanks shall be protected against freezing. These latrines shall be kept free from stoppage during construc- tion of the building and shall be disconnected and removed from the premises when directed by the Architect. Latrines shall be located where directed by the Architect, and shall be moved as often as required. House Pumps: Furnish and install on foundations where shown steam driven du- plex outside packed bronze plunger pumps, of a make approved by the Architect; capacity of each pump shall be not less than the following: two (2) pumps delivering to high level house tanks, 15,000 U. S. gal- lons each per hour; two (2) pumps delivering to intermediate level house tanks, 10,000 U. S. gallons per hour; two (2) pumps delivering to low level house tanks, 10,000 U. S. gallons per hour. Piston speed of each pump shall be not more than 35 feet per minute when pumping the amount of water specified. Make all steam supply and exhaust connections to pumps from 186 piping installed as specified under ' ' Steam Fitting, Steam Heating and Ventilating. ' ' Install inside of delivery gate valve a safety valve for each pump. Install in discharges from each pair of house pumps a 200-gallon cushion tank. Provide to each cushion tank air connection to high pressure com- pressed air tank; all connections shall be properly valved. Provide water glass on each cushion tank, also on pressure air chamber on each house pump, all with self-closing gauge cocks and all necessary tank trimmings. Pump shall be arranged for automatic operation and shall be com- plete with all connections and equipment. Provide sniffing valve on suction of each pump. Fire Pumps: Furnish and install where shown two (2) steam driven fire pumps of the Underwriters '■ Pattern and each having a capacity of 1,000 gal- lons per minute delivering against 50 pounds at the highest outlet. Pumps shall be automatic in action and with all equipment must meet with the approval of the Board of Underwriters and the City Fire Department. Make all connections to surge tank for fire pumps, also to mains between standpipes. Valves : All valves shall be of the gate pattern. All valves two (2) inches and less in diameter shall be of brass; all valves above two (2) inches in diameter shall have iron bodies and brass working parts, except where brass valves are specifically mentioned. All valves shall be supplied with hand wheels with arrow indicating "Open", and to each shall be attached a brass tag indicating its use. GAS FITTING. Connections : The Contractor shall pay the cost of bringing in connections from mains to meters. Provide automatic shut-off on each service of a make and type approved by the Board of Underwriters of the City of New York, N. Y. 187 Rules: All gas fitting in connection with this building shall be done un- der the rules of the company furnishing the gas to the building. Working Plans: Working drawings shall be submitted by the Contractor which will show all lines of gas piping, together with the risers, runs to me- ters, and outlets. Outlets: All outlets shown shall be piped for gas. Piping: Connect to meters and run all piping carrying up main risers and branches on each floor, setting a cock at each branch from main riser. A cock shall be set on each side of each meter. Each pipe shall be firmly secured in place. Care must be taken that no pipe shall be trapped and all runs in floors shall be bedded so that they do not give or spring under tread. The sizes of this piping shall be governed by the rules of the gas company furnishing the gas. Tested pipe shall be furnished as required while partitions are being set. Each separate supply pipe shall be tested with an air pump and if any leak is found it shall not be cemented or caulked, but the pipe taken out and made over. After the piping is installed and made tight, it shall be coated with asphaltum. Gas for Fuel: Run mains, branches and risers to supply ranges and othor gas appliances in kitchens in the basement and in the club in 36th story. Sizes shall be as required for the services. Number of Fixtures: The number of each kind of fixtures as shown on diagrams is not absolute. 188 Unit Prices: Name one price only for any additions to or deductions from this contract for the respective fixtures and materials named below; said price to obtain until the completion and acceptance by the Architects of all work called for herein. Water closets of the floor type, furnished, set up and connected, complete, to concealed pipes, each $. ., Urinals, furnished, set up and connected complete to concealed pipes, each $ 1. . ... Lavatories, china, furnished, set up and connected, com- plete, to concealed pipes, each $........ Slop sinks, furnished, set up and connected to concealed pipes, each ,. . ., , , ,... ... . $. .,. .,. .1. . Shower baths furnished, set up and connected to con- cealed pipes, each $ 12" suspended waste pipe, installed, including fittings, per foot $ 10" suspended waste pipe, installed, including fittings, per foot $ 8" suspended waste pipe, installed, including fittings, per foot $ 6" suspended waste pipe, installed, including fittings, per foot $ 1.. 5" suspended waste pipe, installed, including fittings, per foot $ 4" in suspended waste pipe, installed, including fittings, per foot $ 1. . 2\" suspended waste pipe, installed, including fittings, per foot $ ,. . 2" suspended waste pipe, installed, including fittings, per foot $ 1£" suspended waste pipe, installed, including fittings, per foot $ 12" suspended waste pipe, installed, including fittings and covering, per foot $ 10" suspended waste pipe, installed, including fittings, and covering, per foot $ 8" suspended waste pipe, installed, including fittings and covering, per foot $ 6" suspended waste pipe, installed, including fittings and covering, per foot $ y suspended waste pipe, installed, including fittings and covering, per foot $ 189 4" suspended waste pipe, installed, including fittings and covering, per foot $ 3" suspended waste pipe, installed, including fittings and covering, per foot $ 24" suspended waste pipe, installed, including fittings and covering, per foot $ 2" suspended waste pipe, installed, including fittings and covering, per foot $ 1|" suspended waste pipe, installed, including fittings and covering, per foot , — $ 10" vent pipe, installed, including fittings, per foot $ 8" vent pipe, installed, including fittings, per foot $ 6" vent pipe, installed, including fittings, per foot. ... $ 4" vent pipe, installed, including fittings, per foot $ 3" vent pipe, installed, including fittings, per foot $ 1\" vent pipe, installed, including fittings, per foot $ 2" vent pipe, installed, including fittings, per foot. ... % \\" vent pie, installed, including fittings, per foot. ... % 8" cold water piping, installed, including fittings, per foot $ 6" cold water piping, installed, including fittings, per foot % 5" cold water piping, installed, including fittings, per foot % 4" cold water piping, installed, including fittings, per foot $ 3" cold water piping, installed, including fittings, per foot % 1\ cold water piping, installed, including fittings, per foot $ 2" cold water pipinc, installed, including fittings, per foot $ W cold water piping, installed, including fittings, per foot • $ \\" cold water piping, installed, including fittings, per foot % V cold water piping, installed, including fittings, per foot $ 190 J" cold water piping, installed, including fittings, per foot $. \" cold water piping, installed, including fittings, per foot $. 8" cold water piping, installed, including fittings and covering, per foot $. G" cold water piping, installed, including fittings and covering, per foot $ . 5" cold water piping, installed, including fittings and covering, per foot $. 4" cold water piping, installed, including fittings and covering, per foot $ . 3" cold water piping, installed, including fittings and covering, per foot $. IV' cold water piping, installed, including fittings and covering, per foot $. 2" cold water piping, installed, including fittings and covering, per foot $ . IV cold water piping, installed, including fittings and covering, per foot $. 1\" cold water piping, installed, including fittings and covering, per foot $. 1" cold water piping, installed, including fittings and covering, per foot $ . f" cold water piping, installed, including fittings and covering, per foot $. \" cold water piping, installed, including fittings and covering, per foot $. 5" hot water piping, installed, including fittings and covering, per foot $. 4" hot water piping, installed, including fittings and covering, per foot $. 3" hot water piping, installed, including fittings and covering, per foot $. 2J" hot water piping, installed, including fittings and covering, per foot $. 2" hot water piping, installed, including fittings and covering, per foot . $. IV hot water piping, installed, including fittings and covering, per foot $. 1\" hot water piping, installed, including fittings and covering, per foot $. 1" hot water piping, installed, including fittings and covering, per foot $. 191 |" hot water piping, installed, including fittings and covering, per foot $ \" hot water piping, installed, including fittings and covering, per foot $ 10" cast iron sewer in ground, installed, complete, in- dueling fitting, excavating, back filling and re- moval of earth, per foot $ 8" cast iron sewer in ground, installed, complete, in- cluding fitting, excavating, back filling and re- moval of earth, per foot $ 6" cast iron sewer in ground, installed, complete, in- cluding fitting, excavating, back filling and re- moval of earth, per foot i $ 5" cast iron sewer in ground, installed, complete, in- cluding fitting, excavating, back filling and re- moval of earth, per foot $........ 4" cast iron sewer in ground, installed, complete, in- cluding fitting, excavating, back filling and re- moval of earth, per foot $ 3" cast iron sewer in ground, installed, complete, in- cluding fitting, excavating, back filling and re- moval of earth, per foot $ 2" cast iron pipe in ground, installed, complete, in- cluding fitting, excavating, back filling and re- moval of earth, per foot $....,. . . 4" drain tile, installed, complete, including excavating, back filling, crushed stone and removal of earth, per foot .. . $........ 6" drain tile, installed, complete, including excavating, back filling, crushed stone and removal of earth, per foot $. ., Roughing in for water closets, per lineal foot, includ- ing soil, vent and water supply $. . Roughing in for urinals, per lineal foot, including waste, vent and water supply. $ Roughing in for lavoratories, per lineal foot, including waste, vent and water supply $ Roughing in for slop sinks, per lineal foot, including waste, vent and water supply. $ Roughing in for shower baths, per lineal foot, including waste, vent and water supply. $ 4" gas pipe, including fittings, installed, per lineal foot $ 3" gas pipe, including fittings, installed, per lineal foot $ 192 2\" gas pipe, including fittings, installed, per lineal foot $. 2" gas pipe, including fittings, installed, per lineal foot $. \\" gas pipe, including fittings, installed, per lineal foot $. 1" gas pipe, including fittings, installed, per lineal foot $. |" gas pipe, including fittings, installed, per lineal foot $. \" gas pipe, including fittings, installed, per lineal foot $. |" gas pipe, including fittings, installed, per lineal foot $. Excavation, per cubic yard $. Removal of earth, per cubic yard $. Crushed stone, installed, per cubic yard ,. . . $. EJECTOES. Scope of The Work: Furnish and install the ejectors, air compressors, motors, con- trollers, receivers, and all appurtenances and equipment necessary to make the ejector plant complete and ready for service. Description of Plant: The plant shall consist of two (2) air compressors, two (2) air receivers and four (4) ejectors, located where shown. The pits will be built as specified under "Plumbing, Sewers and Gas Fitting" and each pit will be nine (9) feet internal diameter; tho bottoms will finish 3 feet 7 inches below the invert of inlet sewers. The sewage to be ejected will be ordinary waste, such as drainage from plumbing fixtures and surface or floor water. Ejectors: Furnish four (4) hydro-pneumatic ejectors and erect two (2) on the floor of each pit. Provide inlet and outlet flanges, to which the inlet and discharge pipes will be connected through flange connections as specified under "Plumbing, Sewers and Gas Fitting." The capacity of each ejector shall be one hundred (100) U. S. gal. Ions per minute. 193 Air Compressors: Furnish, set up on foundations and connect two (2) compound crank and fly-wheel compressors, steam driven, and automatic in action. Capacity of each compressor shall be two hundred (200) cubic feet of free air per minute compressed to seventy-five (75) pounds, gauge. Compressors shall be water jacketed and shall be complete with all necessary piping from water jackets so arranged that all cooling water can be delivered into the sewer or surge tank, as desired, with all neces- sary valves and connections. Normal speed of air compressors shall not exceed one hundred (100) R. P. M. Air Receivers: Where shown or directed, set two (2) compressed air receivers, each not less than four feet in diameter and five feet high, built of flanged steel and tested to withstand a working pressure of 150 pounds per square inch. Eeceivers shall be connected together by header on which shall be provided the necessary openings of proper size for ejectors, tem- perature regulation system, compressed air cleaning system, barber shop, and for supply to air compressors installed as specified under "Elevators." These openings shall be of the size required for the various services and all connections shall be valved. Also provide on header two additional plugged connections of sizes approved by the Architect. Connecting Pipes: Connect air compressors to the receivers, receivers to the ejectors and ejectors to ventilating shaft, and make all water and waste con- nections required. Provide pressure reducing valve on supply to ejectors. Compressors, receivers and ejectors shall be complete with all pipe and fittings, water gate valves, safety valves, nickel-plated gauges, etc., necessary for the continuous operation of the plant. Operation : When set and connected as specified, this apparatus shall be auto- matic in its action, engaging one or both compressors, and one or all ejectors, as may be necessary. 194 Test and Acceptance: When the apparatus is completed and ready for service it shall be tested as follows : Taking the sewage and such additional water as may be neces- sary, the whole apparatus shall run at its full capacity of 400 U. S. gal- lons per minute for thirty (30) minutes. The apparatus shall then be delivered to the Architect and he may, during the next succeeding week, make such trials within the specified capacity as may be desired. Finally: As it will be necessary to use these ejectors during the erection of the building, they shall be installed as early as possible after con- struction is begun and at such time as directed by the Architect. Pro- vide all necessary protection for the machinery, and before turning this plant over to the Owner put same in first-class condition. KEFKIGEKATING PLANT. Scope of the Work: The work covered by these specifications includes the generator, absorber, condenser, pumps, foundations, tanks, piping, valves, fittings of all kinds, all insulation and all other equipment and appurtenances that may be required to maintain proper temperature in the refrig- erators and to make the amount of ice required for the water coolers, restaurants, bars and club, installed complete and ready for service. All refrigerating machinery shall be so located that a second unit can be installed in future, if desired. Testing Material: All piping, fittings, valves, etc. (except for ammonia), for a work- ing pressure of 100 pounds or less shall be tested to 250 pounds hydro- static pressure at the factory and all those over 100 pounds shall be tested to 500 pounds. Ammonia pipe, fittings and valves shall be tested to 1,000 pounds at the factory. Test and Acceptance: After completion of this installation and before acceptance of the same, all ammonia work shall be tested to 500 pounds hydrostatic pres- 195 sure. The plant must be run for twenty-four (24) hours at the expense of the Contractor and during that time shall fulfill all conditions herein mentioned. Capacity of Plant: Plant shall be of sufficient capacity to make twenty (20) tons of clear ice per day and to maintain the air in the refrigerators at the proper temperature for this class of work. The above conditions must be maintained continuously for twenty- four (24) hours per day, with the refrigerating plant in use fourteen (14) hours, it being shut down ten (10) hours during the night. The room temperature to be taken at 90 degrees Fahrenheit. System : The plant shall be of the absorption type, refrigeration being af- fected by means of indirect expension of ammonia, using Chloride of Calcium brine, of 1.25 specific gravity, circulated through coils by means of brine circulating pumps. Temperature of condensing water shall be taken at 60 degrees Fahrenheit. Pumps shall be steam driven, the exhaust from same being used for the ammonia generator at two (2) pounds pressure, supplemented when necessary with high pressure steam from the boilers. Live steam will be supplied at a pressure of one hundred and fifty (150) pounds at the header. Furnish necessary reducing valve with by-pass prop- erly valved. Generator: Generator shall be of horizontal steel type, mounted on cast iron saddles and provided with return bend steam coils of extra heavy lap welded pipe, and special heavy return bends; all threads shall be tinned. Condenser: Condenser shall be of the double-pipe type supported on stand- ards and made of special ammonia pipe and fittings. Coils shall be so arranged that the water will travel in a direction opposite to that of the gas. Ends of coils shall be connected at inlets and outlets with cast iron or steel headers as required. 196 Absorber: Absorber shall be of the tubular type with steel shell riveted, sup- ported an cast iron saddles and provided with straight tubes. Brine Cooler: Brine cooler shall have steel welded shell provided with brine coils connected at inlet and outlet with cast iron headers and supported on iron standards. Otber Equipment: Rectifier coils shall be of the submerged type, of lap welded pipe with return bends neatly placed in steel tanks. Weak liquor cooler shall be of the double-pipe type. Exchanger shall be mounted on standards. Eeceiver shall be welded and provided with gauge glasses. Pumps: Provide two (2) pumps for pumping brine and two (2) for pump- ing ammonia. They shall be of the direct acting type specially designed for these services and shall be provided with cast iron bed plates or drip pans and force feed lubricators. Each pump of each class shall be of ample capacity to operate the entire plant. Provide snifting valve on suction of each pump. Brine Tank: The brine tank shall be of tank steel provided with angles at top and bottom, and horizontally through center. All parts shall be painted with asphaltum inside and outside, two (2) coats before assembling and two (2) coats after testing. The tank shall be watertight. Tank shall be provided with a wood cover of M. & D. f -inch yellow pine lumber, solidly constructed, neatly finished on edges, and well cleated on bottom, the cleats being spaced not more than two (2) feet apart. Provide a manhole in the cover. All connections to this tank shall be made through cast iron flangeB riveted water tight to tank. 197 Details of Construction: All shells shall be of steel or special cast iron. All flanges shall be carefully faced and scored for gaskets and all bolt holes shall be drilled. All bolts shall be of best locomotive stay bolt iron with hexagonal heads and U. S. standard nuts. All iron castings shall be of soft gray iron presenting a smooth and even surface. Equipment : Provide necessary nickel-plated brass rim gauges six (6) inches in diameter, one (1) for condenser and one (1) for back pressure. Furnish pink Tennessee marble gauge board, not less than 1| inches thick, with all connections behind the board. Gauge board shall be properly supported on angle iron frame securely fastened in place. Furnish gauge cocks with guard rods and glasses for indicating the liquid levels in all tanks in connection with this plant. Furnish six (6) inch pressure gauge similar to other aguges. Provide oil, ammonia, etc., necessary for fully charging and put- ting the plant in operation. Also furnish a complete set of wrenches and other necessary tools required for this plant. Sixes of Refrigerators: The approximate sizes of refrigerators for the Restaurants and Club are as follows: In Connection With Dining Room in Basement: 1 Chef's Box Wx 3'-6"x7'-0" 1 Pantry Box 16'-0"x 3'-6"x7'-0" 1 Garde Mange 12'-0"x 3'-6"x7'-0" I Oyster Box 10'-0"x 3'-6"x7'-0" 1 Back Bar Box 9'-0"x 3'-0"x3'-G" 1 Vegetable Box 8'-0"x 5 / -0"x8'-0" 1 Wine Box 24'-0"x 3'-6"x7'-0" 1 Beer Box 14'-0"xl5'-0"x8'-0" 1 General Storage Box 36 / -0"xlO , -0"x8'-0" 1 Ice Storage Box l(y-0"x 6'-0"x8M)" 198 1 Baker's Refrigerator 7'-0"x 3'-6"x7'-0" 1 Garbage Box In Connection With Restaurant in Basement: 1 Chef's Box 9M)"x 3'-6"x7'-0" 1 Pantry Box .lGMTx 3'-6"x7'-0" 1 Garde Mange .12'-0"x 3'-6"x7'-0" I Oyster Box lO^x 3'-6"x7'-0" 1 Back Bar Box ^-CTx 3'-0"x3'-6" 1 Vegetable Box S'-fTx 5'-0"x8'-0" 1 Wine Box .24'-0"x 3'-e"x7'-0" 1 Beer Box 14'-0"xl5'-0"x8'-0" 1 General Storage Box 36'-O"xl(y-0"x8'-O" 1 Ice Storage Box lV-Crx 6'-0"x8'-0" 1 Baker's Refrigerator 7'-0"x 3'-6"x7'-0" 1 Garbage Box In Connection With Ladies' Tea Room: 1 Chef's Box &-0"x 3'-6"x7'-0" 1 Pantry Garde Mange 16'-0"x y-6"x7'-0" 1 General Storage Box 18M)"x 7'-0"x8'-0" 1 Oyster Box 7'-0"x 3'-6"x7'-0" 1 Garbage Box In Connection With Future Service Kitchen: 1 Chef's Box 6'-0"x 3'-6"x7'-0" 1 Pantry Garde Mange lS'-Cx 3'-6"x7'-0" 1 General Storage Box 18'-0"x 7'-0"x8'-0" 1 Ice Storage Box &-Q"x 6'-0"x8'-0" 1 Oyster Box 7'-0"x 3'6"x7'-0" 1 Garbage Box In Connection With Club in 36th Story: 1 Chef's Box &-0"x 3'-6"x7'-0" 1 Pantry Box W-W'x 3'-6"x7'-0" 1 Garde Mange 12'-0"x 3'-6"x7'-0" 1 Oyster Box 10M)"x 3'-6"x7'-0" 1 Vegetable Box 8'-0"x 5'-0"x8'-0" 1 Wine Box . . : 24'-0"x 3'-6"x7'-0" 199 1 Beer Box 14'-0"xl5'-O"x8'-0" 1 General Storage Box 36 , -0"xl0'-0"x8'-0" 1 Ice Storage Box KK-0"x 6'-0"x8'-0" 1 Baker's Refrigerator 7'-0"x 6 / -0"x7'-0" 1 Garbage Box The above sizes are approximate and are given for the basis of estimate only. Definite sizes will be determined later. Sizes of ice boxes in the bars will also be determined later. Ice boxes and coils in same will be furnished and installed by the Owner, but all piping for same shall be installed by the Contractor to a point near each refrigerator, capped, and left ready for future connection to coils. Ice Making Machinery: Furnish and install freezing tank together with coils, cans, agita- tor, and other equipment necessary for making the quantity of ice hereinbefore specified. Cans shall be of heavy galvanized iron of proper size to make ice cakes of 150 pounds each. Furnish trolley, dump and all other equipment necessary for easy handling of ice. Freezing tank shall be well insulated with wainscoting made of matched boards with clear space of not less than fifteen (15) inches on sides and twelve (12) inches under bottom between tank and boards which shall be filled with granulated cork. Provide storage box for ice, thoroughly insulated. Make all connections necessary for the ice making machinery. Brine Piping: The brine shall be circulated through the brine cooler by means of brine pumps, the cooled brine being pumped through the ice-tank and then returned to the brine tank. Pipe Work: All pipe work, except as noted above, shall be put in place by the Contractor; pipes, unless otherwise specified, shall be wrought pipe, galvanized. All pipes coming in contact with ammonia shall be extra heavy 200 wrought iron pipe. All coils shall be made of extra heavy and re- worked full weight iron pipe known as "coiling pipe." All spiral coils shall be continuously welded from end to end, and joints scarfed long. All coils shall be hammered while being tested to dislodge scale and uncover defects. Fittings: Fittings for brine piping shall be malleable iron, galvanized. All fittings in connection with ammonia piping sball be of cast steel or malleable iron and protected at the threads by glands or rub- ber rings and sweated joints. All unions shall be flanged male and fe- male. All gaskets shall be specially made to withstand the action of ammonia. Valves: All valves used in this work shall be of water gate pattern of a kind required for each particular purpose. Each shall be provided with a hand wheel. Connections: Make all necessary water, waste, steam supply, exhaust and drip connections to this apparatus from the piping installed as specified under "Plumbing, Sewers and Gas Fitting" and "Steam Heating and Ventilating." All pipes shall be wrought pipe, fittings shall be malleable or cast iron. Furnish all labor and material and install all piping required for cooling water, so arranged that this water after passing through the condenser, absorber and rectifier can be delivered to the surge tank or wasted to the nearest sewer, as desired. This piping shall be complete with all necessary valves, fittings, etc. Covering: All tanks, except freezing tank, installed in connection with this plant shall be properly insulated by the Contractor with granulated cork boards and paper ten (10) inches thick, properly secured in place, finished with sectional hardwood lagging, lagging rings and necessary 201 brass bands and clips for same. Bodies of generator and cooler sball be covered in a similar manner. Freezing tank shall be covered as hereinbefore specified. All ammonia and brine pipes shall be covered with cork brine covering approximately two and one-half (2^) inches thick with min- eral rubber finish; all end joints shall be broken, and all longitudinal joints shall be on the top and bottom of pipes. Covering shall be se- curely wired in place and all spaces between covering and pipes, or be- tween covering and fittings shall be filled with melted paraffine and fine granulated cork. Where pipes pass through insulated walls the covering shall extend one inch beyond the walls. All screw fittings and all flange fittings 3 inches and less shall be covered with moulded cork jackets, installed in a manner similar to pipe covering. All flange fittings larger than 3 inches shall be covered with cork insulation lag- ging properly wired in place. All spaces shall be filled with melted paraffine and fine granulated cork. All seams and broken edges shall be filled with melted paraffine and cork dust so as to leave a smooth sur- face, which shall be painted with asphaltum as directed. All cold water pipes shall be covered with wool felt covering \ inch thick, covered with eight (8) ounce canvas. All covering shall be neatly and thoroughly applied, special care being taken with fittings and joints. All exposed covering in the sub- sub-basement shall be provided with bright lacquered bands, put on every eighteen (18) inches, and there shall be a similar band on each side of each fitting. The Contractor shall guarantee that there will be no condensation on the outside of covering, and also that no water will at any time ap- pear in any part of covering. If in his opinion any part of the cover- ing above mentioned will not comply with the intent of these specifica- tions and prove satisfactory in every particular, he shall confer with the Architect before installing same and obtain instructions for in- stallation of the work. Steam ends of all pumps shall be covered with 85 per cent, mag- nesia blocks with Russia iron jackets and spun brass heads. Unit Prices: This Contractor shall name one price only for additions to or deductions from his contract for the respective materials named below: 202 said prices to obtain until the completion of this work and its accept- ance by the Architects. 