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Las diegrammas suivants illustrent le mAthode. 1 2 3 32% 1 2 3 4 5 6 REPORT AND SPECIFICATION ACCOMPAMTIHO ORB OF IHB PKIZB PIA»8 FOE THH SUPPLY OF THE CITY OF HAMILTON WITH WATER FKOM BUELINGTON BAY .• ••NON QUO, BED QUOMODO." [NoTt.-Thl8 Report is re-publlehed by a Member of the Provincial Agricultural Association, on account of the great novelty and merit which the plan o^ Water Distribution, recommended by the Engineer, posseVes; and of the proi^ional ability and ingenuity dispLiyed in the preparation of the Plaua and Report.] The Ohcirman of Fire and Water Committee, City Ball, Hamilton. The general arrangement of Main, and Sub-main, and Service- pipea, is indicate* by blue lines on the accompanying enlnrged Map of part of the City o," Hamilton. The position of the Distributing RePorvoir, Engine-house, Stand-pipe, &c., is also shown thereon; and the height of the water in the Reservoir above the several streets, at their intersections, is given in red figures. SiirATioN AND Construction of Reservoir. The situation chosen for the Reservoir is on the high ground to the south of the property of Sir Allan McNab ; it occupies the entL block bounded by Florence, Governor, Lock, and Princess streets, and is slightly undulating (but in the main nearly level) affordmg an excellent base for the embankments, and is therefore' preferable to a site, the natural surface and underlying straitfication of Yhich deviates in any great degree from an horizontal direction. The reservoir is divided into two compartments by a central embank- ment, provision being made (as hereafter described) for the thorough cleansing of either compartment without emptying the other, or in- ter^ermg in any degree with the continuous supply of water. The embankments are proposed to be formed of clay of a retentive quality, an abundance of which can be readily procured in the r iah- bourhood. The outer slope is At the rate of one and a half to one and the inner at the rate of two to one ; the bottom and inner slope to be lined with hard-burnt clinker bricks, laid on edge, and grouted with hydraulic mortar, and resting upon a bed of concrete one foot thick, the embankment and bottom having been first puddled with •1-«?cSS'j«iS;'fir'*^" thep^nphletonthosuyeot. originaU, publWwd by blue clay ; injury to the embankment from the percolation of water through ita substance will thus be effectually prevented. Size of Bbsebvoib, &o. The 812 9 of each compartment will be, at the water line, 170 feet long and 150 feet wide; the depth of water will be 21 feet; the height of the T-ater above the average level of the Bay wiU be 144 feet. The capacity of each compartment will be 2,022,433 gallons ; the entire quantity of water in both compartments will be 4,044 866 imperial gallons, or 4,850,338 American gallons, affording a supply for more than four days to 40,000 inhabitants, estimating the quan- tity to be supplied to each at 30 imperial gallons per, day, or 86 standard American gallons. * Supply Piph, Ac. Each compartment is provided with a separate influent or Supply pipe from the engine, entering the reservoir at the point indicated on the drawings This pipe terminates in a chamber of masonry, arranged in such a way that the current of water therefrom is directed upwards, and is effectually hindered froiik wasting a,vay or otherwise injuring the bottom of the reservoir, as is frequently the case when, the reservoir being empty, the water is let on from the engine, and when no provision of this kind is made for diverting the force of the current from the bottom ; it has also the effect ol preventing the current from disturbing any sediment which mar happen to be at the bottom of the reservoir, and which would other- wise become mixed with the entire quantity of water therein. Valtbs, &o. This pipe is provided with a hinged Valve, so that when the water is shut off, or the engine ceases to work, the water cannot flow back to the stand-pipe ; and thus repairs can be effected upon the valves and stand-pipe without any risk of flooding. Each branch of the ■upply-pipe is provided with a slide-valve (shown on sheet No. 12), by which connection with the engine can be stopped when necessary. These valves, as well as those of the cleansing-pipes, are enclosed in a valve-house, for greater convenience in reaching them for repairs, or other necessary objects. The apparatus for raising or lowering the slide-valves is placed in the ground floor of this building, so as to be easily within reach of the attendant. CiiBAKsiva Pipes, &o. The Cleansing Pipes, one from each compartment, also pais through the lower story of this building, and are provided with valves similar to those already described. These pipes communicate with A well, lined with masoniy, and sunk below the bottonL^ the r* Toir, which inclines in every direction towardb clcjising pipes pass from this point th«)ugh