4" pipe for ammonia, including fittings, installed, per foot $. 3" pipe for ammonia, installed, including fittings, per foot $. 2i" pipe for ammonia, including fittings, installed, per foot ;'., $..•... 2" pipe for ammonia, including fittings, installed, per foot $. 1£" pipe for ammonia, including fittings, installed, per foot . .i — . $. li" PiP e f° r ammonia, including fittings, installed, per foot $ 1" pipe for ammonia, including fittings, installed, per foot . ., $ f" pipe for ammonia, including fittings, installed, per foot $ \" pipe for ammonia, including fittings, installed, per foot $ 4" pipe for ammonia, including fittings, covering and painting, installed, per foot $ 3" pipe for ammonia, including fittings, covering and painting, installed, per foot $..,.. 2£" pipe for ammonia, including fittings, covering and painting, installed, per foot , $. 2" pipe for ammonia, including fittings, covering and painting, installed, per foot $. \\" pipe for ammonia, including fittings, covering and painting, installed, per foot $ li" pip e f° r ammonia, including fittings, covering and painting, installed, per foot $ 1" pipe for ammonia, including fittings, covering and painting, installed, per foot , $. 5" pipe for ammonia, including fittings, covering and painting, installed, per foot $ \" pipe for ammonia, including fittings, covering and painting, installed, per foot $ 4" piping for brine, installed, including fittings, per foot $ 3" piping for brine, installed, including fittings, per foot ■.....$ 203 2^" piping for brine, installed, including fittings, per foot $• 2" piping for brine, installed, including fittings, per foot • $• 1\" piping for brine, installed, including fittings, per foot $. 1£" piping for brine, installed, including fittings, per foot $• 1" piping for brine, installed, including fittings, per foot $• J" piping for brine, installed, including fittings, per foot i $• 4" piping for brine, installed, including fittings, cov- ering and painting, per foot $. 3" brine piping installed, including fittings, cover- ing and painting, per foot $. 2£" brine piping, installed, including fittings, cover- ing and painting, per foot $. 2" brine piping, installed, including fitting, cover- ing and painting, per foot $. \\" brine piping, installed, including fittings, cover- ing and painting, per foot $. 14" brine piping, installed, including fittings, cover- ing and painting, per foot $. 1" brine piping, installed, including fittings, cover- ing and painting, per foot $. \" brine piping, installed, including fittings, cover- ing and painting, per foot $. Valves on ammonia work of the following sizes, installed, each: 4" $ IF $ 3" $ 1" i $• 2£" $ I" $ 2" $ i" $ vr % 204 Valves except on ammonia work of the following sizes installed, each: 4" $ 1£" $ 3" $ 1" $ 2J" $ |" $ 2" $ i" $ ir $ Finally: If approved by the Architect a compression type of refrigerating plant, using ammonia or carbonic anhydride may be substituted for the absorption type specified, same to be complete in every respect and of the capacity specified. 205 STEAM FITTING, STEAM HEATING AND VENTILATING, STACK AND CEILING LTNING. STEAM FITTING, STEAM HEATING AND VENTILATING. Scope of the Work: Furnish and install the boiler feed and vacuum pumps, high pres- sure drip pumps, blow-off pumps, feed water heaters, blow-off, receiv- ing and expansion tanks, radiators, coils, valves, piping, fittings of all kinds, covering, fans, ducts, temperature regulation system, motors, controllers, trenches, ash removal system, etc., as hereinafter specified, together with the necessary auxiliaries and appurtenances to complete the steam heating and ventilating plant and make all live and exhaust steam and drip connections required in and around the Mechanical Plant, leaving the whole complete and ready for operation. Sizes of piping shall in no case be smaller than those shown on drawings or specified. Installation of Work: All suspended pipes and duets shall be kept as close to the ceiling as possible. Special care shall be taken in the installation of all concealed portions of tbis work. All supports for radiators, coils, etc., that may be required in addi- tion to work shown on the Architectural and Structural Steel drawings shall be furnished in place. Testing Material: All pipe, fittings, valves, etc., for a working pressure less than 100 pounds shall be tested to 250 pounds and those above 100 pounds to 500 pounds hydrostatic pressure at the factory. Extra heavy fittings will be required for 100 pounds pressure and above. Guarantee : The Contractor shall guarantee the perfect operation of all ap- paratus installed by him, tbat a complete circulation of steam will be established throughout the entire heating system at atmospheric pres- sure within thirty (30) minutes after the main valves are opened; that the said circulation will be accomplished fully and completely 206 without any part of the apparatus filling with water, without ham- mering or surging in any part, and also that after the circulation is established the plant will maintain a temperature of 70 degrees Fahrenheit in all rooms when the temperature outside is zero (0) with steam at atmospheric pressure. Steam Pressure: Steam pressure at boiler header will be 160 pounds per square inch gauge. Exhaust steam will be used for steam heating at atmos- pheric pressure or vacuum supplemented by live steam when neces- sary. Auxiliaries and Steam Fitting. Pipe Connections: Connect all steam, exhaust and drip connections from the entire Mechanical Plant. All high pressure piping shall be blown out in the presence of the Architect, and shall be kept clean. Boiler Header: Furnish, set up and connect main boiler header as shown on dia^ grams. This header shall be made of best quality wrought steel with welded flanges and all joints shall be made up with approved gaskets. The header shall be subjected to a test pressure of 300 pounds per square inch. Each boiler shall have an independent double valved connection to the header with valves at the header and adjacent to boiler. The valve at the boiler shall be an automatic stop and check valve arranged for hand operation, of a make and type approved by the proper bureau of the City of New York, N. Y. Provide on this header all connections shown on diagrams. Also provide two (2) extra six (6) inch connections closed with valves and blind flanges. All these connections shall be made through extra heavy flanged fittings. Header shall be supported on pipe standards with large size floor flanges placed in such a manner that no vibration will be transmitted to the building structure. Tops of standards shall be equipped with adjustable saddle supports. Provide dividing valves in header as shown. 207 Circulating Mains: Run high pressure circulating main to supply engines and aux- iliary circulating main and provide valve at each connection to main header. Also run auxiliary high pressure circulating main to supply house pumps, fire pumps, air compressors, refrigerating plant and other auxiliary equipment, and provide valve at each connection to circulating main for engines. Mains shall be supported on pipe standards as specified for high pressure header. Bends: All changes in direction in connections to boilers, engines, and in circulating mains shall be made with bends, made of extra heavy wrought pipe, bent to a radiu?i of not less tban 5 times the diameter of the pipe, great care being taken not to burn the pipe nor crimp the weld, except immediate connections to boilers, which shall be long radius elbows. Returns to Feed Water Heaters: All returns from steam heating mains and low pressure apparatus shall be connected to feed water heaters with necessary valves and by- passes to insure operation of the plant when heaters are cut out. Free Exhaust: Exhaust riser shall be installed in pipe shaft where shown, firmly supported at bottom upon pipe standard with concrete foundation, so that expansion will be upward to the thirty- fourth intermediate story; at this point connection will be taken to supply the heating system. Install immediately below this connection an expansion joint to take up the expansion of the vertical riser. A special fitting shall be pro- vided in this story to take the weight of riser above the expansion joint, same to be securely anchored in place and arranged so that expansion in riser will be upward. Riser shall be secured so as to maintain a vertical alignment. Riser shall finish with cast iron exhaust head above roof, terminating an directed, and shall have a two (2) inch drip to carry water of con- densation to blow-off tank with two (2) inch branch to feed water heat- ers through loop seal, with necessary valves; drip pipe shall be prop- 208 erly fastened with provision for expansion. Install back pressure valve on main exhaust above point of connection of distributing mains to heating system in thirty-fourth intermediate story and arranged for operation from the sub-sub-basement. Safety Valve Relief: Safety valves on each boiler shall discharge into a heavy steel hood, connected into an eight (8) inch pipe connected with base of vapor riser. Provide additional $-inch safety valve on each main safety valve connection to blow into Boiler Booni. Safety valve outlets must be ar- ranged to point away from the bridge or direction in which persons would be liable to stand. High Pressure Drips: All water of condensation from high pressure piping free from oil or other matter shall be returned by independent connections to the boilers by means of a gravity return system with swing checks ready for operating and provided with a high water alarm. For this purpose an opening shall be left in each boiler of the size required by the return system. Open blows shall discharge into pipes run independently to a tank placed in a location approved by the Architect. This tank shall be connected to nearest sewer. High pressure drips shall be covered as hereinafter specified for other high pressure piping, except that covering shall be one (1) inch thick. (If approved by the Architect, a trap system of high pressure re- turns may be installed, discharging to feed water heaters.) Blow-Off Connections: Join the blow-off connections from each boiler with extra heavy wrought pipe, galvanized, and connect to blow-off tank. Each connec- tion shall be complete with water gate valve. Blow-off line shall be run in trench. Provide plugged "T" in blow-off connection from each boiler, placed between the blow-off valve and gate valve. 209 Trenches: All water of condensation, including high and low pressure drips, shall be returned to their proper basins by gravity, pipes being run, where required, in trenches. These trenches shall be of concrete eight (8) inches thick made water tight on sides and bottom. Except in the Engine Eoom, the tops shall be made of heavy cast iron or steel, diamond pattern floor plates, with lifting holes making lap joints with each other and sides of trenches. The tops of these trenches shall bo level with the finished floor. Provide necessary angle iron frames to receive floor plates. In the Engine Room covers will be provided aa specified under "Marble and Tile Work." Oil Separator: Provide on exhaust connection to expansion tank an oil separator and muffler of ample capacity. Blow-Off Tank and Pnmps: Furnish and set up in pit one (1) blow-off tank of 1,000 gallons capacity, made of one-half (1) inch flange steel; tank shall have bumped heads, securely riveted and made water tight under a pressure of 150 pounds per square inch. Equip this tank with a manhole 10x16 inches, with bolts, crab and gasket complete. Paint inside and outside of tank two (2) coats of asphaltum. Make all connections between boilers, tank, pumps and sewers of extra heavy wrought pipe, galvanized, with screwed joints also run eight (8) inch vapor pipe from tank with free exhaust, ter- minating in a cast iron exhaust head above roof. Run 2-inch condensing water pipe from supply to feed water heat- ers through coil in the blow-off tank with proper connections to feed water heaters, so that all water used for condensing purposes can be used as make-up water in the boilers. All connections shall be prop- erly valved. Also furnish and install in pit two (2) steam driven blow-off pumps for taking water from blow-off tank and discharging same to sewer and provided with govei'nor. Make all steam and exhaust con- nections; also connection to blow-off tank. Pit shall have walls and bottom of concrete not less than eight (8) inches thick, and shall be made water-tight in a manner approved 210 by the Architect. Pit shall be of proper size to receive the blow-off tank and pumps. Provide gas pipe rail around pit with iron ladder for access to pit. Receiver Separators: Equip each steam connection to engines with a receiver separator of wrought steel installed in a vertical or horizontal position as directed, complete with flanges, water glass and valved drip connec- tions. Capacity of each separator shall be not less than three (3) times the capacity of the high pressure cylinder of the engine which it supplies. Details of separators must be submitted to the Architect for approval. Hot Water Heaters: Furnish, set up and connect eight (8) hot water heaters with all connections complete. Two (2) heaters will be used on high level house tanks; two (2) on intermediate level house tanks; two (2) on lower level house tanks, and two (2) on city pressure. These heat- ers will all be installed in sub- sub-basement. Heaters shall be sup- ported on wrought pipe or I beam stands, resting upon and securely fastened to the floor with large size floor plates. Supports for heaters shall be arranged in such a manner as will not interfere with passage or access to machinery at floor level. Tanks shall be well stayed and braced. Heating of water will be done by exhaust steam from expan- sion tank, and water of condensation returned to feed water heaters, but all connections shall be valved and by-passed so that if desired water can be heated by live steam with corresponding return of con- densation. Provide all valved and flanged connections required. These heaters shall be of the closed heater type, and provided with steamless drawn brass tubes not less than one and one-half (H) inches in diameter, and properly arranged for expansion and cleaning. Each heater shall have a capacity to heat 2,000 gallons of water per hour from fifty (50) degrees to one hundred and eighty (180) degrees Fahrenheit with steam at atmospheric pressure. Water stor- age capacity of each heater shall be not less than five hundred (500) gallons. Provide on each heater thermometer and automatic tempera- ture regulating device of a make and kind approved by the Architect Provide a pressure reducing valve on high pressure connection to hot water heaters. 211 Low Pressure Drip Tank and Pumps: Furnish and install in pit an ample sized tank made of one-half (£) inch flange steel with humped heads, made steam tight under a pressure of one hundred and fifty (150) pounds per square inch. Con- nect to this receiving tank all drips containing oil and other matter from the plant. Place in this pit duplicate separators, arranged to separate oil from water and complete with all connections and equip- ment necessary to deliver the oil to the oil filters and the water to the drip tank. Provide two (2) steam driven high pressure drip pumps, each of sufficient capacity for the plant, and provided with governor. Make all steam and exhaust connections, also make connection between tank, pumps and sewer. Connections to sewer shall be through a four (4) inch extra heavy wrought pipe, galvanized, complete with back water valve. All high and low pressure drips emptying into this tank shall be, run separately and connected into a header at receiving tank. In ad- dition, all drips from exhaust piping shall be run in separate pipes. Equip each connection at each engine and exhaust pipe with check valve and hand valve, both of brass. The receiving tank shall be painted inside and outside two (2) coats of asphaltum, and all parts shall be heavily coated with red lead before assembling. Construction of pit and covering for same shall be as specified for blow-off tank pit. From the top of this receiving tank take out a four (4) inch pipe and run to roof, terminating in cast iron exhaust head, with three (3) inch connection from receiving tank on heating system. Boiler Feed Pomps: Furnish, set up on foundations and connect two (2) duplex out- side end packed bronze plunger pumps, of the pot valve type, of a makp approved by the Architect; each pump shall have a capacity to de- liver 93,000 pounds of hot water per hour taken from feed water heater under a back pressure of three (3) pounds. These pumps shall be fully equipped for the pumping of water at a temperature of 210 degrees and shall have large size air chambers on both suction and discharge. The piston speed of pump shall not exceed twenty-five (25) feet per minute under the above conditions. 212 These pumps shall be so connected as to admit of their being nsed singly or combined on any one boiler and piping must be so adapted that one pump can deliver hot water from heaters to any one boiler and tbe other pump take water from cross-head at filters for the other boilers, or vice versa. The pumps shall be also so connected that there will be a double system of piping to boilers. Make all necessary connections between heaters, cross-head, boil- ers and pumps, leaving the pumps complete and ready for operation. Install all live steam, exhaust steam, drip connections, traps, etc.,, in and around these pumps. All water connections in and around these pumps and heaters shall be equipped with gate valves, except that valves at the boilers shall be globe valves, with a flanged union on each side of valve. Each boiler feed pump shall be equipped with an approved force- feed cylinder lubricating pump as also sight feed lubricators, spanner wrenches and nickle-plated pet cocks on air chambers. Provide snifting valve on suction to each pump. Also provide pressure regulating valve on each pump. (If approved by the Architect, steam driven turbine pump may be substituted for the plunger pump specified.) Thermometer Wells: Provide the hot and cold water headers at boilers with tubes so that temperature of feed water can be read from same. Meters: Furnish, set up and connect in .each boiler feed pipe, making all necessary valved connections and by-passes, one meter of a make ap- proved by the Architect; meter shall be especially adapted to boiler feed work. They shall be supported in a substantial manner and located where approved by the Architect. Feed Water Heaters: Furnish, set up and connect where shown two (2) open vertical feed water heaters, each to have purifier, filter, oil separator and condensa- tion receiver and having a capacity to filter and heat in one (1) hour 200,000 pounds of water from 45 degrees to 210 degrees Fahrenheit, 213 and to remove all oil and other matter from water of condensation returning to it. These heaters shall be fully equipped with trimmings to take care of exhaust, blow-off connections to catch basin of oil and water, and automatic water supply. The heaters shall be set so there will be at least four (4) feet head from the level of the water to the pump suction. Auxiliary Boiler Feed Piping: Cold water supply piping will be brought to points near the boiler feed headers as specified under "Plumbing, Sewers and Gas Fitting." Connect with same and to the boiler feed headers, properly valved, in such a manner that any boiler can be filled with water from the high level house tanks when desired, and so that any boiler when cold can be filled with water at city pressure. Feed headers at boilers shall be located so that valves can be operated easily from floor. Gauge Board: Furnish, set up and connect in chief engineer's office at location directed one (1) gauge board of pink Tennessee marble, properly stopped, chamfered and mounted on japanned angle iron frame, well braced at top and bottom. Gauge board shall be not less than 2 inches thick, free from faults. Equip the board with the following apparatus, all to be dust proof, nickel-plated brass, mounted on face of board. All connections shall be made at rear of board, and each connection shall be provided with lever handled stop cock, placed where easily accessible. One (1) gauge for vacuum and heating systems. This shall be a compound gauge, with zero for center line. One (1) recording gauge for heating system, with zero as center line, complete with book, chart and ink. One (1) recording gauge for high pressure steam connected to steam header with high and low alarm batteries, chart book and charts. One (1) recording thermometer for boiler feed. One (1) pressure gauge for high pressure steam, connected to steam header, and corrected for difference in level below boilers. One (1) draft gauge graduated to 1/10 inch. One (1) recording vacuum gauge for heating system, complete with book, chart and ink. 214 One (1) air pressure gauge for air receivers, ejector system. One (1) air pressure gauge for temperature regulation system. One (1) Howard movement eight-day clock. One (1) recording device for recording C0 2 in flue gases. All gauges shall be 8^ inches in diameter, standardized. Furnish all material and labor and do all work necessary to con- nect these gauges with the machinery of which they are a part. For high pressure work the range shall be between and 300 pounds, with 150 pounds for center line. All connections between machinery and this board shall be made with extra heavy fittings. Design of board shall be submitted to Architect for approval. Special Supply and Return Piping: Run high pressure supply and return piping to kitchens, bar and club as shown on diagrams. Fixtures in these locations will be fur- nished by the Owner, but the Contractor shall cap pipe in floor or walls and leave ready for connection by the Owner. Provide all press- ure reducing valves required. Returns shall be run to feed water heaters. Compressed Air System: Connect to the compound air receivers installed as specified under "Ejectors" and install air filter and run piping to supply compressed air in proper location for cleaning all motors and generators, and for the Barber Shops. Install a 2-inch riser to 38th story with connections for cleaning all motors in elevator machinery rooms and 38th story. Riser shall be run in pipe shaft and branches in floors. Piping for cleaning generators and all motors in the basement, sub-basement and sub-sub-basement shall be run where approved by the Architect with the number of outlets required for properly clean- ing the machines. Provide three hundred (300) feet of hose in lengths directed, com- plete with a nozzle for each length. Piping shall also be run to Boiler Room and connections made to the compressed air cleaning apparatus for boilers. Connections in Barber Shops shall be made at each lavatory as 215 directed. AH connections shall be capped and be left ready for hose with all necessary valves and fittings. Horizontal mains shall be run at sub-sub-basement ceiling, except for Barber Shop in Basement, which shall be run at sub-basement ceiling. All pipes shall be wrought; pipe and fittings shall be galvanized. Provide all pressure reducing valves necessary. Oiling System: Furnish, set up and connect complete, oil filters, oil tanks, pumps, piping, valves, etc., for an oiling system for engines. All piping in connection with this system shall be wrought pipe and all piping and fittings shall be galvanized except that all piping and fittings in and around engines shall be nickel-plated brass; oil tanks adjacent to en- gines, and suspended oil tank over filters, shall be of flanged steel with bumped and dished heads, made tight under 100 pounds pressure per square inch. Oil filters and pumps shall be in duplicate and shall be complete with all connections to gravity tank. Suspended and return tanks shall be connected to gravity tank and each connection shall be provided with valve. Also provide drain pipes with valves on tanks; tanks shall be equipped with water glasses. Provide proper means for supplying oil from barrels to the system. All tanks at engines shall be fastened to sub-base with wrought iron brackets and all connection to tanks, filters and manifolds shall be provided with valves. A complete layout of this oiling system must be submitted to the Architect for his approval. Boiler Compound Device: Furnish and install a device for supplying compound to the boil- ers, through the discharge of the boiler feed pump. Boiler Tube Cleaning Pump: The Contractor shall furnish and install where directed a steam driven centrifugal pump for circulating water through boiler tubes, taking suction from blow-off tank. Make all steam and exhaust con- nections, also make connection to nearest water supply. 216 Expansion Tank: Furnish, set up on concrete saddles and connect one (1) flange steel expansion tank with bumped heads, well stayed and braced, and equipped with gauge glass and nickel-plated combination vacuum and low pressure gauge. All exhaust shall return to this tank with by- pass to atmosphere and heating mains in thirty-fourth intermediate Btory. Make live steam connection to this tank, provided with two (2) pressure reducing valves and by-passes to admit of two (2) reductions in steam pressure. From this tank run connections for first story steam heating mains, fan coils and for hot water heaters. Equip tank with 5-inch pop safety valve. Make necessary valved connection with drips to vacuum pumps. Make all connections to this tank, sizes to be as shown on diagrams. Each connection shall be valved at tank, and provided with a brass tag showing what it supplies. Tank shall be made steam tight under 150 pounds per square inch. All connections to this tank shall be made through flanges securely riveted to tank. Provide manhole complete with crab and gasket. Tank shall be provided with a baffle for separating water from eteam. Provide runway around expansion tank and ladder for access to valves on same. Damper Regulator: Furnish and install an approved automatic damper regulator and connect with damper in main breeching. Furnish all necessary shafting, anti-friction bearings, hangers, etc., to properly connect this regulator and damper in order that same ehall have positive action. Ladders and Runways: Furnish and install ladders and runways for access to valves on main header and boiler connections, also to manholes in boiler drums. Kunways shall be provided with two (2) inch pipe rails and ample size pipe rail holders and pipe supports. Floor of runways shall be made of ca&t iron or steel open work of a neat pattern, the whole put up in a substantial and workmanlike manner. Tracks: Furnish and install in boiler room where shown a system of cast iron tracks, with switches, for handling coal cars in boiler room. 217 Tracks shall be of the narrow gauge type, and shall he complete with all necessary switches, turntables, etc. Tracks shall be imbedded in floor in Boiler Room while floor is being laid. Complete layout of track system shall be submitted to Architect for approval. Coal Cars: Furnish six (6) coal cars for handling coal and ashes in boiler room. They shall be of one ton capacity and arranged for one side to let down parallel to the floor. Cars shall be made of sheet steel, stiffened with angle irons and with rounded corners and arranged to run on tracks hereinbefore spec- ified. Type of car shall meet with the approval of the Architect. Platform Scale: Furnish and install in Boiler Room where shown or directed a platform scale of not less than two (2) tons capacity complete with platform, pit, beam box, track, and all necessary mechanism in connec- tion with this type of scale. Platform shall be of sufficient length to accommodate the charging coal cars herein specified. Graduation of the beam shall be in pounds. Type of scale shall meet with the approval of the Architects. Boiler Cleaning Device: Furnish and install in each boiler setting a soot cleaning system of piping, so that the boiler tubes may be cleaned with compressed air without the use of hose. This device shall be complete with all piping, fittings, valves, etc., and with hose connection. ,, MOTOBS. Motors and Accessories: Motors used in connection with the ventilating plant (except for air wash circulating pumps) shall be variable speed and shall operate their respective machines continuously over the entire range of speed from 50 per cent, below normal speed by armature control to 10 per 218 cent, above normal speed by field control or over the same range of speed by field control only. All other motors shall be constant speed. Each motor shall be of ample size to operate the respective de- vice to which it is connected at its proper full load and speed contin- uously. Under the above conditions each motor shall operate without shift- ing of the brushes from no-load to full-load, without sparking, cutting or blackening of the commutator, and without heating in any part of windings more than 40 degrees Centigrade or any part of commutator more than 45 degrees Centigrade above the temperature of the sur- rounding atmosphere. Motors must be of high efficiency and must be subjected at tbe factory to an insulation test of 1,500 volts alternating current for a period of one (1) minute. Bearings sball be self oiling and equipped with oil gauges. Controllers. Each variable speed motor shall be equipped with a no-voltage re- lease speed regulator designed to give 50 per cent, reduction by arma- ture control and 10 per cent, increase by field control or above varia- tion by field control only. The controller resistance shall have capac- ity for continuous operation over the entire range of speed without injurious heating. All other motors shall be equipped with no- voltage release start- ing rheostats. All controller boards shall be of pink Tennessee marble, not less than 1^ inches thick, free from faults. Each board shall be properly secured to a japanned angle iron frame and shall stand at least one (1) foot from any combustible material, and shall have a distance of at least three (3) feet between the bottom of the board and the floor line. Starting rheostats shall have removable segments with binding posts at rear with connections plainly stamped thereon and boxes shall be arranged for either wall or floor connections. In place of line switch and fuses each controller board shall be equipped with one double 219 pole, double arm, with independently operating arms, overload re- lease laminated contact and pressure carbon break circuit breaker in main line of circuit of motor. Installation of Motors and Controller Boards: All motors and controllers shall be installed by the Contractor. Bases: All motors shall be provided with No. 20 B. & S. gauge planished copper drip pans with beaded edges placed under bearings and se- curely attached to motors. HEATING SYSTEM. All rooms above grade shall be heated by direct radiation. Mechanical ventilatidn shall be installed where shown. Radiators and coils are to be operated by a two-pipe vacuum sys- tem with mains located at points shown. The Contractor shall be responsible for stoppages in return valves and piping, and all piping shall be blown out in the presence of the Architect and shall be kept clean. Mains: Distributing mains shall be connected to main exhaust in thirty- fourth intermediate story as indicated on diagrams. They shall be run as shown and shall be supported from beams above by wrought iron clamp hangers set not over twelve (12) feet apart. The supply mains shall deliver steam to the distributing risers located around walls of the building. One set of pipes shall be run to supply radiators and another set to return water of condensation to the return system. Connections of risers to supply radiators located below the mains shall be made from the under side of the main and connections to supply risers or branches to radiators above the mains shall be made from top side of main. Each riser shall be separately valved with a gate valve at the main. An independent supply and return shall be run for direct radia- tion in the first story. Steam heating mains shall be raised and dripped wherever nec- essary in the opinion of the Architect to provide the maximum amount of head room. Risers: All supply and return risers shall be located where shown and shall be of the sizes shown on diagrams. They shall be provided with valves at connections to mains. Each riser shall be anchored firmly in the 2d, 8th, 16th, 24th and 32d floors so that expansion will be in both directions from tliese points with expansion loops in the 4th, 12th, 20th and 28th floors. Sides of loops shall be as long as possible in the space provided. Special attention must be paid to the offsets at all floors where same occur. At the other floors risers shall be so anchored to beams as to maintain perfect alignment. All anchors at fastening point-3 shall be at least four (4) inches long at points where same are clamped to risers. Eisers are to be concealed throughout the building and special care shall be taken in the installation so that they will be located wholly within the space provided for them and perfect alignment vertically maintained. Provide in each riser in each story where same is not shown con- nected to a radiator, at the proper height above the floor line, a plugged tee of proper size for the future installation of a radiator. Returns: All returns of condensation shall be delivered to the feed water heaters by means of the vacuum system employed. At the bottom of each supply riser shall be placed a drip connec- tion to return complete with a valve of the kind used in the vacuum system. Each return riser shall be provided with a valve at its lowest point. Provide drip pockets at the bottom of all risers located at acces- sible points. , , * 221 Sizes of Connections: All radiators and coils shall be connected through a two-pipe sys- tem and graded down toward the return end. The supply and return connections shall be graded down toward respective risers. These connections must be so set that they will not be trapped by the expansion of the risers. Where one branch serves two radia- tors, it shall he not less than 1 inch in diameter and no connection shall be less than f inch in diameter. The size of supply valves on radiators and coils shall be as fol- lows: f-inch shall not supply more than 60 square feet. 1-inch shall not supply more than 90 square feet. 1-^-inch shall not supply more than 140 square feet. Branch connections to radiator valves shall be run below the floor and shall be as follows : 1-inch pipe shall not supply more than 40 square feet. 1^-inch pipe shall not supply more than 75 square feet. l|-inch pipe shall not supply more than 125 square feet. Radiators and Coils: Radiators shall be located as shown, unless express permission is given for change. Special care must be taken in the location of radia- tors which are to be concealed. Sizes shall not be less than indicated, although, if in any case the Contractor considers a larger radiator or coil necessary to enable him to fulfill the guarantee which accompanies these specifications, the increase in size shall be made by him. Top of radiator shall in no case come above the sill of window. All radiators shall be cast iron of the steam pattern with plain surfaces. The coils shall be of new wrought pipe, unless specifically noted to the contrary, and shall be supported on iron supports neatly and securely attached to iron work. Coils shall have spring pieces at inlet ends ; all shall be provided with necessary manifolds. Finish of Radiators and Coils: All radiators, coils and connections to same shall be painted two (2) coats, final coat tinted as directed by the Architects. 222 Pipe: All pipe shall be new wrought pipe, standard weights and dimen- sions, except where otherwise specified. All pipe between boiler feed pumps and boilers shall be of brass, iron pipe size, and extra heavy. Fittings: Fittings shall be fine grained gray cast iron, except that all fit- tings in connection with brass pipe for hot water boiler feed shall be extra heavy brass, cast in same mold as extra heavy iron fittings. All flanges and fittings shall be of uniform thickness throughout and concentric, thoroughly cleaned, wire brushed, pickled and finished smooth inside and outside. All flanges shall be faced and drilled. Standard weights and dimensions to govern. All threads shall be clean cut, smooth and tapering. Blind flanges shall be heavy ribbed from center boss to outside edge of flange, and all bolt holes shall have bosses. All curved fittings, except as specified for bends, shall be of the sweep or long radius pattern. Joints : All flanged joints on low pressure work shall be made with rubber gaskets. All flanged joints on high pressure work shall be welded steel faced on pipe approved by the Architect, and made with sheet packing of a material especially designed for this class of service. Threaded joints may be made with red lead, but caution must be taken that only a thin coat of lead is put on the threads. All joints shall be made tight under steam pressure. All pipes, fittings and valves three (3) inches and greater in diam- eter shall be made up with flanged joints, except that heating piping below twelve (12) inches in diameter, other than connections at expan- sion tank, shall be made up with screwed joints. Securing Piping: All piping shall be firmly secured with proper allowance for ex- pansion and contraction, which shall be compensated for as much as possible by right angle turns. Wherever suspended, expansion hang- ers must be used; all supports for pipes must be arranged to prevent swaying. 223 Pitch: In all work the main supplies shall have a pitch of not less than ] inch in ten (10) feet. All small pipe shall have a pitch of not less than one (1) inch in ten (10) feet. Insulation: Where pipes pass through walls, floors, partitions, pipe enclos- ure walls, marble or wood trim, they shall be provided with galvanized iron sleeves. For vertical piping sleeves shall be made with top edges turned over to give good bearing surface and beaded edges at ceiling; on risers they shall be adjustable and so made that bottom of sleeve will project one (1) inch below ceiling, and shall be arranged to per- mit covering to pass up in same. Where risers are exposed sleeves shall be finished at floor line with cast iron plates. For horizontal pipes, sleeves shall have expansion plates to allow for expansion of pipes ; plates must not slide by sleeve flanges. Sample of sleeve shall be submitted to the Architect for approval. Steam Piping in Floors: Except branches to radiators, in every case where steam supply and return pipes must be run concealed in the fill above floor beams they shall be installed in ducts of No. 20 galvanized iron, rectangular in section and of a width required. These ducts shall be provided with covers of similar material soldered on before floors are laid. Where pipes pass through these covers, provide thimbles with heavy cast iron floor flanges. Great care must be taken in the installation of these boxes and proper provision must be made for expansion. Pipes shall be covered as hereinafter specified under "Covering." Place a covering of rock concrete at the sides of the galvanized iron boxes and provide all necessary protection of boxes until floors are laid. Over radiator connections where in floor provide an arched cover of No. 18 galvanized iron. Connections must be covered same as the risers. Valves : For high pressure steam, valves shall be of the globe or angle pat- tern, extra heavy, except dividing valves in main high pressure header, 224 in high pressure engine circulating main and engines fed from same, high pressure pump circulating main, and high pressure supply from circulating main to expansion tank, which shall be gate valves. All these valves shall be suitable for a working pressure of 250 pounds. Body and bonnet flanges shall be grooved to hold packing. Flanges shall be faced and drilled to a template. All gate valves 6 inches and larger in diameter shall be provided with by-passes and with wedge gates and rising stems. These valves shall be of the highest quality and shall contain not more than seven-tenths of 1 per cent, phosphorus, and not more than one-tenth of 1 per cent, sulphur ; tensile strength shall not be less than 20,000 pounds per square inch. Valves shall be provided with renewa- ble seats. For low pressure steam, valves shall be of the water gate pattern. All gate valves on the expansion tank connections and all other gate valves 3 inches and above in diameter, except on heating system, shall be flanged and provided with companion flanges. All check valves shall be of brass. All fan coils operated by thermostats shall be equipped with auto- matic valves. All radiators and coils shall be provided with packless radiator valves with wood wheels, nickel-plated trimmings, unions and rough bodies. Valve handles which control radiators behind grilles shall be placed in easily accessible locations at points approved by the Architect. All radiators and coils and each sub-division of the fan coils shall be provided with automatic return valves of a kind suitable for the system operating the plant at atmospheric pressure or vacuum. Ex- cept on fan coils, return valves shall be nickel-plated. All main steam valves in Engine and Pump Rooms which are not within easy reach of the operator shall be provided with chains or other approved means for closing same from the floor. Vacuum System: It is the intention to have the steam throughout the entire system circulate at one-half (i) pound pressure or below same, and the Con- tractor shall install a complete system of piping to accomplish this result. All piping shall terminate in the Pump Room. 225 All subdivisions of the heating apparatus, including fan coils, Bhall have corresponding subdivisions in the vacuum system of piping so that a shutting down of a portion of the apparatus will not inter- fere with the successful operation of the balance. The vacuum system shall be of a type which does not require con- densing water and valves shall be so constructed that no steam will pass through and shall be noiseless in operation. Provide a connection to hot water heaters. Furnish all apparatus, machinery, valves, etc., for the vacuum sys- tem, run all return or other pipes required to make all connections to radiators, coils, heaters, etc., also to sewer and water supply, if re- quired. Furnish and install, in location approved by the "Architect, on foundations, and connect three (3) vacuum pumps. Each pump shall be of sufficient capacity to operate one-half the system. Vacuum pumps shall be steam driven and shall deliver into a receiving tank which shall be provided with vent and connection to feed water heaters. Gauges shall be mounted on a pink Tennessee marble gauge board not less than 1} inches thick, free from faults, and shall be mounted on an angle iron frame similar to frame hereinbefore specified for con- troller board under "Motors and Accessories." All gauge board connections and instruments shall be nickel-plated brass. Test and Acceptance: When the vacuum system is ready to be turned over, and before acceptance same shall be tested as directed by the Architect. This plant must be capable of producing and maintaining a vacuum through- out the entire return piping of not less than five (5) inches at all points in the system. Licenses : Furnish the Owners with the necessary licenses to operate the vacuum system, but under no circumstances will any licenses be ac- cepted that demand of the Owners the acknowledgment of the validity, of the patents covering the apparatus installed. 226 Testing: The Contractor shall thoroughly test his work, and all risers and other pipes to be concealed shall be subjected to proper pressure test and be made steam tight before covering is put on. The heating sys- tem shall be steam tight under a pressure of fifteen (15) pounds per square inch. Covering : After all piping is thoroughly tested and accepted, pipe and fit- tings shall be covered as follows: All high pressure piping and all exhaust piping, including riser, shall be covered with 85 per cent, magnesia 1£ inches thick. All heating and low pressure piping, except distributing risers in the heating system, shall be covered with high pressure asbestos moulded sectional covering, having walls not less than one (1) inch thick. All supply and return risers shall be covered with f -inch thick wool felt sectional covering, asbestos lined and covered with asbestos sheath- ing and covered with canvas. This covering shall be set into cups provided on risers and shall extend inside of floor sleeves; special care shall be taken to see that covering extends inside of sleeve not less than two (2) inches. All piping exposed in cold places shall be provided with an addi- tional frost proof covering. All cold water piping shall be covered with wool felt covering one- half (I) inch thick, covered with insulating paper and properly pro- tected with a waterproof covering. All piping between boiler feed pumps and boilers shall be coA'ered with wool felt covering in two layers each § inch thick. All tanks and heaters installed shall be covered with 14-inch thick moulded asbestos blocks wired on with one (1) inch air space formed of angles between covering and shell, stretching thereon wire netting of one-half (|) inch mesh, and covered with one-half (£) inch thick asbesots cement felt. Steam ends of all pumps shall be covered with 85 per cent, mag- nesia blocks with Russia iron jackets and spun brass heads. All of the above work shall be covered with eight (8) ounce can 227 vas, which shall be so put on that no frayod edges will be exposed. All high pressure and exhaust piping and fittings in the sub-sub-basement shall be neatly covered with sheathing paper and eight (8) ounce can- vas, sewed on over the covering above specified. Flanges in above shall be provided with similar covering made removable. Asbestos moulded sectional covering and blocks shall contain not less than ten (10) per cent, of white asbestos fibre and shall not be subjected to extreme heat in drying as determined by finger impres- sions on finished material. All covering on pipes in third intermediate and thirty-fourth in- termediate stories shall be provided with bright lacquered bands put on every eighteen (18) inches, and with similar band on each side of each fitting. All covering shall be neatly and thoroughly applied, special care being taken with the fittings and joints. VENTILATING SYSTEM. System: Fresh air is to be introduced and foul air exhausted at points indicated on diagrams, and all systems shall operate practically noise- lessly. Fresh Air Intakes: Intakes with iron gratings for fresh air fans will be furnished and installed as specified under "Ornamental Iron." Connect with these intakes and run No. 18 galvanized iron ducts to fans, an independent duct being run to each unit as shown. Tempering Chambers: Build a tempering chamber for each fresh air fan, of No. 18 gal- vanized iron, well stayed and braced with angle irons, the whole being air tight. Make connections to fans and provide each chamber with a tight fitting door having lock, key and hardware, and set in wall of chamber for access from floor. Edge of door shall be faced with felt on the inside to insure a tight fit. Exhaust Chambers: Build exhaust chambers where shown and make connections to exhaust fans, all in the manner specified for tempering chambers. 228 Where two or more ducts are connected to one exhaust chamber they shall be so arranged that the flow of air shall be free through all ducts. Fresh Air Dampers: Furnish and put in place in each fresh air connection to tempering chambers a balanced sheet iron damper to close tight. The damper shall be painted two (2) coats of asphaltum. Provide this damper with necessary operating device so that it can be operated easily from the floor. Fan Discharge Outlets: Equip each exhaust fan with discharge outlet, protected with hood and deflector. These outlets shall be made of 20-ounce copper above roof and shall be properly secured to roof beams; they shall be de- signed so as to present as little obstruction to passage of air as pos- sible. In addition to the exhaust outlet specified each exhaust fan for kitchen service shall be provided with a free discharge direct to atmos- phere with fusible link and damper, so arranged that in case of fire the damper will close against the fan inlet and allow the products of combustion to pass directly to the atmosphere. Air Washing Devices: Furnish, install and connect between each fresh air fan and its tempering coil3, an air washing device, which shall be of ample ca- pacity for the amount of air passing through, the velocity of which shall not exceed 500 feet per minute. All parts of the washing device coming in contact with water shall be of heavy copper and all parts shall be made water tight. Spray heads shall be of brass and shall bo arranged for automatic cleaning. This air washing device shall be complete with circulating pump and motor of ample capacity for supplying all necessary water for the spray pipes. All main connections to air washers shall be provided with valves to regulate the flow of water, and all branches to spray pipes must be installed in such a manner that they can easily be cleaned or flushed. Make all necessary water and sewer connections, and supply and re r turn piping. This work shall be completed in the same manner as other similar work installed in the building. 