the volre-house to a re- ceiving well, placed outside the building. When it is required to draw off the water entirely from the bottom of one of the compart- ment«, for the purpose of cleansing or repairing them, the valve being opened, the last of all the contents is received in the wells above mentioned, and is drawn away through the cleansing pipe into the receiving well, and pasues thence into the main sewer. A man-hole is constructed in the crown of the arch over this well, for the pur- pose of giving admission thereto, and for removing any silt or mud which may be deposited therein. CoNNBCTIOlf PiPB BETWEEN COMPAKTMENTB, &C. In order to keep the surfaces of both the divisions at a level, a Cormecting Pipe is placed in the central embankment. This pipe is bedded in concrete, and midway a slide-valve is inserted, for open- ing or shutting the pipe. A circular well or man-hole is constructed at this point, to give access to the valve. A moveable oak frame, ■upported on stone corbels, projecting from the face of the wall, serves to steady the valve spindle, and to give standing room to the attendant when closing the valve. This framing, as well as the timber cov.ering on the top, can be removed whenever it may be necessary to repair the valve. Waste Pipes, &o. When the water has reached its proper height in the reservoir (which is L foot 6 inches below the top of the embankment), and still continues to flow from the engine, the surplus water rising in the waste pipes to the bend therein, falls over it into the water-bag in the waste-weir well below, and is thence carried off into the main sewer. At this point the embankment is raised between two re- taining walls of masonry, to the height of 4 feet over the pipes, so as to protect them effectually from the frost ; and the mouth of these waste pipes is sunk to a depth of 8 feet below the water line, for the same purpose. SUBITAOE DbAIKAOB. A raised terrace, 10 feet wide, is formed round the base of the outer embankment, to protect it at the foot; and on the outer margin of this is constructed an open paved drain, which will receive t||e superficial drainage of the embankment, and convey it to the lewer, through the necessary gratings and gully drains constructed at each angle. DSLTVBBT FBOM BesEBTOIB, &C. The delivery from the reservoir is arranged in such a manner that the water may be drawn either from one compartment alone or from both at once, each division having its own separate outlet. The orifice of each effluent pipe is enlargrd to receive a perforated screen of Bufiicient size to permit the quantity rf water neceuHary for filling the pipe to pass into the main, the screen preventing any grosser matters which may he in the reservoir from passing into the delivery pipes. The efliuent pipes psas through a valve-house, similar to that already described, and are united in one principal main of 18 inches diameter, at a little distance. The arrangement of these, as well as the influent and cleansing pipes, is shown in the plan and details of the reservoir, sheet No. 10. Mode o? Disteibutiok, Ac. The mode of distributing the water through the city is shewn in the accompanying enlarged map. The principal main leaves the reservoir on the south side, and passes along Bailway-street to its intersection with ^ing-street; thence along the latter to Queeu- Btreet ; thence, keeping on the high ground in the neighbourhood, on Hunter, Bond, and Anderson streets, to the termination of the latter street, on the east side of the city. From this main, sub- mains proceed down McNab, James, M&ry, aud Wellington streets, ti> the north shore of the Lake. At the intersection of the several streets crossed by these sub-mains,' service-pipes are attached, by curves of 15 feet radius. Those service-pipes proceed, as shewn on the map, towards the east, in which direction the greater part of the ground on which Hamilton is built inclines. After passing the several intervening blocks, these pipes are again joined to the main, east of that from which they started ; and in every case they reach the former at a level very considerably below that of the point whence they first proceeded. The whole of the water is thus made to flow downwards, instead of being forced upwards in the pipes by the pressure of the head. By this arrangement all return cur- rents are avoided, and any sediment there may be remains in a great measure undisturbed. For example, the water leaving the James- street main, by the service-pipe at the corner of King-street, reaches the Mary-street main on the corner of Henry-street, at a level of 86 feet 6 inches below its level in King-street. And again, the junction of the Service-pipe out of the mam on Bay-street, at the tomer of Cannon and Bay streets, with the main on James-street, is 21 feet below the point at which it leaves the Bay-street main. The great advantage accruing from this mode of distribution is, tl\yt it