229 Complete details of the air washing devices shall be submitted to the Architect for approval. All piping in connection wtih these air washes shall be wrought pipe galvanized, of standard weights and dimensions, except inside of chambers, which shall be brass. Provide all necessary doors for access to air washing device with window in door between tempering coils and washer. Directly opposite this window on the other side of chamber provide a similar window. Heating Coils: Furnish, set up on an angle iron frames and connect the coils for heating the air supplied to the fresh air fans. Each heating coil shall be made of one (1) inch wrought pipes, staggered in a heavy cast iron base and there shall be four (4) rows of tubes in each base. Heating coils shall be of the capacity and free area indicated on heating diagrams. Heating coils shall be of the approximate width shown on dia- grams, extra wide bases being provided where necessary. Where shown, coil3 shall be set end to end. (If approved by the Architects "Vento" cast iron heaters may be substituted for the pipe coils specified, same to be of the same ca- pacities and having not less than the free area specified.) Tempering and re-heating coils shall be connected in batteries, each enclosed in a steel housing, provided with extension for connec- tion to fan as shown. Sub-divisions of the fan coils, except first section of tempering coils for each fan, shall be provided with diaphragm valves which will automatically control the steam supply; the tempering coils shall be arranged so as to be controlled by two thermostats and the re- heating coils so as to be controlled by one thermostat. Hand valve only shall be installed on the first section of tempering coils for each fan. Provide under each battery of tempering coils for fresh air fans a cold air by-pass, at least two (2) feet high, provided with a damper controlled by a thermostat. Provide under each battery of re-heating coils a similar by-pass, without main damper; by-pass shall be con- nected to hot air ducts from tempered air chamber, and each hot air 230 duct and its by-pass shall be provided with a pair of dampers con- trolled by a thermostat arranged to maintain air in the rooms at a temperature to be determined later. Locations of these thermostats shall be as directed. These thermostats shall be operated with compressed air and con- nection shall be made with compressed air receivers installed as spec- ified under "Ejectors." Furnish complete all piping, fittings, valves, etc. Make all steam and return connections required, properly valved. Fans: Fans shall be of the multivane type and shall be properly pro- portioned for the requirements specified. The housing of each fan shall be properly designed for the conditions under which the fan must be installed; they shall be made of steel with heavy stiffeners of channels, angles or tees, or if approved by the Architect, of cast iron. They shall be set upon large angle iron bases and be complete with shafting, adjustable boxes, ring oilers, etc., and equipped with polished brass sight feed oil gauges on all bearings. Each fan shall be provided with a plate fastened to fan housine where directed, stating the portion of the building to which air is supplied, or from which air is exhausted, the quantity of air supplied or exhausted per minute, and the revolutions of the fan under normal load. Marking for each plate shall be submitted to the Architect for approval. Fan Requirements: The fans must operate practically noiselessly under maximum pressure and maximum revolutions. The capacities of fans shall be as noted on heating diagrams. Foundations : Foundations for fans shall be continuous under fans and motor pedestals. Fans shall be provided with large size angle iron bases only, and shall be bolted to floors with insulating material consisting of two (2) one (1) inch layers of cork between base and floor to take up any vibration. Furnish a wood frame on top of each cork base. 231 Motors: Each fan shall be driven by a direct connected, direct current 240 volt electric motor of the shunt wound, open, multipolar type, with con- troller of ample size to operate its respective machine at its proper full load and speed as hereinbefore specified under "Motors and Ac- cessories." The motors, controllers and all appurtenances and equipment re- quired by same shall be furnished, the whole to be as specified under "Motors and Accessories." Ducts: Ducts shall be made of galvanized iron. All suspended ducts shall be made with double lock joints and shall be made air tight. Joints shall be soldered if necessary in ordei to make them tight. They shall be made with galvanized angle iron frames and hangers and shall be firmly secured in place. If of four (4) square feet area or greater, they shall be of No. 22 gauge iron and if of less than four (4) square feet area, of No. 24 gauge. In ad- dition, all suspended ducts of more than 256 square inches area shali be thoroughly stiffened with galvanized one (1) inch angle irons placed not more than four (4) feet apart. All ducts in connection with kitchens shall be of not less than No. 14 gauge. All changes in direction shall be along easy curves, the radius measured from center of duct to be in no case less than twice the diam- eter of the duct, if circular, nor less than twice the diameter of a cir- cular duct having an equivalent cross sectionel area, if rectangular. Connections to outlets shall be made through trumpet shaped mouth pieces flared out as much as the construction will permit. All branches shall be taken out at an angle not to exceed 45 degrees with line of air flow. Provide in each fresh air and exhaust duct an air tight damper located near fan so that the fresh air to or exhaust from any portion of the building can be shut off completely ; also mark each duct neatly in a conspicuous place to or from what portion of the building it sup- plies or exhausts air. Ducts at entrances and at other points delivering fresh air below radiators shall be made of proper size to deliver air directly beneath 232 the entire radiators. Duet work shall terminate just below the floor line and all openings in floor around duct work and radiator connec- tions shall be properly filled in with tile or concrete. Hoods in Kitchens: Furnish and install hoods in kitchens where so indicated on dia- grams. They shall be made of heavy black iron, properly reinforced, and connected with exhaust ducts. Ventilation of the Equitable Company Space: An exhaust ventilating system shall be installed in the Equitable Company space in the entire 4th and 5th stories, the air being taken from points east and west of the elevators in each story, as shown on diagrams, with the exhaust fan located in the 4th story and discharg- ing into the vent shaft. The discharge shall be continued the full height of the building with discharge above roof, similar to hoods for other exhaust fans. Canvas Ducts: The connection of each fresh air fan to main outlet shall be made of No. 6 duck, two (2) feet long, having substantial iron frame at each end, bolted securely in place with air tight gaskets at all joints. These ducts shall be well sized and painted as directed. Openings in Ducts: Provide openings not less than ten (10) inches square in sus- pended ducts larger than 12x12 inches with air-tight sliding doors, located as follows: One (1) at every curve on each main pressure and exhaust duct, and one (1) at each junction of main branch with main supply. Air Splits: At every junction of a fresh air branch duct to a main or sub-main, an air split hinged at junction shall be furnished in place and at every junction of an exhaust branch duct to a main or sub-main a deflector hinged at junction shall be furnished. Where ducts are concealed, these adjusting splits and deflectors must be arranged in branches be- hind inlets and outlets in easily accessible locations; where exposed, they must be provided with solid rod connections to outside of duct with handles and lock nuts to lock the splits in place after adjustment. 233 Air splits and deflectors shall be of a design which, will permit variation in the amount of air passing through the branch duct without presenting an obstruction to the passage of air in main duct. Design of air splits and deflectors shall be submitted to the Architect for approval. All air splits and deflectors shall be made of heavy galvanized iron. Inlets and Outlets: Fresh air inlets and exhaust outlets where required in toilet rooms and janitors' closets, first story vestibules, and in certain portions of the basement and sub-basement will be furnished and installed as spec- ified under "Ornamental Iron and Bronze Work." Furnish and in- stall all other inlets and outlets. Inlets in the sub-sub-basement, including all portions of the Me- chanical Plant, shall be provided with beaded edges and all exhaust outlets in the Mechanical Plant shall be screened outlets with beaded edges, except where grilles are specifically mentioned. These shall be register faces (with louvres) of a design approved by the Architect. Register faces shall be finished to match the hard- ware. Inlet and outlet connections shall be made air tight. Each fresh air inlet shall be provided with a diffuser to equally distribute the air across the full area of the inlet. Details shall be submitted to the Architect for approval. The quantities of air supplied or exhausted through inlets and outlets shall be in accordance with a schedule provided at a later date by the Architect. Measurements of the air supplied or exhausted will be made by the Architect at the points of entrance to and exit from the various rooms, and if the results obtained are not in accord- ance with the schedule, such changes and adjustments must be made in the ventilating equipment as may be required. Ventilation of Vaults: The Safety Deposit Vault and the Silver and Trunk Vault shall be provided with ventilation. The duct work inside the Safety Deposit Vault will be provided by the Owners. 234 Duct shall enter this vault through the emergency door. The sec- tion passing through the door shall he made of aluminum and installed in such a manner that it can easily he removed to allow closing of door and when in place joints shall be air tight. Confer with the Owners and so arrange the work as to make the installation complete in every respect. Complete details of the in- stallation shall be submitted to the Architect for approval. Insulation of Boiler Room and Pump Room Ceilings: A vitrified asbestos ceiling will be installed in the Boiler Room and Pump Room, leaving a clear space of approximately eight (8) inches between tile ceiling and top of asbestos ceiling. Air will be admitted to this space through grilles. Make connection from this air space into the exhaust systems from the Boiler Room and Pump Room. Exercise great care in all work in connection with the ceiling and see to it that all work is made air tight. Lf it is necessary to provide any sleeves for ducts or pipes through this space, the sleeves shall be of sufficient length to extend entirely through this space to the ceiling below. Sleeves Through Floors and Walls: In all cases where ducts pass through floors and openings for same are not framed with steel beams or channels, the Contractor shall fur- nish and install sleeves made of cast iron not less than i inch thick, or of 3/16-inch steel properly stiffened with angle irons, and made proper length to extend through floor, but no edges shall be exposed. Where ducts pass through main building walls provide similar sleeves. Full details of these sleeves must be submitted to the Architect for approval. In every case sleeves shall be installed at the time the floor or wall is built and shall be properly secured in place. Covering: The fresh air intakes shall be covered with £-inch thick air cell blocks put on single and covered with 8-ounce canvas. These blocks shall be securely fastened to the intakes and guaranteed against con- densation. In addition, that portion of the fresh air ducts exposed in the 895 Boiler and Engine Rooms shall be covered with two (2) layers of ^-inch thick air cell sheets put on single, covered with 8-ounce canvas. These sheets shall be supported on f-inch angle irons attached to the ducts spaced every twenty-four (24) inches. Angle irons shall have | inch holes at outside edge spaced every twelve (12) inches for wiring sheets in place. Special care must be taken in the construction of ducts and appli- cation of covering to insure straight lines after covering is applied. Temperature Regulation : Temperature regulation shall be installed for the ventilation sys- tem. Compressed air shall be taken from the air receivers specified under "Ejectors," connection being made through pressure reducing valve. This system shall be complete with all necessary parts, tanks, valves, piping, etc., and shall be erected in a neat and workmanlike manner. All air pipes shall be wrought pipe galvanized, and shall be concealed as much as possible. Thermostats shall be automatic in uction and must govern within a variation of two (2) degrees. If it is necessary to install additional filters in the air supply to this system, or to provide cooling coils to remove moisture from the air same shall be furnished and installed complete in every respect in a manner approved by the Architect. The finish, style and location of thermostats shall be approved by the Architect. Before this apparatus is installed, a layout of the same shall be submitted to the Architect for approval. Test and Acceptance: When the ventilating plant is ready to be turned over, and before acceptance of same, the Contractor (after all ducts are properly ad- justed for carrying capacities) shall subject the plant, at its own expense, to a continuous run of six (G) hours under full loads, and it shall perform all the duties hereinbefore specified, and the quan- tities of air shall be as hereinbefore specified. This test shall be made under the direction of the Architect. Adjustment: Before acceptance of the plant, the Contractor shall enter into a written agreement with the Owners to properly clean out, adjust and 236 put in first-class condition at its own expense, all valves, thermostats, air splits and deflectors the winter next following the acceptance. Unit Prices: Name one price only for any additions to or deductions from the contract for the respective materials named below ; said price to obtain until tho completion of this work and its acceptance by the Architects : 36" pipe installed, including fittings, per foot. 30" pipe installed, including fittings, per foot. 24" pipe installed, including fittings, per foot. 20" pipe installed, including fittings, per foot. 18" pipe installed, including fittings, per foot. 16" pipe installed, including fittings, per foot. 14" pipe installed, including fittings, per foot. 12" pipe installed, including fittings, per foot. 10" pipe installed, including fittings, per foot. 8" pipe installed, including fittings, per foot. 6" pipe installed, including fittings, per foot. 5" pipe installed, including fittings, per foot. 4" pipe installed, including fittings, per foot. 3" pipe installed, including fittings, per foot. 2+/' pipe installed, including fittings, per foot. 2" pipe installed, including fittings, per foot. 1$" pipe installed, including fittings, per foot. 1£" pipe installed, including fittings, per foot. 1" pipe installed, including fittings, per foot. f" pipe installed, including fittings, per foot. by the A ... $..,. rchuects : ... $.., ... $... (• ■ ... $... ... $.... • • • • . •!• • ... $... ... $... ..'••••!•• ... $.... I. . . .!. .'. . ... $... ... $... ...$..,. la • • •• •!■ • ... $... ... $... ... $... ... $... !•' ... $... i. • ...$... ...... .i. . ...$... ...$.., ... $... <«•■••••• 237 4" pipe installed, including fittings and painting, per foot $. 3" pipe installed, including fittings and painting, per foot $. 2|" pipe installed, including fittings and painting, per foot $. 2" pipe installed, including fittings and painting, per foot $ . 1$" pipe installed, including fittings and painting, per foot $ . H" pipe installed, including fittings and painting, per foot , $. 1" pipe installed, including fittings and painting, per foot $ . |" pipe installed, including fittings and paintings, per foot $. 36" pipe, including fittings, magnesia or moulded asbestos covering, and painting, installed, per foot $. 30" pipe, including fittings, magnesia or moulded asbestos covering, and painting, installed, per foot $. 24" pipe, including fittings, magnesia or moulded asbestos covering, and painting, installed, per foot $. 20" pipe, including fittings, magnesia or moulded asbestos covering, and painting, installed, per foot $. 18" pipe, including fittings, magnesia or moulded aabestos covering, and painting, installed, per foot $. 16" pipe, including fittings, magnesia or moulded asbestos covering, and painting, installed, per foot $. 14" pipe, including fittings, magnesia or moulded asbestos covering, and painting, installed, per foot ...,$. 12" pipe, including fittings, magnesia or moulded asbestos covering, and painting, installed, per foot $. 10" pipe, including fittings, magnesia or moulded asbestos covering, and painting, installed, per foot $. 8" pipe, including fittings, magnesia or moulded asbestos covering, and painting, installed, per foot $. 238 6" pipe, including fittings, magnesia or moulded asbestos covering, and painting, installed, per foot $ 5" pipe, including fittings, magnesia or moulded asbestos covering, and painting, installed, per foot $ 4" pipe, including fittings, magnesia or moulded asbestos covering, and painting, installed, per foot $ 3" pipe, including fittings, magnesia or moulded asbestos covering, and painting, installed, per foot $ 2V pipe, including fittings, magnesia or moulded asbestos covering, and painting, installed, per foot $ 2" pipe, including fittings, magnesia or moulded asbestos covering, and painting, installed, per foot $ IV' pipe, including fittings, magnesia or moulded asbestos covering, and painting, installed, per foot $ H" pip e » including fittings, magnesia or moulded asbestos covering, and painting, installed, per foot $ 1" pipe, including fittings, magnesia or moulded asbestos covering, and painting, installed, per foot $ 4" pipe, including fittings, wool felt covering and painting, installed, per foot $ 3" pipe, including fittings, wool felt covering and painting, installed, per foot $ 1\" pipe, including fittings, wool felt covering and painting, installed, per foot $ 2" pipe, including fittings, wool felt covering and painting, installed, per foot $. \\" pipe, including fittings, wool felt covering and painting, installed, per foot $ 1" pipe, including fittings, wool felt covering and painting, installed, per foot $ — . \" pipe, including fittings, wool felt covering and painting, installed, per foot $ Radiation as follows, including radiator, freight, drayage, all han- dling necessary to set radiator in place in the building, ready for in- stallation, and also including painting, per square foot: • • • 239 45" high $ 20" high $. 44" high $ 18" high $. 38" high $ 16" high $. 32" high $ 14" high $. 26" high $ 13" high $ 22" high $ Radiator connections of the following sizes, including correspond- ing return connections, painting connections, etc., each: 14" $ W $ 1" $ !" $....'....'.... Return valves, each $ Disconnecting radiators after installation, each. . . $ Valves of the following sizes, each: 20" $ 6" IS" $ 5" $. 16" $ 4" $. 14" $ 3" $. 12" $ 2$" $. 10" $ 2" $. 8" $ U" $. Breaking radiators and reconnecting same, each.. $. Radiator valves of the following sizes, each: li" •• li" 1" •■• if/ r Installation and removal of radiators used for tem- porary heating purposes, each $ Radiation in coils, including coil, freight, drayage, labor, all handling necessary to set coil in place in the building ready for connection, and also including the necessary hangers, painting, etc., per square foot $ Suspended galvanized iron ducts, per lb., includ- ing angle iron stiff eners, hangers, etc $ Covering for ducts, per square foot, installed , $ Excavation, per cubic yard ....$.., . . Concrete, per cubic yard, installed $. Removal of earth, per cubic yard ...$... STACK AND CEHJNG IJNTNG. In General: Furnish all labor and materials to execute, install and complete the Stack and Ceiling Lining in accordance with the accompanying drawings and as required by these specifications. Scope of tlie Work: The smoke stack and the necessary angles for supporting the lin- ing inside the stack, will be furnished and set as specified under "Structural Steel" and "Erection of Steel." Line the entire inside of the smoke stack and the entire ceiling of the Boiler Room and Pump Room with Vitrified Asbestos Lining not less than two (2) inches thick. Furnish all necessary fastenings to secure the stack lining in place, supported on angle irons ; all joints shall be made perfectly tight with specially treated Asbestos Cement. 241 Also furnish all metal angles, strips, etc., for supporting the ceil- ing lining. This ceiling lining shall be a suspended ceiling installed so as to leave a clear space of approximately eight (8) inches between the tile ceiling and top of asbestos ceiling. This space will be used for the circulation of air and proper means shall be provided for supporting lining leaving this air space as free as possible. Where drop beams and girders extend below suspended ceiling, the asbestos lining shall be carried around the sides and bottom of beams and gir- ders next to the fire proofing. At certain points, pipes, conduits, ducts, etc, will extend from the floor above through the ceiling lining ; at all points where ceiling lining is penetrated the opening shall be filled with asbestos cement in such a manner as to make a close fit around all pipes, conduits, ducts, angles, etc.; all joints shall be made perfectly tight. Plaster the entire ceil- ing of the Boiler Room and Pump Room one-half (i) inch thick with Asbestos and Portland Cement Plaster, and the entire installation when completed shall be air tight. Teat: The vitrified asbestos lining must show under test that it can be heated to a temperature of 1,000 degrees Fahrenheit and immediately immersed in cold water without causing any change in its construc- tion. Unit Prices: Name one price only for any additions to or deductions from this contract for the material named below, said price to obtain until the completion and acceptance by the Architects of all work included herein : Vitrified asbestos stack lining, installed, per square foot , $ Vitrified asbestos ceiling lining, installed, per square foot $ 242 ELECTRIC WIRING. In General: Furnish all labor and materials to execute, install and complete the Electric Wiring and Switchboard Work in accordance with the accompanying drawings and as required by this specification. Installation of Work: The Contractor shall examine the Architectural, Heating, Plumb- ing and Structural Steel drawings and if any discrepancies occur be- tween them which in any way affect the work, or if any details of construction interfere with the work, report the same to the Architect and obtain written instructions for changes necessary in the work. In all- cases where heat and vent ducts prevent locating of outlets in ceil- ingj the Contractor shall provide a special type of approved strap hanger for the proper support of conduit and boxes beneath the ducts, or install pipe thimble to allow conduits to pass through the duct, as approved by the Architect. Any cutting and patching of floors or walls made necessary by the neglect of the Contractor to provide necessary openings through same shall be done by it at its expense. Painting: Cabinet and other iron work, not including exposed conduits, in- stalled under these specifications, shall be painted two (2) coats of black insulating paint, one (1) coat before delivery at the building and one (1) coat after installation and after all pipes and wires are con- nected complete. Exposed conduits shall be painted with two coats of lead and oil, last coat tinted as directed. Insulation Resistance: After wiring is complete, it shall be tested in sections, and all defects shall be made good before current is turned on to the building. The Contractor shall make all tests in the presence of the Architect to show that insulation resistance meets Underwriters' requirements, and shall provide all apparatus required to make such tests. Inspection: All work and material shall be strictly first-class in every particu- lar, and shall be installed in accordance with the rules and require- 243 ments of the Electrical Inspection Department of the City of New York, and the rules and regulations of the Board of Underwriters, anything in these specifications to the contrary notwithstanding. This shall not be construed as relieving the Contractor from com- plying with any requirement of the plans and specifications, which may be in excess of the requirements of the hereinabove mentioned rules, and not contrary to same; nor for any special construction for which the Architect obtains special permission from the Inspection Department, although same may conflict with the letter of the rules. The Contractor shall furnish, at his own cost and expense, a per- mit and certificate of acceptance for all electrical work installed un- der these specifications, including inspection fee for all motors, ex- cept for elevators and elevator pumps, installed in the building, and the final inspection and certificate of the Architect will not be made or issued until the Inspection Department's certificate is delivered to him. Guarantee : All material and workmanship shall be of the best, and must meet with the approval of the Architect, who reserves the right to reject any material not in accordance with these specifications, either be'fore or after installation. The Contractor shall be responsible for all work put in under these specifications. He shall make good, repair or replace, at his own cost and expense, as may be necessary, any defective work, material or part which may show itself within one (1) year after date of final certificate, if, in the opinion of the Architects, said defect is due to imperfection in material or workmanship, as specified, and not to care- lessness or improper operation. Plans : To accompany these specifications there will be a set of plans, showing the arrangement of the building, electric outlets, cut-out cab- inets, wire shifts, etc. The plans, such writings, interlineations, fig- ures and details as may be upon them shall be considered as part of and illustrating these specifications. The drawings and specifications are not intended to show all de- tails, and the Architect will not be responsible for the absence of any 244 details which the Contractor shall require, or any special construction which may he found necessary, as the work progresses. The Con- tractor must satisfy himself on all points in regard to the work, and obtain all necessary information before submitting his proposal, and shall include in his price a sum sufficient to cover same. No extras will be allowed for any work or material, unless same can be clearly shown to be an addition beyond the intent and contemplation of the drawings or specifications, and necessary to complete the work. Scope of the Work: The Contractor shall furnish and install in a good and substantial manner the generator leads, main bus bars, all switchboards, all neces- sary switches, fuses, conduits, telephone and telegraph conduits, pull boxes, junction and outlet boxes, distributing centers, cut-out cabinets, complete with panel boards, all necessary feeders, wire, drop cords, etc., complete, furnishing all material and labor necessary to install all wiring for power and lights complete from the generators to all out- lets shown on the plans or otherwise hereinafter specified. Working Drawings: The Contractor must submit drawings to scale, showing the lay- out of generator leads, switchboard, complete feeder riser diagram, lines of conduit, cables, wires and sizes of same, junction and cut-out boxes, copper sizes, the current carried and the number of feet in the run; also drawings covering all changes that may be ordered by the Architect during the progress of the work. Riser diagram shall show main feeders, all cut-out cabinets with number of lights fed from each, number of circuits, etc., pull boxes, all distributing centers with capacity of all motor feeders indicated com-, plete. Wiring Diagrams Shall Be Drawn Up at £" Scale. It is recom- mended that conduit runs be laid out in pencil on these diagrams, which will permit of readily changing locations of switches and grouping of outlets. Prints from these preliminary plans are to be submitted for examination by the Architect. After checking, one set will be returned with corrections, after which the drawings are to be revised and com- pleted in ink and four sets of prints sent in for approval. Complete working drawings and detailed wiring diagram of the switchboard shall be submitted to the Architect for approval. 245 Complete working drawings showing method of cable suspension in wire shaft shall be submitted to the Architect for approval. Each drawing must be marked with the name of the building, with a serial number, as also with the number of the Architect's drawing from which it is made. Four prints of each drawing must be sub- mitted. Each drawing must be approved in writing by the Architect be- fore any work covered by same is begun by the Contractor. The Architect's approval, however, shall not relieve the Contractor of re- sponsibility for errors, as the Architect's approval of the drawing is only general, and is intended as an assistance to the Contractor and not to serve as a check, and does not in any way relieve the Contractor from the necessity of furnishing the materials and performing the work as required by the drawings and specifications. The cost of all these drawings shall be included in the contract price. Samples : Not less than thirty days before purchasing such material, the Contractor shall submit to the Architect for approval the following. Material shall not be ordered until approval of samples or makes. 1. Sample of 200-ampere knife switch. 2. Rubber covered conductor. 3. Varnished cambric conductor. 4. Cut-out cabinet. 5. Ceiling outlet box, with hanger and fixture stud. 6. Receptacle outlet box. 7. Plug and receptacle. 8. Wall switch. 9. Grip for supporting riser cables. 10. Floor box, complete with fittings. 11. Cartridge and link fuses. Wiring: Feeders for the entire lighting system shall be run on the three- wire 120-240 volt, direct current system. The neutral conductor shall have the same cross-sectional area as either outside conductor, except 246 as specified under "Generator Leads." All cut-out cabinets shall be arranged for three-wire mains and two-wire branch circuits. Three- wire branch circuits will not be permitted. All power circuits and wiring shall be arranged for the direct current 240-volt two-wire system. All lamps on switchboard shall be fed from the low tension storage battery. All wires of a circuit may be run in the same conduit, but the wires of no more than one circuit shall be run in the same conduit, ex- cept for public lighting, where two circuits may be run in the same conduit. No tenant circuit conduit shall be less than §" from cutout closet to switch outlet and thence to the first ceiling outlet on each leg of the circuit. Main feeder conduits passing through floor structure at offsets shall not be larger than two-inch, and where the feeder capacity re- quires it, duplicate feeders shall be run. Feeder cables shall not be larger than 1,000,000 C. M. All main feeders shall be without reduction in cross-section to the farthest cutout cabinet on that feeder. Elevator feeder conduits shall be run up in spaces back of the ele- vators, where they will avoid counterweights, etc. All conduits for bracket lights and wall receptacle outlets shall be run from the floor up to the outlet. All circuit conduits from cut-out cabinets to switch outlets in ten- ant offices and suites shall be run in the floor of the story in which the fights supplied by the respective circuits occur, and not in the floor above. Wall switches for the control of ceiling lights in tenant offices and suites shall in general be located near corridor doors and on col- umns; all switches, however, to be located subject to the approval of the Architect. Where office space is divided into separate rooms, run the f-inch circuit conduit into the bottom of the switch box. Run conduit down to floor and across to feed the various wall outlets. Run a f-inch con- duit up to first ceiling outlet and extend a £-inch conduit to second outlet. Where space is undivided the same method is to be followed as closely as consistent with lack of division partitions. 247 Dossert joints shall be soldered. Where running threads would otherwise occur, Erickson coup- lings, or other similar device approved by the Architect, shall be used. Loss of Potential: It is intended that the sizes of all lighting feeders shall be pro- portioned on the basis that all lights shown on plans or herein specified are burning, and when thus loaded the wires shall be of ample size, so that the loss of potential between the main switchboard and any cut-out cabinet will not exceed four volts, measured across the outside legs of the three-wire system. The loss of potential on any branch circuit from cut-out cabinet to farthest lamp, with circuit fully loaded (1,320 watts), shall not exceed 1J volts. The ampere capacity of all power feeders shall be based upon the horse power ratings hereinafter specified, but all feeders shall be of ample size, so that when fully loaded the loss of potential shall in no case exceed ten (10) volts from the service to any motor. Generator Leads and Bus System: All generators shall be so connected as to feed into a double bus system, composed of lead covered cable run in conduit laid under the engine room floor. Generator leads shall run from each generator to a remote-control circuit breaker panel located as near to generator as consistent with accessibility. From this two sets of connections shall be run to the light and power busses, respectively. At each point where connections from contactor panels join main bus cables, junc- tion box shall be provided, set flush in floor and provided with outer and inner iron covers, the latter fitted with rubber gasket and bolted down. All conduit joints shall be made up with red or white lead and terminals sealed with asphaltuin or other approved insulating com- pound. The entire under-floor system shall be so constructed as to be absolutely water-tight in a manner acceptable to the Architect. Generator leads shall be of such size that when generators are operating at 50 per cent, overload, carrying capacities shall be in ac- cordance with Underwriters' requirements. Each set of bus cables shall be of a capacity equal to 75 per cent, of total full-load rating of the plant. Equalizer legs shall each have a carrying capacity equal to one-half that of the corresponding outer legs. Shunt field leads shall 248 not be less than No. 6 B. & S. gauge. Ammeter shunt leads shall be cali- brated by the instrument manufacturer with the ammeters and their respective shunts. After calibration their lengths shall not be altered by cutting or splicing, any surplus length being coiled up back of the board. Shunts shall be mounted in generator pits and protected by cages of galvanized iron wire not smaller than No. 8, 1-inch mesh. Feeder boards shall be located where shown on plans, each to serve lighting feeders running up the adjacent wire shaft. Positive and negative feeders for these boards shall be connected to main bus cables by lead covered cable in the same manner as previously de- scribed. They are to be connected to the main busses at the nearest junction boxes in floor. A similar method is to be followed in the case of feeders running to each elevator distributing center and at the sub-basement distributing center Each neutral leg shall have a carrying capacity of not less than 25 per cent, of its outer legs. All of the neutral legs shall be brought to a common neutral bus on main switchboard. Balancer leads shall be run directly to the switchboard. Where necessary to place fuses in engine room floor junction boxes, they shall be so enclosed that the blowing of one fuse or set of fuses will in no way affect the operation of other feeders. Neutral feeder connections shall not be fused. In making connections between lead-covered cables and lugs, tap- ing and cable insulation shall be kept back \ inch from lugs. Switchboards : The Contractor shall furnish and install, where shown on plans, a main switchboard of polished pink Tennessee marble not less than 2 inches thick and free from faults. Panels shall stand approximately ninety (90) inches high and no panel shall be wider than thirty (30) inches. Board shall be located where shown on plans, not less than six feet from wall in rear, and extend down to the floor line resting on a 6 inch, 8 pound channel iron base, securely grouted in place with best quality cement, and shall be properly secured to a self-supporting frame of 2 inch by 3 inch japanned angle iron with copper-plated bolts and countersunk washers, or acorn nuts. Frame shall have corners properly braced with gusset plates. The space between the ends of the board and the wall shall be closed by an electro-bronze basket work 249 grill of flat ribbon wire not less than f inch by 3/32 inch crtfss section and not more than 1 inch mesh. In this grill shall be a door not less than two feet by six feet, six inches, fitted with Yale lock and three keys. On this main switchboard shall be provided all the required in- struments, switches and appliances for the control of the main gen- erators, balancers and low tension sets. Each of the six generator panels shall be equipped with an am- meter of full scale reading equal to 200 per cent, of normal full load rating of its generator; a watthour meter of capacity equalto normal full load rating of its generator; a flush mounting bullseye pilot lamp socket to receive standard 16 c. p. carbon filament lamp; controlling switch for motor-operated rheostat; controlling switch for each re- mote-control generator circuit breaker, provided with red and green indicator lamps connected so as to show whether breaker is opened or closed. For each balancer set there shall be provided a panel on which is to be mounted a rear-of -board starting rheostat of a type (details to be submitted for approval) which will automatically limit acceleration current to not more than 25 per cent, more than normal; one center- zero neutral ammeter of capacity equal to 150 per cent, of normal bal- ancer rating; necessary single and double pole knife switches of a capacity equal to normal neutral rating of the balancer set; one or more field rheostats (if required by scheme of connections adopted) ; series relay in neutral, connected to bell and annunciator in engineer's office, to ring on overload. There shall also be provided on main board a 10-inch secondary clock with trim to match meters, clock to be of same type as other sec- ondary clocks ; two 300-volt voltmeters, together with necessary connec- tions and approved voltmeter switches or plugging scheme to read the voltage on light busses, power busses, any generator independently, between neutral and either positive or negative leads to either com- pensator set, and voltage to ground on positive and negative light and power busses. There shall be provided a low-tension panel for each small motor- generator set on which shall be mounted a rear-of-board starting rheo- stat ; a D. P. S. T. fused main motor switch ; an ammeter for generator 250 of capacity equal to 150 per cent, of rated capacity of same; switch- board mounting field rheostat ; main fused generator switch. For both panels and mounted on one, shall be a 30-volt voltmeter, connected with voltmeter plug and receptacle on each low-tension panel. On one of the low tension panels shall be provided battery charg- ing equipment as follows : D. P. S. T. main switch ; rear-of -board type charging rheostat; overload and reverse current single pole circuit breaker; center-zero ammeter with full scale reading in each direction equal to 125 per cent, of normal charging rate; 3-volt voltmeter, with switch to connect same to any cell of battery ; receptacle to connect 30- volt voltmeter mentioned above across entire battery ; D. P. S. T. fused discharge switch. Reverse current relay on circuit breaker shall be so arranged that it may be readily cut out, if desired. Fuse connec- tion for switchboard lights shall also be provided. At each main generator shall be located where approved by the Architect a 3-inch pink Tennessee marble panel on angle iron frame- work on which shall be mounted two double-pole, two-coil, overload and reverse current release, rigid arm, remote controlled, solenoid operated circuit-breaker of a capacity equal to 150 per cent, of normal rating of its generator and equipped with five-second definite time limit tripping mechanism. One is connected to light bus and other to power bus. Emergency means shall be provided for hand operation. Breaker shall be so connected to generator that all current generated by the machine shall pass through it. Contacts shall be provided for opening the equalizer connection when the breaker trips. Grill shall be pro- vided entirely to protect copper work on back of panels. At locations shown on plans, four feeder boards shall be located, one for the lighting feeders up each wire shaft. They shall be of the same form of construction and material as specified for main control board and be provided with a 3 P. S. T. knife switch for each feeder fed from them. Each circuit shall have removable links in the bus bar construction so that shunts for portable meters may be inserted in positive, negative and neutral leads. Grill work and doors, as pre- viously described shall be placed at the sides or rear of each board. All distributing centers shall be built up on oil finished Monson, Maine, slate, \\ inch thick, mounted upon a japanned angle iron frame of similar construction as specified for main switchboard. 251 All switches, bus bars and connections shall be of a capacity and construction as specified for similar work on switchboard. Each dis- tributing center controlling more than two (2) motors shall be pro- vided with unfused main switch of the total capacity of the power fed from its respective center. Each motor circuit, except for the elevator motors, shall be provided with a switch and link fuses mounted on face of board and all enclosed in a sheet metal cabinet with doors, hinges and nickel-plated vault handles, similar to those specified under "Cutout Cabinets." The whole shall be carefully secured in place on a japanned angle iron frame. Each switch shall be provided with neat fibre name plate. In place of switch and fuses, each elevator motor circuit shall be provided with one overload release, double pole, double arm, with in- dependently operating arms, laminated contact, pressure carbon break circuit breaker. Normal capacity of circuit breaker to be 150 amperes with tripping range of 110 to 300 amperes. All bus-bar work shall be on rear of panel. Sub-sub-basement motors shall be fed from sub-basement center. A 600-ampere, 240-volt watthour meter shall be furnished and in- stalled on each elevator distributing center, a 700-ampere meter on sub-basement distributing center, a 350-ampere meter on pent house distributing center No. 2 and a 40-ampere meter on laundry power panel. All circuits, switches and instruments shall be marked with neat copper name plates of approved design. List of names for circuits and switches will be furnished by the Architect. The main switchboard shall be equipped with continuous J-M Lino- lite, mounted m special switchboard reflector, run the full length of the board. The outside of the reflector trough shall be finished to match the equipment on the board, as approved by the Architect. The re- flector shall be complete with tungsten Linolite lamps. An approved rotary snap switch shall be placed at the rear of the board, near the access door, and connected so as to control the lighting in this reflector. Linolite, switch indicator and other lamps essential to the operation of the switchboard shall be connected to the 24-volt battery circuit. There shall be furnished and installed on pink Tennessee marble panel, where approved, in Chief Engineer 's office, the following graphic recording meters : 252 Oile voltmeter, scaled 180-280. Three ammeters, scaled 0-3500, one connected to each 600 K. W. generator. Two ammeters, scaled 0-1800, connected to 300 K. W. Generators. One ammeter, scaled 0-1200, connected to 200 K. W. generator. The graphic meters shall be of a type having a uniformly divided scale and a pen motion perpendicular to the direction of paper travel. In addition to the scale marking on the paper, meters shall be provided with a fixed scale and pointer on the pen arm. The action shall be dead beat and accurate within 1 per cent, of full scale reading. Paper shall be fed at 2 inches per hour. Extra paper shall be furnished for six months' operation. It is to be understood that graphic meters are to be manufactured by Westinghouse Electric & Manufacturing Co., General Electric Co., Esterline Co., or equal, as approved by the Architect. The switchboards shall be built up at the factory complete, and when approved by the Architect shall be taken to the building and set up. Final approval will be given after the boards are installed and in successful operation. Attendant: A competent attendant must be furnished by the switchboard builder to take charge of the switchboard until the plant is in running order and ready to be turned over to the owner. He shall remain in charge and be responsible for the switchboard equipment until same has been accepted. He must be qualified and be required to give to the Chief Engineer all necessary and proper directions regarding the operation of the switchboard and other apparatus furnished by his company. Erection: Before each switchboard has been unboxed after delivery, the Con- tractor shall construct around its location a substantial partition of rough planks and joists at least as high as the board and provided with strong door with padlock. This space should be sufficiently large to give ample working space around the switchboard. Suitable cover- ing shall be arranged over this enclosure to protect the board from dirt and other objects which may be dropped in. This enclosure shall 253 be maintained until all construction work has been completed in the engine room and there is no further risk of damage to the switchboard. Instruments : All instruments mounted on the front of the board shall have metal parts finished with brushed copper finish. Ammeters and volt- meters shall be 7-inch, round pattern, glass face, uniform scale type. Wattmeters shall be of the shunt type (with separate shunts), with glass cases, three-wire (or two two-wire) for light; two-wire for power. All wattmeters shall have test links and fuses. After board is installed, all instruments shall be installed and cali- brated. Instruments shall be manufactured by one of the following makers : Westinghouse Electric & Manufacturing Co., General Electric Co., "Weston Electrical Instrument Co., Keystone Electrical Instrument Co., or other approved by the Architect. Circuit Breakers: Circuit breakers shall be of the laminated contact, pressure carbon break type. Current density and brush pressure shall be such as to warrant the breakers to operate at their full rated capacity by con- tinuously with temperature rise in any part not exceeding 20° C. above the surrounding air. They shall be manufactured by General Electric Co., Westinghouse Elec. & Mfg. Co. or Cutter Co. Bus-Bars and Connections: All bus-bars and connections shall be made from the best quality of hard drawn Lake Superior copper of 98% conductivity, mounted on rear of board. All bars and connections shall be built up of ^-inch laminations separated by copper ventilating spacers and the current density shall not exceed 800 amperes per square inch of cross section of conductor, nor 100 amperes per square inch of clamped contact surface for the full connected load. All connecting surfaces and contacts shall be perfectly tight over entire connection, and shall be machined down to an absolutely true surface; all contact surfaces shall be carefully cleaned. All switch studs and fuse studs shall be long enough so that bus-bars run ver- tically. 254 Provide brackets secured to angle iron frame, and insulated with black fiber or slate slabs where bus-bars rest in such a manner that no portion of the weight of bus-bars comes on switch or fuse studs; size of bars shall be shown on wiring diagram of board. Vertical bus bar work for mains and feeders shall be carried to the bottom and top of board and so arranged that no cable work need be brought back of panels. Switches on Board and Distributing Centers: All switches shall be made from the very best quality of cold rolled and hard drawn Lake Superior copper. All jaws, clips and blades shall be of sawed copper and must be in perfect alignment. All parts shall be machined, no cast parts to be used. All jaws, clips and studs shall be securely pinned aiid sweated into the base blocks. Switches with offset lugs will not be approved. All switches shall have draw-file finish. All switches shall be "ground in" with pumice stone and oil to insure good contact. No switch on board or distributing center shall be of a smaller capacity than one hundred (100) amperes. Sample switch shall be submitted to the Architect for approval. Carrying capacity of switches shall be based on 800 amperes per spare inch of cross section of conductor throughout, and fifty (50) amperes per square inch of sliding contact. Clamping nuts on switch studs shall lie of copper of 98 per cent conductivity. Fnses: Each switch on switchboards, unless otherwise specified, shall be provided with fuses on separate marble fuse panels extending across the main panel and supported on angle iron frame on the rear of the board. All fuses throughout the building, unless specifically stated to the contrary, up to and including 30 amperes capacity, shall be of the cartridge type provided with approved terminals and indicators. Fuses of over 30 ampere capacity shall be of the open link type. Type, make and sizes of fuses must be approved by the Architect. Suitable hori- zontal barriers shall be provided to prevent vapors from any blowing fuses reaching other fuses above. 255 Wire Shafts: There will be provided throughout the building wire shafts at loca- tions shown on plans in which the vertical mains and feeders supplying the various distributing centers and cut-out cabinets shall be run. All mains and feeders shall be run in conduits from the switchboard to all the outlets. All cables must be securely anchored with cable supports enclosed in sheet steel boxes at intervals of three or four floors as required by the rules of the National Board of Underwriters, and as directed by the Architect. These cable supports shall be of a make satisfactory to the Architect. All supports not shown on Structural Steel diagrams in these wire shafts shall be provided by the Contractor. No wood construction will be permitted. Detail drawings of this construction shall be submitted to the Architect for approval. Cutout Cabinets: There shall be a cut-out cabinet in each shaft on every floor where wire shaft opens, and additional cabinets as shown on plans, or as re- quired, of sufficient size to contain all cut-outs feeding the circuits on their respective floors and as otherwise specified. These cabinets shall be made of No. 10 U. S. gauge sheet steel, provided with suitable braces and having side, top and bottom wiring compartments not less than six inches wide. The slate shall be rubbed down with boiled linseed oil, giving a fine dull jet black surface free from blemishes. Slate for panel shall be 1 inch thick. Double panels shall be provided with a removable strip in the center, separating the two sections. This box shall be fitted with doors of heavy iron, complete with nickel-plated vault handle and piston bolts, and extending full height of panel. Doors shall be fitted with approved Yale cylinder locks and keys; all locks keyed alike. Cut-outs shall be of the panel board type, connections being made through machine copper strips; all strips for circuits shall be continu- ous from one side to the other. All cut-out cabinets in the building shall each be provided with an even number of circuits; each cabinet with not less than six extra 256 circuits over and above those required by lights shown on plans or called for in specifications. All panels in building shall be of the same make. The main bus- bars and branch copper bars shall be in no case less than I inch by \ inch, and shall be figured on a basis of 800 amperes per square inch of cross-sectional area and 12 amperes at 120 volts per branch circuit, counting the total number of branches on the panels, including spares. Double panels must be used where the top of the cabinet would otherwise be over 7 feet from floor when installed. Only rolled or drawn copper shall be used, copper castings will not be permitted in the construction. Each branch circuit shall be plainly numbered or suitably lettered as approved by the Architect. For each panel board there shall be provided a heavy polished glass and neat frame for holding same in which shall be placed a suitable typewritten directory and plan indicat- ing the location of lights fed over each circuit. All metal parts shall be well polished and lacquered. A Hubbell flush wall receptacle shall be set into the face of each panel for use in connection with Inspector's extension cord. Circuit fuses shall be of the cartridge type. Before beginning the manufacture of any of these cabinets or cut- outs, this Contractor shall first submit to the Architect, for his ap- proval, sample of switch and fuse terminals, together with all draw- ings or details that may be required. Conduits : All wires shall be run in conduits, which shall be of mild steel tube, sherardized or galvanized, especially selected with reference to uniformity of thickness and freedom from defects. Conduit shall be delivered at the building in not less than ten-foot lengths. The Con- tractor shall furnish samples of conduit to be used before ordering. The decision as to the quality of conduit furnished and the acceptance of same, or the approval of any standard make, shall be made by the Architect. Joints shall be made tight with standard galvanized couplings and corners turned with elbows or long radius bend in pipe. The ends of all conduits or elbows shall be cut square and reamed, 257 and all joints shall be brought to a shoulder. All conduits shall be put up first and wires pulled through after plaster is on. All conduits and fittings shall be earfully examined before being installed and all blistered and defective pieces shall be rejected. All conduits shall be concealed unless specified to the contrary, or otherwise shown on drawings. All conduits installed underground or in floors under which there is no excavation shall be put together with joints made up with white lead and tested as directed by the Architect, to show that they are airtight. Special care must be taken to run conduits from switchboard to ceiling along plumb-lines. Outlet Boxes: At each outlet an approved galvanized or sherardized pressed steel outlet box of the knockout type, of not less than No. 12 B. & S. gauge, shall be placed and securely fastened. Each box shall have threaded stud in the bottom to act as a fixture fastener. The conduits shall be fastened to these boxes with lock nuts and bushings, and all unused outlets or holes must be left sealed. There must be sufficient room for insulating joints, wires and bushings, and deep boxes must be installed where required by the type of fixture called for by the plans. All ceiling outlet boxes shall have a support independent of the conduits to same, this support to consist of pipe nipple fastened to the outlet boxes with lock nut and bushing and extending through the floor above with a "T" and cross-bar transmitting the weight to the floor arching. Boxes where gas outlets are shown shall be provided with a hole to allow for the reception of gas piping. All wall switches shall be provided with similar boxes. Care must be taken in placing these boxes so that fixtures will stand at right angles to the wall and hang plumb. Such boxes as are set in concrete slab shall be fitted with exten- sions to increase the depth of the box, so as to allow conduit to enter the side of the upper section, the object being to avoid pockets in the conduit in which moisture may collect. 