precludes the necessity of having what are technically termed Dead Ends (that is, where the ends of the service-pipes terminate abruptly, without being joined to any other pipe)^ which not only occasion a heavy and jarring pressure, but are invariably found to be the r-eeeptaeles of exccssiro sad very prejudicial deposk, which is often both troublesome and exponsire .to remove. Instead of the great number of these dead-ende, which the adoption of any other mode of distribution would occatiion, there will not be in the whole city any but those at the extreme ends of the main pipes ; or, in other words, not more than four or five in all. The system, it ia true, is to some extent a novel one, but is in every reapecfc the most suitable and efficient for a city situated aa Hamilton is. The circula- tion of the water is uninterrupted, and its descent continuous from the reservoir to the furthest point to which it is conducted. Cutting off Connection of Service Pipes, «fec. The manner of cutting off the connection of the S.jrvico Pipes with the Mains has also been carefully considered, and is exhibited in Sheet No. 13. It ia eifected in this way : At the junction of each Service with the Main, a Hydrant or Fire Plug is placed at the near- est side of the street ; a Sluice Cock is also inserted in the Service at the same place ; at the union of the pipe with the lower Main another Stop-cock is inserted, and on the upper side of this is also an emptying cock bolted to a sleeper cast upon the Service Pipe. When it is desired to isolate any length of the pipe, the upper sluice is closed and the Hydrant opened ; the water is thus cut off from the Main -, the lower cock is next closed, so that none can enter from the lower Main, and the emptying cock being opened, the water con- tained in the Service is discharged into the receptacle below, and is thence carried into the Sewer by the small connecting Culvert. As the water leaves the Service Pipe, air is admitted, so that the water flows freely off, and the pipe can then be taken up or repaired as may be necessary. These Sluice Cocks are enclosed in arched wells of masonry, having Man-holes in the mwn of the arch, so as to be readily accessible when required. Cleansing Mains, Ac. The mode of cleansing the Mains from any accumulation in the bottom of such undulations as may necessarily occur in consequence of the unevennes of the ground, is shewn in Sheet No. 13. A cleans- ing pipe of not less than 6 inches diameter is attached to the Main by a sleeve ; this cleansing pipe passes through a man-hole or well, in which is placed a sluice cock, by opening which a quantity of water is rapidly drawn from the Main, carrying with it the silt or mud laying in the pipe, which falls into the water bag in the receiv- ing well and passes thence into the Sewor. Hydrants, &o. The form of Hydrant or Fire Plug, as shown in sheet No. 15, pos- sesses many advantages which cannot be claimed for any other with which I am acquainted. In the Drawing referred to is exhibited m vertical section of the Urdroot complete — the cast iron shell is shown bolted to a branch elbow-pipe ; thia shell has an internal projecting rim or flange near the top, which is bored to receive the hollow brass plug through which the water finds its way into the hose from the Main. A double-threaded screw, one inch pitch, is cut on a pro- jecting spindle, cast in a piece with the lower end of the plug ; and this screw works through a brass cross piece checked into the bottom of the outer shell to act as a nut for the vertical movement of the plug in opening and closing the Hydrant. The water from the main always keeps the space between the exterior of the plug and the in- terior of the shell full as fur up as the bored internal flange of the latter ; and when the plug is screwed downwards to its lowest posi- tion, as in the Drawing, it escapes into the interior of the plug by the line of slots, and thence up the barrel to the Hose. The^tufliug box of the plug being intended to stand excessive pressure, ppssesses several peculiarities. The gland is cast finished, of composition metal, in which tin forms the chief ingredient ; the cupped portion at the bottom of its ring, which fits the plug, slightly overlaps a Gutta Percha Eing with a bottom flanp-o ; and in the groove formed by this flange and the bottom edge of the gland, narrow packing ring of Hemp is placed as stuffing, the adjustment being effected by screwing down the three bolts of the gland in the usual manner. The interior of the top of the plug is grooved on each side for the recep- tion of two feathers on the coupling for attaching the Hose ; and the upper screw on this coupling is left-handed, so that when the Hose is attached the plug of the Hydrant may be turned to depress it in obtaining a supply of water, without endangering a twisting of the Hose. This Hydrant presents very superior facilities for repair, for it is only