258 Floor Outlet Boxes: The Contractor shall furnish and install water-tight floor boxes where shown on plans or as herein specified. Boxes shall be of cast iron, not less than £ inch thick, 4$ inches outside diameter and 3i inches net inside opening. All joints shall be made with white lead. Boxes shall have a machine finish brass top, not less than 3/16 inch thick, made watertight with rubber gaskets and provided with leveling ad- justment. Cover plates shall be set in a brass edge frame and floor boxes shall be set flush in floor in a neat and finished manner. Floor outlets for electric light shall be provided with plug and receptacle and bell nozzle. All floor boxes shall be of a make approved by the Architect. Floor outlets for telephones and other low tension service shall be provided with special elbow outlets as detailed in drawings. Switches: Ceiling and wall outlets shall be controlled by wall switches as herein specified. All wall switches, except as otherwise specified, shall be of "the flush push ten (10) ampere type, with face plate to match the hardware in the various rooms in which they are located, and of a make approved by the Architect. Switches shall be placed in gang boxes where directed. Single pole switches shall not be used to control circuits which supply more than 330 watts. All switches located in places accessible to the public must be of flush lock push type. Switches on columns shall be so placed as not to interfere with future partitions on column center or be separated from the lights which they control. "Wire: No wire smaller than No. 14 B. & S. gauge shall be used for light and power circuits and all wires larger than No. 10 B. & S. gauge must be stranded. "Wire shall be rubber covered, double braided, and shall conform strictly to all the requirements of the latest edition of the Electric Code of the National Board of Fire Underwriters, and the four chem- ical extractions and the ash test specified shall show not less than 20 per cent, of pure rubber gum. This Contractor shall submit samples for test upon request of the Architect, and the Architect reserves the 259 right to make any tests on samples of the wire delivered at the build- ing. A complete coil of wire is to be loaned for the insulation resist- ance test. All tests shall be made by a responsible and experienced laboratory engineer selected by the Architect, and shall conform in all respects to the Underwriters' Laboratories Specifications. All ex- pense incurred in making these tests shall be borne by the Contractor. All wire which is rejected by the Architect, on account of tests made during construction, shall be at once removed from the work by the Contractor. For all cables of No. 6 B. & S. gauge and larger sizes, double braided, varnished cambric covered cable may be used, in place of the rubber covered wire herein specified, subject to the approval of the local inspection departments. This varnished cambric cable shall be of the General Electric Company's standard make, or equal in the opinion of the Architect, and thickness of insulation shall not be less than called for in General Electric Company's bulletin No. 4787, for working pressure of 1,000 volts. Carrying capacities shall be figured on the same basis os rubber covered wire. Ends are to be sealed with "PB." or other approved waterproofing compound before being taped. All cables and wires installed underground or in floors under which there is no excavation shall be lead covered. The decision as to the quality of wire furnished and the accept- ance of same, or the approval of any standard make of wire, shall be made by the Architect. Fixtures : At all typical ceiling outlets the Contractor shall leave wire ter- minal extending not less than eight inches below the plaster so that wires may be run directly into socket without splice. Lamps : All lamps will be furnished and installed by the Owner. Engine Room Lights: The Contractor shall furnish and install at each 400-watt outlet in engine and boiler rooms an Adams-Bagnall G-63 pdfcelain enamel steel reflector, with stem, canopy and insulating joint complete, or 260 ! equal in the opinion of the Architect. Stem to be of a length approved by the Architect. Drop Cords: All outlets where drop cords are called for, as shown on plans and as otherwise specified, shall be provided by the Contractor with a drop cord of sufficient length to bring socket within six (6) feet of the floor, complete with Edison key socket (General Electric, Perkins, Pass & Seymour or Hubbell), rosette and cord adjuster. Cord shall be extra heavy braided. Receptacles and Plugs: For each baseboard and wall outlet other than bracket and switch outlets, the Contractor sball furnish and install, unless otherwise specified, flush receptacles and plugs complete with face plate finished to match the hardware of the various rooms in which they are located. Receptacles and plugs sball be of a make and type approved by the Arcbitect. All plug and receptacle outlets, except for show windows, shall be located just above the baseboard. Window outlets shall be located near the tops of show windows. The Contractor shall locate outlet so there will be no interference with pipe work, outlets being readily accessible. Receptacles in col- umn faces sball be placed at one side, so as not to interfere with future partitions, which will be run on column centers. Air Washer Lights: There shall be provided a drop cord at one side of each air washer, so placed that the light from same will be thrown through the window into the spray chamber. Elevator Lights: Run the necessary 120-volt lighting circuits to the top of travel of each bank of elevators, as approved by the Architect, to provide four lights capacity per car for the up and down elevator signal lamps on the various floors; also to provide current for a 1 H. P. elevator signal light motor generator for each bank of elevators. Telephone and Telegraph Conduits: Furnish and install a complete system of telephone and telegraph conduits as hereinafter specified, and provide a continuous race-way 261 from service entrance to outlets provided in every room in the build- ing for use of the telephone, telegraph and signal service wires. In- cluded in the drawings is a plan of the basement showing location of service rooms for telephone, telegraph, etc., distributing frames and boxes. Also, the conduit runs from this room to each wire shaft and the local distributing points. These services will enter the building on the Cedar street side approximately 125 feet east of the Broadway building line. There shall be provided two sets of 3" conduits, twelve per set, extending 8" beyond the Cedar street curb wall and 2' 6" below the street level. Each of these sets of conduits shall be arranged in two tiers of six each. Particular care must be taken in installing these conduits that the run from the curb wall to the north partitions of service rooms shall be as nearly straight as possible. There shall also be provided through the Pine street curb wall a sleeve of 3-inch inside diameter to provide entrance of future cables at each of the following points: 85 feet and 179 feet east of east curb line on Broadway. Wire shafts will be provided where shown on plans, same to ex- tend from basement ceiling through the thirty-sixth floor. From the telephone service room to a pull box located at the foot of each shaft shall be run three 3" conduits for the use of the New York Telephone Company and the same number from the telegraph and signal room to each shaft, for the use of other service companies. No bends of radius smaller than 36" shall be used in these con- duits. All necessary pull boxes, of sizes and shapes to meet the re- quirements of the telephone, telegraph and signal companies, shall be furnished and installed by the Contractor. These boxes shall be not less than 12" deep and placed so that their lower faces are flush with the suspended ceiling. At each offset in each low tension wire shaft, provide six 3" conduits running from the ceiling of one closet through the floor of the closet above, in the corresponding location. Referring to typical plan showing telephone conduit arrangement on floors from second to thirty-sixth, inclusive, there shall be run from each low tension closet to each of five exterior columns as shown a \\" telephone conduit to provide access to distributing box and a 1" con- duit for miscellaneous low tension wires, the latter terminating in No. 14 sheet steel box 3 inches high, 3 inches wide and 2 inches deep, so placed as to provide ready access to wire mould. Both of these outlets 262 shall be placed as close as possible to the side of the pier to avoid future partition. From the bottom of the telephone distributing box and the above-mentioned outlet box, run f" conduits down the column and terminate in standard receptacle outlet box fitted with metal plate (finished to match other hardware in the room) with bushed opening in center for wires. This box is to be placed immediately above the base. From the bottom of it run a §" conduit down to floor, bend at right angles to face of column and extend four or five inches in floor fill and cap, so that conduit will be concealed under finished floor and ready for future extension. Interior columns, where shown, shall each be provided with a re- ceptacle outlet box with cover (as described above and similarly located) for telephone wires and one for other low tension wires, placed on opposite sides of the same face of the column. Similarly located boxes on adjacent columns shall be interconnected by two runs of §" conduit, as shown, and each series connected to low tension closet by %" conduits, as shown on diagram. Care is to be taken to place outlet boxes far enough from center of column face to avoid possible parti- tions. Where low tension floor outlets are shown on plans, conduit from nearest outlet box shall terminate in special floor elbow shown on plans. The telephone company will furnish and install their distributing boxes, but the Contractor shall furnish and install No. 12 gauge sheet steel boxes set flush into columns where shown, and of such size as to accommodate the telephone company's equipment. Separate scale drawings shall be prepared showing the telephone and telegraph conduit work, locations of distributing and outlet boxes, etc., for each floor from basement to thirty-seventh, where any varia- tions occur ; that is, conduit plans need not be submitted for more than one floor where such floors are exact duplicates as regards corridors, etc. The typical conduit layout shown in the drawings is intended as a general guide to the Contractor in laying out this work and is subject to modification where required by changes in the architectural features. The Contractor shall submit his telephone and telegraph conduit plans to the various companies interested and shall obtain their writ- ten approval of the layout before beginning this part of the work. The Contractor shall also furnish and install from the second to 263 the thirty-sixth floors, inclusive, in each bay a 1" (inside dimensions) porcelain tube connecting corridor wire mould with picture mould in office or undivided rentable area. Also furnish a 5" conduit connection from telephone outlet on the outside of each vault running to nearest telephone distributing box. At the vault ends of these conduits near the doors, outlet boxes, cover plates, etc., shall be furnished and installed in accordance with the New York Telephone Company's specifications for portable systems. All free ends of all of the above conduits shall terminate in bush- ings and conduits shall be fastened to outlet boxes with lock nuts and bushings. All conduits shall be reamed at both ends to remove all burrs. Intercommunicating Telephones: Furnish and install complete an intercommunicating telephone system connecting to stations hereinafter specified or shown on the plans. The system is to be such that any station can communicate with any other station by use of a private exchange and operator, located in superintendent's office, and it shall be possible for as many separate conversations to take place at the same time as there are pairs of in- struments in the system. At the switchboard, connection shall be made to a New York Telephone Company line. The system is to be free from inductive disturbances and cross-talk, and is to be operated by two separate sets of dry batteries, one for the ringing circuit and the other for the talking circuit. Each station shall be provided with a wall mounting, non-flush metal telephone set, the exact locations of which shall be subject to approval of Architect. The design and workmanship in this equip- ment shall be of the best. All circuit contact points on keys and switch- hooks shall be of platinum. The sets shall be arranged for metallic circuit wiring. The operation of the sets shall be such that a connec- tion can be established between any station and the exchange by re- moving receiver from hook. All wiring between stations shall be run in standard telephone cable made by the manufacturer of the telephone equipment or recom- mended and guaranteed by him. All wires shall be twisted in pairs, each pair being distinguished by different colored insulations. All cable shall be run in conduit except where use is made of regular tele- phone wire shaft. When the wires are distributed to terminals in tele- 264 phone sets or telephone terminals they shall be neatly formed and laced with heavy waxed linen twine and boiled out in bees wax. No acid shall be used in making soldered connections. The batteries shall be of a make and number as recommended by the telephone manufacturer, considering the length of runs and number of stations in the system. Each elevator car will be provided with a telephone instrument. It shall be the duty of the Contractor to complete the necessary con- nections from these car telephones to the starters' stations, and ar- range the latter so that the starter may connect any car instrument in that bank with the private exchange. The starters' telephones will be set behind ornamental iron doors provided in place by the ornamental iron contractor. The locations of telephone stations shall be as follows: One in each Elevator Controller Room; One for each Elevator Starter; One in Janitor's Headquarters; One in Superintendent's Office; One in Chief Engineer's Office; One in House Mechanic's Quarters; One in Machine Room; One in Lounging Room ; One in Porter's Headquarters; One in Freight Entrance ; One on each floor in janitor's closet, from basement to 37th floor. In connection with each of these janitor's closet telephones, there shall be provided a 120-volt flash lamp outlet (located in corridor, where approved by the Architect), connected so that lamp will light when corresponding telephone station is called, and remain lighted until call is answered, regardless of whether or not the connection is continued at the switchboard. Answering call shall cause flash lamp to be extinguished. All intercommunicating telephone equipment shall be of a make and type approved by the Architect. 265 Clamp Socket: Furnish and install a porcelain clamp screw socket at each outlet where called for on drawings or otherwise specified. Sockets and cover shall be of a make approved by the Architect. Vault Wiring: The Contractor shall furnish and install the necessary wiring for lights in each vault as follows: From nearest cut-out cabinet run a 120-volt sub-feeder to a ^-inch sheet-steel circuit breaker box mounted where directed adjacent to vault door. This box and its contents shall be furnished and installed by the Contractor. Box shall be of an ample size to accommodate cir- cuit breaker, approximately 8^ inches deep by 10^ inches wide by 14 inches high. Door and trim will be furnished in place by the Con- tractor. In it place a 20 ampere ITE type EL, or equal, circuit breaker, double pole, plain overload, front connection, with special handle and slate base, as shown on Cutter Co.'s drawing No. 11954. All connec- tions on back of circuit breaker shall be countersunk and filled flush with insulating compound. Drill and tap back of box for four No. 14-20 standard machine screws for supporting slate panel so that same will be removable from the front. Provide rubber washers between slate panel and back of box to prevent cracking of slate. Panel shall be mounted with one inch clearance between bottom of panel and bot- tom of box. Extend sub-feeder from circuit breaker to receptacle and plug beside vault door, furnishing necessary flexible cable to connect with wiring inside of vault in a manner approved by the Architect. All wiring within vaults will be furnished and installed by the Vault Contractor. Burglar Alarm Conduits: Furnish and install from telephone and telegraph room a f-inch conduit to an outlet box near each door of each vault in a manner ap- proved by the Architect. This conduit is to be used for installation of burglar protection service wires to be installed under future con- tract. 266 Motor Generators: The Contractor shall furnish and install in engine room, where shown on plans, two 500-watt, 230-volt primary, 30-volt secondary motor generators (motor and generator separate, but on common bed plate), operating at speed of approximately 1,600 E. P. M. These shall be set on foundations similar to those provided for the balancer sets. These shall be of a make approved by the Architect and able to take one-minute pack loads amounting to 150% of normal load without un- due heating or injurious sparking. They shall be able to carry normal load continuously with temperature rise not exceeding 40° C. above sur- rounding air. Furnish and install for use in connection with them an Edison storage battery of 20 amperes normal (8-hour) discharge rate at 24 volts. This battery is to be so connected that it may be kept floating on the 24-volt line to serve as a reserve. Fire Alarm System: Furnish and install a 6" gong of approved make on each floor from the second to the thirty-seventh, inclusive, on the north corridor wall near the ceiling opposite the entrance to No. 6 bank of elevators ; also one gong at the top and bottom of each of the No. 6 bank of elevators (making a total of 42 gongs). The system shall include break-glass fire alarms located one on each floor from basement to thirty-seventh, inclusive, at the south corner of No. 6 bank of elevators. An annunci- ator which will indicate location of alarm box which has been rung shall be placed in the engine room and a similar annunciator in the su- perintendent's office. There shall also be provided all necessary conduits for a combina- tion fire alarm and watchman service, as approved by the Manhattan Fire Alarm Company, locations to be where directed later. Illuminated Signs: Provide outlets and wire to all illuminated signs showing room numbers and signs for directing to elevators. There will be provided an illuminated sign at each floor served by the various banks of ele- vators at either end of the cross halls in east and west corridors so that it can be read in the corridors, indicating the location of the ele- vators to be used by tenants on various floors. Similar sign will be 267 placed at the end of the north and south halls serving the auxiliary group. Similar signs will be placed in the main hall indicating the number of the group of elevators. Each of these signs shall be provided with separate lock wall switch for its control. Mains and Feeders: The Contractor shall run three-wire feeders from each feeder board up their respective shafts to feed all tenant lighting in the build- ing, the runs of feeders to be as follows : Sub-basement to 2d, 3d to 6th, 7th to 11th, 12th to 15th, 16th to 19th, 20th to 23d, 24th to 26th, 27th to 29th, 30th to 32d, 33d to 34}th, 35th to 37th. For engine, boiler, pump and sub-basement fan room lights run a separate three-wire feeder, tapping cut-out cabinets where shown on plans. Separate three-wire feeders shall be run for each of the following classes of service: Night lights (marked "N" on plans), other corri- dor and hall lights, exit and stair lights, all other public lights (ele- vators, toilets, janitors' closets, etc.). Four No. 10 two-wire 30-volt feeders shall be run up the four low tension wire shafts, and be provided with suitable junction boxes on each floor. One set of two-wire feeders to each motor shown on plans or here- in specified and not provided for in distributing centers. One set of two-wire feeders to each distributing center shown on plans or herein specified. In addition, run one set of two-wire feeders from each distribut- ing center to each motor, as hereinafter specified. The Contractor shall do all wiring and make all connections from distributing switches on switchboard or distributing centers to all mo- tors and controllers shown on plans or hereinafter specified. Also install and connect motors and controllers, doing all wiring for temporary latrine pumps on eighth, sixteenth, twenty-fourth and thirty-second floors with control circuits to tanks, all as directed by the Architect, removing same when directed by the Architect. Motor will be of approximately 10 H. P. capacity. 268 Sub-Sub-Bas enie n t : Machine shop (feed from sub-basement center) .20 H. P. Total Sub- Basement: Fresh Air Fan for Boiler Room 1-35 H. P. Fresh Air Fan for Engine Room , 1-25 H. P. Fresh Air Fan for Pump Room 1-15 H. P. Fresh Air Fan for Safety Deposit 1-25 H. P. Fresh Air Fans for Basement ,. .2-20 H. P. Fresh Air Fan for Entrances 1-20 H. P. Air Washers 7-5 H. P. Third Intermediate: Laundry 15 H. P. Total Fourth Floor: Exhaust Fan for Equitable Space (feed from laundry center) 1-30 H. P. Fifteenth Floor: Elevators (Bank No. 1) 8-35 H. P. Twenty-Third Floor: Elevators (Bank No. 2) 8-35 H. P. Thirtieth Floor: Elevators (Bank No. 3) , .8-35 H. P. Thirty-Fourth Floor: Elevators (Bank No. 4) 8-35 H. P. Thirty-Sixth Floor: Elevators (Bank No. 5) 8-35 H. P. Pent House Dist. Center No. 1: Elevators (Bank No. 6) .8-35 H. P. Pent House Dist. Center No. 2: Exhaust Fan for Club Kitchen .1-15 H. P. Exhaust Fan for Boiler Room. ., l-£0 H. P. Exhaust Fan for Safety Deposit 1-25 H. P. Exhaust Fans for Basement .,. . .,. .2-18 H. P. Exhaust Fans for Toilet Rooms 2-20 H. P. Note : In above list, ' ' total ' ' indicates the aggregate horse-power of two or more motors fed from the board over a single feeder, which is to be run to each motor starter. 269 The above motor sizes are given for estimating purposes only, and the Contractor shall confirm or correct them before working draw- ings are submitted. Wiring for motors of proper sizes shall be pro- vided without increased charge. CONTROL. OF LIGHTS. All lights shall be controlled by wall switches as directed by the Architect. All wall switches in the building to be located subject to the ap- proval of the Architect. Unit Prices: The Contractor shall name one price only for any additions to or deductions from this contract for the respective materials and labor named below; said prices to obtain until the completion and acceptance by the Architect of all work called for herein; these prices shall include material and appliances installed complete and ready for service : Price for receptacle, plug and box complete, installed. . $ Price for drop cord, fifteen (15) feet long, socket, rosette and adjuster, installed $ Price for single pole flush push wall switch with outlet box, installed $ Price for double pole flush push wall switch, with out- let box, installed $ Price for ceiling outlet box, complete with hanger as specified, installed $ Price for wall outlet box, installed $ Price for switch outlet box, installed $ Price for water-tight floor outlet box, complete with plug and receptacle as specified, installed $ Price for sectional water-tight floor outlet box, com- plete with plug and receptacle, as specified, per section, installed $. Price for water-tight telephone floor outlet box, com- plete as specified $. One (1) clamp screw thread socket, installed $. 270 One (1) 12-circuit standard panel board complete with fuses and cabinet as specified, installed $. Two (2) additional circuits on panel board, with fuses and necessary increase in cabinet $. Conduit as specified (per foot), installed, including all fittings: \" $ If $ |" $ 2 " $ 1 " $ 2r $ \\" $ 3 " $ 34" $ Wire, per foot, rubber covered or Varnished Cambric, double braid, as specified, installed : No. 14 Duplex $ No. Single $. No. 12 Duplex $ No. 00 Single $. No. 10 Duplex $ No. 000 Single $. No. 14 Single $ No. 0000 Single $. No. 12 Single $ 300,000 C. M. Single. .$. No. 10 Single $ 400,000 C. M. Single. .$. No. 8 Single $ 500,000 CM. Single. .$. No. 6 Single $ 600,000 CM. Single. .$. No. 5 Single $ 700,000 CM. Single. .$. No. 4 Single $ 800,000 CM. Single. .$. No. 3 Single $ 900,000 CM. Single. .$. No. 2 Single $ 1,000,000CM. Single. .$. No. 1 Single .$ Bids: State what amount will be added to contract price for substituting "Okonite" wire for that specified. 271 ELEVATORS. Scope of the Work: The Contractor shall furnish and install a complete elevator plant, consisting of: Forty-six (46) passenger elevators, one (1) combination passen- ger and freight elevator and one (1) freight elevator, all of the 1 to 1 electric gearless traction type. One (1) passenger elevator and one (1) freight elevator of the direct lift plunger type. Working Drawings: Complete working drawings of the entire plant, showing location and arrangement of all machinery, tanks, piping, elevator cars, and all devices and appurtenances pertaining thereto, shall be submitted to the Architect, and his written approval must be obtained thereto before beginning the work, and any work performed without first having obtained the written approval of said Architect shall be at once removed when so ordered by him, and shall be performed in a manner satisfactory to said Architect and according to his written directions. Foundations and Supports: Furnish and install all immediate machine and sheave supporting beams and channels, and for the electric elevators furnish and install upon same floors of f" Linden steel. Openings in this floor with substantial iron gratings for ventilation and access to secondary sheaves as well as iron ladders from controlling floors to secondary sheave compartment and all other necessary openings for ropes, etc., with proper curb around same, shall be provided. Upon the Linden steel floor and beneath winding engine bed plates shall be four-inch thick strips of wood or other sound and vibra- tion reducing material. All supports, additional steel work, excavation, flooring, openings, gratings, ladders or change in construction in the building in any way that may be required in addition to that shown or specified, or that may be required for the complete installation of and access to all parts of this elevator plant shall be provided. 272 Foundations shall be of the best cement concrete, and where they extend above floor line shall be neatly finished with cement, with the top edges chamfered. Fit Pans: Furnish and install for the combination, the freight elevator, and the direct lifts, pit pans of 5/16 inch steel, all water tight and painted inside and outside with two (2) coats of asphaltum. Those for the direct lifts shall be properly provided with and pitched to four (4) inch flanges. The pans shall be set in concrete pits. All rivet heads shall be countersunk and flush. Guide Lubricators: Furnish and install on all main and counterbalance guides auto- matic oiling devices of type and make to be approved by the Archi- tect. Painting: After installation paint all machinery and other iron work in con- nection with these elevators at least two (2) coats of lead and oil, final coat of all shaftway iron work to be black with varnish added. The elevator winding engines shall be filled, painted, striped and varnished, and each shall have its number at least six inches in length upon it. Testing and Acceptance: When complete and ready to be turned over for acceptance and payment of retained percentage the Contractor must subject the ele- vator plant to sixty (60) minutes running, as in service conditions, with the speed loads and speeds as hereinafter set forth, and shall make such other tests as may be deemed necessary by the Architects to show compliance with these specifications. These tests shall be made by and at the expense of the Contractor and under the direction and supervision of the Architect. The Con- tractor shall furnish all the labor, instruments and weights necessary to make these tests. Final Adjustments: After the elevators have been in regular building service for a reasonable length of time should any adjustments, repairs or lining 273 up be required in such installation in the opinion of the Architect, such work shall be done at such times and as directed by the Architect. Traction Elevators. Bank Number. Car Numbers. Service Total Rise of Car From To Normal Class of Service Erpress Local to to Live Load Lbs. Live Load at Speed of Feet Per Min. 1 11. 12, 13, 14, 15, 16, 17, 18 Passenger 1 12 10 2500 550 2 21, 22, 23, 24, 25, 26, 27, 28 Passenger 1 20 11 18 2500 550 3 31, 32, 33, 34, 35, 36, 37, 38 Passenger 1 27 19 24 2500 650 4 41,42,43,44. 45,46,47,48 Passenger 1 32 25 30 2500 650 5 51, 52, 53, 54, 55, 56, 57, 58 Passenger 1 35 31 (Ultimate rise to 35 36th 2500 floor) 650 61, 62, 63 66, 67, 68 64 65 Passenger Inter floor and Special Freight Combinat 'n 1 37 S.S.B. 37 S.S.B. 37 37 37 37 2500 3600 7000 3600 550 450 Slow 450 Safety Devices: A complete description of the safety devices, automatic stops, brakes, etc., to be used, must be submitted to the Architect. Each car and each counterweight shall be equipped with a speed governor, the acting of governor to clamp car or counterweight to its guides and bring same to rest without injurious shock or jar. All governors must be constructed in such a manner that the respective machines will be first slowed down, and the potential switch opened before the application of safety, the application of the car safety to immediately open emergency circuit as herein described. Provide for the freight car a device to lock it at any floor when loading or unloading heavy freight. Provide each car with an emergency apparatus for applying Bafety device independent of governor. Under each car and counterweight shall be placed such an oil buffer or retarder as should the car under any conditions of loading run beyond its ordinary limits of travel it will be brought gradually 274 to rest without injurious shock or jar even at a speed of 50% in ex- cess of contract speed previously specified. Each elevator in banks 3, 4, 5 and 6 shall be equipped with such retarding devices (independent of both electric apparatus and oil buf- fers) as will prevent the car and counterweights from striking the top of shaftway, as also a device that should car or counterweight come within one foot of such ceiling in shaftway that such car or counter- weight will be mechanically arrested from descent without injurious shock or jar, all independent of other safety apparatus. Automatic stops shall be so located in hatchway that car will be gradually stopped near top and bottom of shaftway independently of the operator, and shall be located as far below and above lower and upper landings respectively as is consistent with good practice. Emer- cency limits shall also be provided in hatchway at such points as should the car by any chance overrun its ordinary limits of travel it will be brought quickly to rest in the same manner as by opening the separate emergency switch in car. The directional and emergency limit switches in hatchway shall open both the plus and minus control circuits. Each elevator shall also be equipped with a separate emergency switch in the car, the opening of wbich will immediately interrupt cur- rent and apply both dynamic and mechanical brake at the same time. Controlling Devices: The elevators shall be furnished with switch in car which shall have an independent mechanical or electrical stop on both the up and the down sides which can easily be set by the elevator operator to limit the speed of car in either or both directions to about 80% of full speed, all operating a magnetic controller complete in its connections and attachments. Starting current shall not exceed 150 per cent, of the maximum running current. Car switches and controllers shall be arranged for not less than two (2) running speeds. Ordinary service stops shall be made dynamically, the brake coming on at the last moment only. Only current for safety devices shall be on when elevator is not in use. Controller contacts shall be of such size as to carry not more than 100 amperes per square inch. Each car must attain specified speed in four (4) seconds from the time of starting. 275 Each controller shall be plainly marked with a number corre- sponding to its machine. Cars: The ornamental iron work in connection with the passenger and combination cars will be as specified under Ornamental Iron. Car frames shall be of wrought iron or steel of such strength that they will not be unduly stressed by eccentric loading or unduly strained by the application of main safeties or action of buffer. Each elevator shall have in the floor an easily removable brass plate of such size that fire department hose and couplings can be pulled through same into the car. All platforms shall be of clear maple. Floor plates, collars and angles for passenger cars shall be properly arranged for tile floor to be laid on the above mentioned maple floor. The freight elevator shall be enclosed on three (3) sides with finished hardwood wainscoting six (6') feet high and provided with collapsible gate. The sides above wainscot and the roof shall be of dia- mond mesh netting and roof shall be of such stiffness as to support two men without undue sag, and a section of the roof shall be easily removable. The floor shall be covered with diamond floor plate and the sides, to a height to five (5) feet with \" sheet steel. The secondary cross head for both the freight and the combina- tion elevators shall be beneath floor. Wiring: Direct current will be furnished for power at a pressure of 230 to 240 volts. Provide and install motor controller boards with all neces- sary fuses and minimum circuit breaker of self-closing type, wiring be- tween distributing center, controller boards and motors and all neces- sary wiring for controlling apparatus. All wires shall be run in conduit of same type as used for work of like nature in building; all ends must be lock-nutted in place and conduits shall be securely fastened to supports. Connection between car switches and junction boxes in shaft shall be made with best grade rubber insulated, taped and braided flexible elevator cable, and emergency circuits shall be run in a separate swing- ing cable. 276 The Contractor shall furnish all labor and material, including flex- ible rubber-covered cable, to install complete in each elevator car a three-light outlet and flush push controlling switch. Under and fast- ened to the floor of each elevator car furnish and install a clamp screw socket fastened to outlet box for inspector 's use. A similar outlet shall be provided on the roof of the car. Motor controllers shall be mounted on pink Tennessee marble not less than two (2) inches thick, free from blemishes and of even color, and mounted on angle iron frame. Details of controllers shall be sub- mitted to the Architect. Motors : Each motor shall be wound for the requirements herein specified, provided with carbon brushes carrying not to exceed thirty-five (35) amperes per square inch of surface contact at full load ; motors shall have self-oiling bearings. Motors must withstand under factory test an alternating current potential of 1,500 volts for one (1) minute. Each elevator shall be of ample size to operate at its proper full load and speed, as in service conditions, without shifting of the brushes from no-load to full-load, without sparking, cutting or blackening of the commutator and without heating in any part of the windings more than 40 degrees Centigrade or any part of the commutator more than 45 degrees Centigrade above the temperature of the surrounding atmo- sphere. Proper provision shall be made so that oil will be prevented from reaching the commutators of all motors. Sheaves: All main and secondary sheaves shall have machine turned grooves to properly fit ropes without clamping same. The rims of the driving sheaves shall be demountable. Bed Plates: Each winding machine and its motor shall be mounted on a single extra heavy well ribbed cast iron base plate securely anchored to foundation or supports. Bed plates shall be so ribbed that oil cannot drip on the car. Proper provisions with the same object in view shall also be made in connection with sheaves and governors. 277 Insulation: Insulation resistance between field and armature wire and frames of motors shall not be less than one (1) megohm. Equipment: The Contractor shall furnish a lifting bar for each size of arma- ture and all connections necessary for attaching to armature or shaft, as also two demountable triplex or other suitable trolley tackle to travel on hitch beams provided. Provide such a frame or portable structure as may be necessary in connection with above tackle to re- move armatures of bank No. 5. Main Brake: A spring actuated magnet brake shall be provided on each ma- chine of sufficient power to stop and hold the car under maximum and minimum load. The brake must be applied when its circuit is opened by the service limit stops, emergency shaftway limit stops, excessive speed of car, emergency switch in car, application of main safties, and by operator in ordinary service stops. Cables: Each elevator shall be equipped with the necessary wire cables, which shall have a factor of safety of at least ten under the speed loads called for. The attachment of cables to car and counterweight shall be able to rotate freely and maintain practically an equal tension on cables. Efficiency: Each machine when operating with the loads and speeds herein- before mentioned shall have as a whole at least a net efficiency of 70 per cent, from wire to load, electrical measurements to be taken at the elevator control board. Guides and Guide Posts: Furnish and put in place in proper alignment finished steel Tee guides for all cars and counterweights, which shall be reinforced where necessary. The car guides must withstand eccentric loading on platform without undue stress and all guides the application of safety, without undue distortion. All guides shall be properly lined 278 up and securely clamped or fastened to the adjoining structure beams or supports, and through bolt positive attachments shall be used about every sixth floor. Counterweights : The counterweights shall be proportioned to balance the dead weight of car plus a portion of the live load, and produce proper amount of traction on the driving sheaves for the maximum loads. They shall be so designed and constructed that weights cannot be jarred out or released by spread of frame. Rope losses shall be compensated for in a practically noiseless manner otherwise than by chains. Signaling System. Flashlight: The six banks of elevators are to be considered, insofar as sig- naling is concerned, as distinct groups. Equip each group of elevators with a full flashlight signal system complete with up and down lamps, fixtures, push button sets, swinging cables, all necessary wiring in conduits and connections complete throughout. The operation of the system shall be such that the press- ing of a directional button on any floor shall light a white or a red light in suitable fixture in front of the first car on its near approach to such landing in the desired direction ; a single light in suitable fixture in car to flash simultaneously with the corridor light. A single stroke bell shall sound at each flash light, both in corridors and cars simul- taneously with the lighting of such lamp. The whole combination thus indicating to intending passenger the car he is to take and to operator that he is to stop at such floor. The response of any car to a call to cancel automatically such call. Provide a cutout switch in each car so as to transfer the call to the next approaching car in group, if desired. In addition group No. 6 shall have such a switch for each car as will transfer to next approaching car all signals except for 1st, 36th and 37th floors. There shall be placed in each of four of the passenger elevators and in the combination elevator of bank No. 6, in addition to the 279 flash lamp, an annunciator for night service, so arranged that by op- erating a double throw switch located near the top of the hatchway it will throw off the flash signals and throw the annunciators into serv- ice, operating same from the flash push buttons. Provide for the elevators of each group two sets of flash push buttons on each floor served. These push buttons shall be located as directed by the Architect and mounted on neat ornamental plates of a design and finish to match grille work, all of which must be sub- mitted to the Architect for written approval. These plates, in addition to "UP" and "DOWN," shall have such other descriptive lettering as may in the opinion of the Architects be necessary to designate the class and scope of the service. While it is the intention at the start to operate the elevators and signal system as called for in column "Normal Class of Service" caption "Loads, Rise and Speeds," all signal mechanism shall be ar- ranged for and wires run in conduit ready to connect to fixtures and mecbanism so tbat the following additional floors in the various groups may be properly served : Group No. 1— 11th and 12th. Group No. 2— 9th, 10th, 19th, 20th. Group No. 3— 17th, 18th, 25th, 26th, 27th. Group No. 4^24th, 31st, 32d. Group No. 5— 30th, 36th. Furnish and install complete for each group of elevators one (1) iron-clad noiseless motor generator set to operate the flashlights and annunciators, each motor of a capacity, however, for two (2) groups, with motor controller board on which shall be mounted all necessary switches, fuses, motor starting box, etc., so connected tbat either set will operate one or two banks of elevator signals and annunciators. Furnish and install controller boards mounted on brackets near motors and all wiring between motor generators and controller boards and signal apparatus in conduit similar to that used in other portions of work. Controller boards shall be of pink Tennessee marble similar to ele- vator controller boards. Direct current will be furnished at controller boards at a pressure of 120 volts. 280 Each motor generator set shall be mounted on a hard wood foun- dation, and efficient means provided to prevent oil from reaching such foundation, all to be approved by the Architect. There shall be provided in each car, where directed, a switch con- trolling the signals of its respective car and so connected that its sig- nals may be disconnected at that point. Telephones and Miscellaneous: Furnish and install in each car a telephone equipment for op- erator's use. All the elevators of any bank to connect to a telephone terminal box on first floor near said bank. Make all connections in a proper manner between telephones in cars and terminal boxes. Near the base of each bank of elevators (except No. 6) shall be located a bell which can be used for night service, using the up and down push buttons, a throw over switch being provided which shall cut out or in the flashlight signals or the bells. Each elevator bank (except No. 6) shall be provided with a varia- ble time starting single stroke bell system, with regulator for changing interval between strokes of bell. Bells to be located near bottom of each group of four elevators. The regular boxes for varying interval between strokes to be located in a central position on first floor for ready adjustment in a location as directed by the Architect. All con- nections, wiring, etc., shall be made to render the system operative. Annunciators : Provide the freight and as hereinbefore called for the combination elevator each with an electric annunciator provided with drops for each floor at which cars land, and each with proper push buttons in an inconspicuous place provided at such floors. The two circuits to be independent of each other. Proper connections shall be made between each push button and its annunciator with all necessary wire run in conduits, to connect to motor generators, junction boxes, etc., and all materials, etc., to make the system operative. In addition provide and install for each group a duplicate system of batteries, on which all of its bells or buzzers (except flashlight bells) can be operated at night. They shall be complete with all wiring and switches necessary to operate them on either the motor generator sys- 281 tern or the battery system. The battery cells to be in locked boxes or cupboards and to rest on non-corroding trays or pans. Indicators : Position indicators and pointers will be installed for the elevators in the first story as specified under Ornamental Iron, furnished with all necessary material and labor to connect each indicator with the lifting machinery of its respective car. An extra indicator for each the com- bination and the freight shall be installed in sub-sub-basement, all prop- erly connected. Travel Recorders: Each elevator shall be equipped with an accurate mileage re- corder. Hydraulic Direct Lifts. Load, Rise and Speed: The freight elevator No. 1 shall rise from sub-sub-basernent to six feet above first floor and shall have a maximum ordinary capacity to lift a live load of 3,300 pounds on the platform at a speed of 50 feet per minute, and to travel at a speed of 150 feet per minute with 2,000 pounds on the platform, and shall be capable of lifting 7,000-pound safes at a slow speed by means of a safe lifting pump. The safe deposit elevator No. 2 shall rise from sub-basement to first floor and shall have a live load lifting capacity of 2,500 pounds at a speed of 50 feet per minute and 150 feet per minute with 1,500 pounds live load. Cars: The floor of cars shall be of hard wood and that of No. 1 shall be covered with diamond steel plate. The cage for No. 2 will be furnished by the Ornamental Iron Contractor. Elevator No. 1 shall have locking device for locking platform flush with sidewalk and at other floors for loading safes. Operating Devices: The freight elevator shall be operated by hand rope, controlling a balanced valve with graduated opening, and the passenger elevator 282 by a lever in car in connection with pilot valve. Arrangements must be made to stop cars automatically at top and bottom limits of travel. Guide Posts and Guides: Steel tees properly reinforced where necessary shall be provided for guides. Cylinders, Casings and Plungers: The cylinders shall be enclosed full depth in steel casings not less than |" thick, provided with outside couplings and anchored in such a manner as to prevent any settlement. The cylinders shall be made of heavy wrought pipe of standard dimensions, that for the freight extra heavy, with long thread coup- lings and with ends butted together. Cylinders shall be put together above ground and made water tight under double the maximum work- ing pressure. In case of any leaks the joints shall be made over, and under no circumstances will any caulking of joints be allowed. The plungers shall be made of heavy steel tubing, surfaced and polished in lathe, and put together with inside couplings. Counterweights : Each elevator shall be equipped with a counterweight similar to those specified under "Traction Elevators," but without safety ap- paratus. Bumpers: Under each car and counterweight shall be spring or rubber bump- ers of ample strength and compression. Pumps : Furnish and install two (2) Duplex, Steam Driven Pumps, each of a capacity to allow each of the two elevators to make round-trips every two minutes. Steam pressure at throttle will be 150 pounds. The pumps shall be properly lagged and painted ; they shall be of the outside packed plunger pot valve type and shall perform the serv- ice called for at not over forty (40) strokes per side per minute. Provide each pump with a steam regulating valve and force feed lubricator which will deliver oil in proportion to the number of strokes as also with a sight feed lubricator. 283 Provide a safe lifting pump of the duplex, steam driven type, of a capacity to lift 7,000-pound safes at a speed of fifteen (15) feet per minute of a type and lagged similar to the main elevator pumps. This pump shall be provided with a sight feed lubricator and the plungers shall be of bronze. Provide two (2) steam driven, vertical, air compressors of the locomotive type, the air cylinders of which to compress air to 250 pounds per square inch ; it being understood, of course, in so pumping the two pumps will be compounded on the air ends or will receive air from the 75-pound air system of the building compressed air system. Each pump, however, to be able to deliver compressed air at 100 pounds per square inch with free air suction. All steam, drip and exhaust connections for all the above pumps shall be installed. Tanks : Furnish and install pressure and discharge tanks of such a size that both hydraulic elevators will be able to start at the same time and fulfill the speed and load conditions as hereinbefore outlined. Pressure tank, or tanks, shall be equipped with all necessary tank fittings, safety valves, gauges and automatic self-closing gauge cocks, as also all necessary nozzles and flanges for pipe connections. Provide for air pumps a receiver for intermediate pressure of 100 gallons capacity, as also a terminal pressure storage tank of 100 gal- lons capacity. Piping: Make all pipe connections between cylinders, valves, automatic stops, pilot valve, pumps, tanks and all piping, valves, gauges, etc., to make this hydraulic elevator system properly operative. Between each pump and its delivery gate valve shall be placed an adequate water relief valve, and all pumps shall have bye-passes so that they may be operated at moderate speeds with delivery valve closed. Provide a sniffing valve on regular service pumps. The safe lifting pump and its elevator shall be piped such that main valve shall not be subjected to safe lifting pressure, the manip- ulation of the machine to be directly from the pump and by bye-passes of small diameter. 284 A bell, wire and battery system shall be installed from the safe lifting elevator to the safe lifting pnmp for the purpose of signals from the elevator to the pump operator. All pipe valves and fittings subjected to safe lifting pressure shall be extra heavy. Make connections from compressed air house system and connect to intermediate air tank and make air connections between air pumps and air tanks so that either or both pumps can deliver free air to in- termediate tank or take air from intermediate tank and deliver to high pressure tank. Make all pipe connections from the high pressure tank to the elevator pressure tank or tanks and the three house service cushion tanks. All air piping, valves and fittings for pressures above 150 pounds shall be extra heavy. All necessary valves, check valves, safety vales, gauges, etc., shall be provided to make this air system complete and operative. Annunciators : Equip each of the two direct lifts with an annunciator and push buttons at floors served and connect same to one of the motor genera- tor sets as also to a battery set, all in a manner similar to annunciators in traction elevators. Annunciator box and push buttons for the pas- senger elevator (No. 2) to match surroundings. Each elevator shall be equipped with a telephone and connected to elevator exchange as previously specified. Propositions. A close approximation shall be submitted of the average overall K. W. H. per car mile of all the elevators considered as one unit under the following conditions: Number of elevators in service (Nos. 11 to 68, inclusive), number of floors served as per "Normal Class of Service." Loads and number of stops as would obtain in this building un- der normal service running conditions. Figures to be based on normal service between 8 a. m. and 6 p. m. Main Proposition. In accordance with the plans and specifications. 285 Alternate "A": Substitution of 2 to 1 rope-geared traction winding engines for the 1 to 1. Alternate "B": Substitution of double helical spur gear traction winding en- gines in place of the 1 to 1. The operation of same to be prac- tically noiseless and without appreciable vibration in car. Alternate 'C": Substitution of worm gear winding engines specially de- signed for this service. 286 BOILERS. In General: Furnish all labor and materials to execute, install and complete the Boiler work, in accordance with the plans and the following speci- fications. Scope of the Work: The work covered by these specifications includes the boilers and breeching and all work in connection with same. Working Drawings: The Contractor shall submit complete working drawings for all work called for under these specifications, showing layout of boilers and connections, with size of piping and connections, for the written approval of the Architect, which approval must be obtained before beginning the work. Inspection and Insurance: The Contractor shall furnish a certificate of inspection from an inspection and insurance company approved by the Architect, that the boilers have been properly tested and inspected, which work shall be done twice for each boiler as follows: First: When it is in the shop. Second: When it has been set up complete on its foundation; it shall then be made tight under the pressure hereinafter specified. He shall also furnish an insurance policy in favor of the owner, from the same company in the amount of $5,000.00, to cover a period from the time the boilers are installed until one (1) year after date of acceptance by the Architect and issuance of final certificate. Fainting: After installation all covering shall be painted two (2) coats of lead and oil, and all exposed iron work shall be painted two (2) coats of asphaltum paint; doors and frames shall be relieved with a light colored line striping put on as directed by the Architect. 287 Units: There shall be the following water tube boilers, set and bricked up in place: 2—525 H. P. each (set in battery). 2—525 H. P. each (set singly). 1— 450 H. P. (set singly). 2—350 H. P. each (set singly). They shall be of a make approved by the Architect, and dimen- sions shall be such as to adapt them to the space allotted to them as shown on the drawings. The tubes shall be not less than three and one- quarter (3£") inches in diameter. All tubes shall be of charcoal iron and properly expanded into their headers and arranged for removal and cleaning of same through proper openings protected in an approved manner. These headers shall be of forged steel, and all covering plates for tubes shall be ar- ranged so as to make tight joints inside of header. Heating Surfaces: Boilers shall each have not less than ten square feet of effective heating surface per horse power. Pressure : The boilers shall be of a type adapted to work under a pressure of 160 pounds per square inch, and must be tested and made tight under hydrostatic pressure of 300 pounds per square inch. Drums: Each boiler shall have two (2) or more steam and water drums, cylindrical in form and made of O. H. steel. Longitudinal seams shall be butt jointed, having inside and outside cover plates with two (2) rows of rivets on each side of joint. Provide nozzles for safety valves and steam connections. All connections shall be flanged, properly faced and drilled. Each drum shall be complete with a forged steel manhole plate. All flanges shall be forged steel. Boiler Settings: Each boiler shall be set upon a foundation of concrete, made with washed gravel or broken cobble stone, and shall be enclosed in brick 288 walls not less than seventeen inches thick, the outside of which shall he hard burned brick. All brick work exposed to the fire and hot gases shall be lined with Maurer No. 1 first brick laid in fire clay mortar and well ground down, with every other course a header. Provide a fire arch over fire and use steel mixture cast clay door jambs and wedge brick arches in cast iron frames. Fire clay joints between brickwork must be as thin as possible. Boilers shall be pro- vided with drop dead plates of bull nose fire brick four inches deep. Front, rear and side walls of boilers to be faced with light gray vitri- fied pressed brick. The Contractor shall furnish and install all brick work necessary for side and rear walls, bridge wall, or any other brick work necessary back of bridge wall and for iron front furnished by him, of height re- quired for the future installation of stokers, which shall not be less than eight (8) feet from floor line to bottom of front header. The foundations shall be carried down to a depth as required by the nature of soil and the depth of the ash pits as required. Settings shall be arranged so that freed draft equipment may be installed if desired. Each boiler shall be supported on wrought iron beams resting on wrought iron columns with cast iron bases or on beams and brick work. Any brick work which would otherwise rest on the building footings shall be carried over same by steel beams, protected by concrete and properly supported on piers. Each boiler shall be furnished with a neat ornamental iron front provided with all necessary openings and doors for access, and so con- structed that a stoker can be installed in the future with the minimum of change and expense. Each boiler shall be furnished with a neat number and name plate, of a design approved by the Architect. All portions of the boiler shall be made accessible, and if any addi- tional doors or openings are required, the Contractor shall provide same. All parts shall be of a substantial construction, well jointed and neatly finished. 289 Valves and Fittings: On each boiler provide the following: Two (2) or more, as re- quired, nickel-seated pop safety valves of a make and type approved by the Architect, set to blow off at a pressure as directed by the Archi- tect, and of ample size. One (1) steam gauge, iron case, with 12-inch dial face with nickel- plated frame. Gauge shall be graduated to read from to 300 pounds, with 150 pounds at center line. One (1) safety water column complete with standpipe and large size glass water gauge fitted with independent cleaning pipes and valves. Try cocks shall be provided with lifting handles arranged to be operated from the boiler room floor; the column sLall be pro- vided witb a high and low water alarm. It shall be provided with cop- per funnel with drip pipe carried to the ash pit. Provide guard rods for the water glasses and shut-offs for renewal under pressure, ar- ranged to be operated from boiler room floor. All metal work in con- nection with these water columns shall be brass. One (1) globe valve and one (1) flanged check valve for boiler feed. One (1) approved blow-off valve for each blow-off connection, so arranged as to be easily accessible. One (1) valve for tube cleaning connection. One connection of such size as required and provided with check and globe valves for connections for discharge from the high pressure drip system. The Contractor shall provide and install all necessary pipe and fittings for attaching the above mentioned fixtures to the boilers in order to make a complete working plant. All valves on above mentioned connections, except blow-off valves, shall be of extra heavy polished brass; pipe and fittings used in mak- ing up the above mentioned connections, except for blow-off, shall be brass, and all changes in direction shall be made with crosses and tees, and not ells. Breeching and Smoke Connections: The Contractor shall furnish and install the main breeching to the stack, the smoke connection from each boiler to the main breeching made of sheet steel, No. 10 U. S. gauge, thoroughly bolted and riveted 290 at connections. Smoke connections shall enter breeching on a curved line with adjustable deflectors inside of main breeching. Breeching and smoke connections shall be provided with ample sized cast iron cleaning doors, with frames, made to close air tight. Main breeching and each smoke connection to same shall be fur- nished with a heavy damper, arranged to be operated from boiler room floor and provided with quadrant and chained pin. A second main damper shall be installed in the breeching and arranged to be operated by a damper regulator. Fixtures : Each boiler shall be equipped with flame bridge plates, bridge wall, ignition arch, girders and bars, all the necessary bolts and pipes, all the requisite openings in the walls and bars for same, buck stays and anchor bolts. There shall be furnished and installed in front of each boiler a steel ash pit plate set in iron frame. Furnaces : Provide all labor and do all work necessary to equip each boiler with a hand-fired furnace complete with dumping grates arranged for No. 3 buckwheat coal and not less than ten (10) feet in depth. Grates shall be sloped to rear, J inch to a foot, and have 3/16-inch air space. Pins connecting dumping bars with dumping rods shall be cold rolled steel with bronze cotter pins. Tools: Provide all necessary tools for the regular operation of boilers and tube scrapers with gas pipe handles, also scale cutting machine of approved make, with necessary hose. Flanges : All flanges shall be of the thickness and drilled according to the pipe fitters' standards as specified in Steam Fitting specifications. Coverings: All steam drums and connections thereto shall be covered with 85 per cent, magnesia blocks two (2) inches thick, so applied as to be easily removed. Cover all blocks with 4-inch thick asbestos cement. All connections up to the flanges shall be covered in a similar manner. 291 On top of drums the magnesia blocks and cement are to be covered with a rowlock course of brick. Lining: This Contractor shall line the entire inside of the breeching and smoke connections with vitrified asbestos stack lining not less than two (2) inches thick, furnishing all the necessary fastenings to secure the lining in place, supported upon angle irons, and all joints made perfectly tight with specially treated asbestos cement. 292 ENGINES. Scope of the Work: The work covered by these specifications includes the engines fur- nished and installed complete and the placing of same in successful operation. Foundations : The Contractor shall furnish all labor and material and do all work necessary to install the foundations required by the machinery furnished by him. Foundations shall be of such a character that no jarring or vibration will be perceptible when the entire plant is run- ning under full load conditions. No foundations shall go below or come in contact with the building footings, and the Contractor shall furnish steel beams thoroughly protected by concrete and properly supported on piers to relieve building foundations of all vibration where engine foundations would otherwise rest on same. Foundations shall be of best cement concrete and shall extend not less than four (4) inches above floor line, and shall be neatly finished with white enameled brick above floor line and in wheel pits. A 4x4- inch curb shall be provided all around generator pit, beveled on side away from pit, to prevent surface water running into pit from floor; the curb to be neatly finished with white enameled brick. After the engine and generator sub-bases are set upon founda- tions the Contractor shall grout them in position with the best ce- ment concrete. Painting: Before shipment all engines and accessories shall have all ex- posed surfaces which are not machined, filled and rubbed down to a smooth finish. The generators will be furnished filled and rubbed down to a smooth finish. After installation is complete the Contractor shall paint all en- gines, generators, balancer sets and accessories two (2) coats of pure linseed oil and white lead, tinted as directed by the Architect, then striped and finished with two (2) coats of best grade varnish. Each unit shall be properly numbered. 293 Submitting; Bid: The Contractor shall submit specifications in triplicate, stating the kind and make of apparatus and material he proposes to furnish for all parts of the work covered by these specifications, all of which shall be approved by the Architect in writing. Proposal shall give a detailed description of lubricating system and the means of adjusting the various moving parts. Also the fol- lowing detailed information for each size of engine: Size of steam pipe. Size of exhaust pipe. Size of receiver. Diameter of each cylinder. Length of stroke. Length of main bearing. Diameter of main bearing. Diameter of shaft at generator fit. Diameter of crank pins. Length of crank pins. Diameter of cross head pins. Length of cross head pins. Width of cross head shoes. Length of cross head shoes. Diameter of piston rods. Diameter and width of face of fly wheel. Net weight of fly wheel. Net weight of engine complete. Units: There will be installed six generating units, three of GOO K. W. at 110 R. P. M., two of 300 K. W. at 110 R. P. M. and one of 200 K. W. at 110 R. P. M. The engines furnished and installed under this specification shall be of ample capacity for this work when operating as hereinafter specified. 294 Type of Engines; The 600 K. W. and 300 K. W. engines shall be of the horizontal, cross compound, Corliss releasing valve gear type, non-condensing. The 200 K. W. engine shall be of the horizontal, simple, non-con- densing, Corliss releasing valve gear type. Generator field frames will be horizontally divided and engine sub-bases shall be so arranged as to permit of sliding the generator field frames sideways in the direction of the axis of the shaft a sufficient distance to clear the armature for the purpose of repair. After each engine is placed upon its foundation the space between the cylinder and outside casings shall be packed with a high pressure moulded asbestos non-conducting covering. Bodies of cylinders shall be thick enough to allow reboring and operation under the same steam pressure. Each engine shall be equipped with a soft packing of a make ap- proved by the Architect, but shall be so designed that a metallic pack- ing may be substituted later. Main bearings shall be provided with chain oilers. Regulation and Load: All engines will operate on a combined power, electric elevator, and lighting load and shall be provided with fly wheels of sufficient weight to insure successful operation. Each engine must regulate within one and one-half (1£%) P er cent, from no load to full load and two (2%) per cent, from no load to 125% of full load; also the percentage of momentary change in speed due to 100% change in load during two seconds shall not exceed 3%. Each engine must be capable of carrying full load for twenty-four (24) hours continuously, and then carry 25% overload for two (2) hours and 50% overload for one (1) hour additional and 100% over- load momentarily without undue heating in any of the bearings and without undue straining of parts or any sign of distress. Steam Consumption: Steam consumption shall not exceed 27 pounds per I. H. P.-hour at full load nor 30 pounds per I. H. P.-hour at half load for the 200 K. W. unit. 295 Steam consumption shall not exceed 22 pounds per T. H. P.-hour at full load nor 30 pounds per I. H. P.-hour at half load for the 300 K. W. unit. Steam consumption shall not exceed 20 pounds per I. H. P.-hour at full load nor 27 pounds per I. H. P.-hour at half load for each 600 K. W. unit. Engines will be operated non-condensing, exhaust steam to be used for heating; back pressure 3 lbs. gauge. Fly Wheel: The flywheel of each engine shall be cast in halves and shall be bolted together at the hub with reamed bolts carefully fitted in holes drilled from the solid, and the parts shall be planed true where they join. The wheel shall be carefully designed throughout in order to have a large factor of safety, and both edges and face of rim shall be turned true. Provide bar holes and apparatus for conveniently turn- ing engine. Materials Used in Construction : All steel castings used must be thoroughly annealed. All cast iron must be hard, close grained, sound, tough and of uniform quality throughout. All castings shall be sound, free from sand and blow- holes, cold shorts and mill cinder, shrinkage cracks and all other im- perfections, and shall be carefully inspected to insure uniform density throughout the piece. No plugging or filling of holes or cracks will be allowed. All castings shall be true to form and dimensions, smooth and thoroughly cleaned on the outside and inside surfaces and all cores removed with wire brushes and scrapers and shall be free from loam, sand, dirt and rust, all scabs and other surface imperfections; and shall be neatly chipped and filed off to the proper line of surface of the casting. All brass, bronze and composition metal must be made of new material only, to comply in proportions with the standard alloys and especially adapted to the work which will be required in each instance where brass or other composition will be used in the construction of the engine. 296 All babbitt metal must be well hammered in all boxes and sleeves before boring. Steam Pressure: All guarantees shall be based upon steam pressure at the throttle of one hundred and fifty (150) pounds per square inch, and containing two (2) per cent, of moisture. Covering : The receiver and all pipe work in and around these engines and connections, including throttle valve, which are installed by the Con- tractor, shall be encased with an 85% magnesia covering having walls 34 inches thick, heavily covered with canvas. Paint this covering two (2) coats of lead and oil, final coat tinted as directed by the Architect. All coverings shall be neatly and thoroughly applied, special care being taken with fittings and joints. All covering shall be of a make approved by the Architect. Tools and Equipment: The Contractor shall furnish for each engine a full equipment of all necessary wrenches, tool board, studs, dowel pins and special appli- ances, a set of polished brass oilers, including trays and stands, #20 planished copper drip pans for all bearings, approved automatic nickel- plated cylinder lubricating pumps of a make approved by the Archi- tect, as also nickel-plated sight feed lubricators of ample size, and approved throttle, exhaust and drip valves. Each engine shall be provided with a complete system of nickel- plated brass oil piping, terminating in a sight feed tip at each point on engine needing lubrication. These pipes to be brought together at one point on the engine. Each engine frame to have a drain connec- tion for oil. Each engine shall be provided with a type of automatic engine stop which will insure stopping any unit the speed of which exceeds normal by 10%. Each engine shall be provided with nickel-plated indicator cocks. Furnish also two approved indicators with accurate reducing motions. 297 Railing: The Contractor shall furnish and install for each engine a railing which shall run around the accessible sides of the fly wheel and gen- erator pit and terminate in an approved manner. All pipe stanchions and fittings shall he of polished steel. The stanchions to be screwed into polished iron floor flanges. Bids: Alternate "A": The installation of a steam turbine plant, with generators and all appurtenances, with or without condensers, which will fulfill the load conditions specified for engines and generators. Alternate "B": The substitution of simple for compound en- gines in the 600 K. W. and 300 K. W. units. 298 GENERATORS. Shop Drawings: Supplementing section headed "Shop Drawings," page 9, it is intended that drawings submitted by the Contractor shall show de- tails of generators, connections and sizes of leads necessary to con- nect generators to the switchboard. He shall exchange the necessary drawings and data with the Engine Contractor without delay. Scope of the Work: The work covered by these specifications includes generators, bal- ancer sets, etc., furnished and installed complete, and the placing of same in successful operation. Painting: Before shipment all generators and balancer sets shall have all exposed surfaces which are not machined, filled and rubbed down to a smooth finish ready for final painting after installation. Submitting Bid: The Contractor shall submit specification in triplicate stating the efficiencies of the different sized generators at full load, three- quarter load, half load and 25 per cent, overload, number of poles, net weights of yokes and armatures, diameter and width of face of com- mutator, guaranteed wearing depth of commutator bars, and give a complete description of all apparatus together with all guarantees. Efficiencies shall take into account all losses except bearing friction and windage. Tests: Each generator and balancer shall be subjected at the shop to a continuous heat run of eight (8) hours at full load, followed by con- tinuous run of two (2) hours at 25 per cent, overload. Machines shall be in good mechanical balance and shall operate practically noiselessly and without jar or vibration. Regulation, heating and sparking limits, efficiencies, etc., shall be as herein specified. All tests are to be made in accordance with tbe rules of the Amer- ican Institute of Electrical Engineers. 299 Notify the Architect when generators and balancers are ready for factory test, so that he may be represented at the test if he so desires, and furnish the Architect with a complete copy of the shop tests be- fore shipment. Units: There shall be installed six generating units of the two-wire, direct current, direct connected type, one of 200 K. W. normal capacity at 110 K. P. M., two of 300 K. W. normal capacity at 110 R. P. M. and three of 600 K. W. normal capacity at 110 R. P. M. The normal full load ampere capacities shall be based upon a nominal rating of two hundred and fifty (250) volts, although nor- mally operated at 240-244 volts. Generators : All generators shall be compound wound, with series and shunt field windings wound and insulated separately. Frames shall be horizontally split, of high magnetic permeability and of ample proportions to insure mechanical stability. Provide connection boards for each generator, equipped with suit- able lugs to receive generator leads and cables. The Contractor shall properly mount on each generator frame slate terminal block, carrying ammeter shunt, connecting it to the proper machine leads. Generator terminal connections shall be so arranged as to permit of location of circuit breaker panel adjacent to each generator. All generators shall be provided with detached sole plates of suf- ficient length to allow field frames to be slid sideways so as to expose the armature and field coils for inspection and repair. Armature shall have laminated core built up of carefully annealed sheet steel discs, securely keyed to the spider, which shall be so de- signed as to possess great strength and rigidity with a minimum of shrinkage strains. Armature discs shall be thoroughly japanned to prevent eddy currents. Coils shall be continuous without joints from segment to segment of commutator, and shall be thoroughly insulated and held in the slots by wedges. The commutators shall be of a construction enabling them to with- 300 stand strains due to expansion, contraction and centrifugal force. Seg- ments shall be of the best hard drawn copper and of sufficient depth to allow ample wearing surface, and shall be insulated from each other and the cast iron center by the best grade of mica suitable for the purpose. Mica and copper shall present a uniform wearing surface to the brushes. The commutators shall be turned so as to run perfectly true and have a smooth surface and, if necessary in the opinion of the Archi- tect, shall be turned after the installation without extra charge. Brush rigging shall be so constructed that all brushes may be skifted simultaneously. Brush holders shall be so constructed that tension springs and sliding contacts are not depended upon to carry the current from the holders. Brushes shall be set so as not to get out of alignment as they wear down. Brush tension shall be individ- ually adjustable without the use of tools. Brushes shall be of carbon and the current density shall not ex- ceed thirty (30) amperes per square inch of surface contact at full load. All generators shall operate successfully in parallel, dividing the load between them in proportion to their normal ratings. Heating and Sparking: Each generator shall carry its full rated load continuously for a period of eight (8) hours without heating in any part more than 35 degrees C. above the temperature of the surrounding atmosphere. Immediately following the above mentioned full load run each generator shall carry 125% of its full rated load for two (2) hours without heating in any part more than 50 degrees C. above the tem- perature of the surrounding atmosphere. Each generator shall operate without sparking and without cut- ting or blackening of the commutator at all loads from no load to 125% of full load without shifting of the brushes, and shall carry 150% of full load for a period of one (1) hour immediately following full load run and 200% of full load momentarily without injury, and without shifting the brushes. 301 Regulation : The machines shall operate successfully on a combined power, electric elevator and lighting load. They shall have good inherent reg- ulation and shall show on actual factory test a smooth compounding voltage curve between no load and full load, which shall not vary at any point more than two (2) per cent, from a straight line drawn be- tween the no load and full load voltage points. The field windings shall be so proportioned as to give 240 volts across the terminals of the machine at no load and 244 volts at full load with constant setting of the field rheostat and at the rated speeds, allowing 2% drop in engine speed from no load to full load. The machines preferably shall be so designed as to give the above specified over-compounding without the use of a shunt across the se- ries windings, but in no case shall the machines show a greater rise in voltage than ten (10) volts from no load to full load without the use of a shunt on the series, as it is desired to keep the amount of shunted series current down to a minimum, to improve the voltage regulation on fluctuating loads. Tf this condition is not met when the generators are tested, they must be provided with different and suitably designed field coils before they will be accepted. Efficiency: The efficiencies, including brush friction, shall not be less than 92% between one-half and full load for any generator. Insulation : The generators and balancers must withstand a factory insulation test of an alternating current of at least fifteen hundred (1,500) volts continuously applied for one (1) minute after the final heat runs have been made. Materials Used in Construction: All castings shall be of the first quality, with smooth surfaces, free from blow-holes, scabs, chipping marks or other defects; all pieces at joints shall be dressed fair with each other, making well finished joints. Nuts and bolt heads shall be hexagonal, finished and case hardened. All polished work shall be free from tool marks. No plugging or filling of holes and cracks allowed. 302 Field Rheostats: There shall he furnished and installed under this contract motor operated field rheostats with all necessary accessories required for the parallel operation of the generators. The control switches, indicators, etc., shall be mounted directly upon the switchboard panels, as des- cribed under "Switchboard." Emergency means for hand operation shall be provided for rheostats. Balancer Sets: The Contractor shall furnish and install on foundations finished similarly to the engine foundations and provided by him, two balancer sets. Each set shall be of sufficient capacity to take care of 200 amperes flowing in the neutral. Balancer sets shall be built by the same firm that manufactures the generators supplied under this contract. Each 6et shall consist of two separate machines with three bearings mounted on single cast iron bed plate. Each set shall be compound wound with adjustable German silver field shunts which shall be mounted on the frame. The sets shall be so designed that they will maintain equality of voltage on the two sides of the three-wire system within 1^ per cent, without hand regulation or adjujstment. That is, with 200 amperes unbalanced current, the voltage on one side shall not ex- ceed 122 and on the other 118, with 240 volts between positive and negative. It is desired that the design of the sets he such that they may be operated to secure the above conditions without the use of field rheostats. However, if required by the system contemplated, all neces- sary field rheostats shall be provided. Rise in temperature in balancer sets after 8 hours run at full load in the neutral (200 amperes) shall not exceed 40° C. in any part except the commutator which may rise 45° above the surrounding air. The speed of these sets shall not exceed approximately 1300 R. P. M. 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