necessary to unscrew the four bolts which attach the shell to the Main, when the whole may be lifted out and taken to the work- shop, another being put down in its place— the whole operation oc- cupying only a few minutes, and leaving the street undisturbed. The working surfaces are well adapted for durability, and any slight wear cannot effect the tightness of the parts ; and the internal pressure in the Mains tends only to close the plug by its action on the screw. Provision is also made for avoiding the eflTects of frost, as no water remains inside the tubular plug when closed, and as the orifices are passed a short distance above the packing ring, the water in the tube always flows out. The opening screw is of considerable pitch, one turn bemg sufficient to elevate or depress the plug an inch, and the gradual action of the screw prevents the occurrence of any sudden shock from the rush of water. No stand pipe is reqviired, the com- munication with the Hose being entirely effected h. a short brass tube screwed at each end. For opening and closing, nothing more is required than one of the small lever keys used by the Fire Brigade. ■im f 80 that no delay can occur from want of proper keys. In point of economy, too, this Hydrant possesses advantages over most others, as where they have been used in England they have been suppled at about £1 sterling each. (This Hydrant hai been patented in Eng- land, see "Glasgow Mechanics Magazine," vol. 1.) Pipes.— Size, Stbenuth, &o. As respects the diameter, thickness, and junctions of the Pipes intended to be used, it may be proper in this place to state, that the sizes, of the several Main, Sub-main, and Service Pipes, arc marked in figures on the enlarged Map already referred to ; and t) "^t the thickness of metal of these pipes will be, for * Service Pipes of 2, 3 and 4 inches i inch. Sub-Main " (5, 7 and 8 " \ «' Mains " 10 and 12 " | " Do. " 15 i " Mode of jointino Pipes, &c. "With regard to the description of joint, it Vill be seen by refer- ence to sheet No. , that the pipes are shewn with Socket Joints, packed with hemp and leaded, a groove being lefh in the socket for the lead to run into and thus ensure a perfectly water-tight joint. This method of jointing water-supply pipes has been much practiced, and is no doubt effective when properly done ; but it has the disad- vantages of greater cost, more trouble in laying, and extreme diffi- culty of removal should there ever be occasion, as compared with the less expensive, easier laid, and more readily removed and replaced Flange Joint Pipes, packed with Indian Rubber or Gutta Percha packings, and bolted together, as shewn in Sheet No. Stakd Pipe, Toweb, Ac. As in works of this kind it is very desirable to relieve the Engine as '■■ a as possible of the water delivered from the pumps, which is usually effected by the erection of a Stand Pipe, as near to the En- gine as may be, and reaching to a height a little over that of the water in the Keson'oir, advantage has been taken for this purpose of the high ground immediately adjoining the site of the Engine House, on which it is proposed to erect a Stand Pipe and enclosing Tower, as shewn by drawings on Sheet No. 8. The ground at this point is 83 feet 6 inches above the level of the water in the Bay, the Stand Pipe is 65 feet 6 inches high from the ground level ; its total height therefore, about the clacks of the pumps, will be 149 feet, or 5 feet higher than the surface of the water in the Reservoir. At the bottom of the Stand Pipe, leading from the Engine, is fixed a Butter- fly or Flap Valve, (also shown in the same Drawing,) the action of which will be to admit the water delivered by every stroke of the pumps to flow up the Stpud Pipe, and, at the completion of the stroke, tho Valye closen and preventa its return to the Engine— thu. immediatljr relieving the pump valves from the prewure of the water. A HioHER Site tob tub Kbsebyoib, Ac. Tt may bo right hert? to mention, that although the Beservoir is shown in what to my judgment is, for all present and prospective purpoHcs, the situation best calculated to ensure the completeness and general usefulness of the works, yet that there is another site for the Keservoir (indicated in lines on the enlarged Map), which, if it were deemed preferable to adopt, would secure an additional distri- buting elevation of 18 feet over the present site. And this change can be made without atfecting in any degree the plan and arrange- ments laid down, further than that the Engines and pumping appa- ratus would be placed at tho foot of Hess or Queen street; the power of the Engines would have to be proportionately increased; and the leading Main be carried down James street, and thence as already shown. This Ik'serveir would be sunk 10 feet below the ground level, and the embankments formed of the soil removed from the excavation. The arrangement of influent and effluent pipes would be similar to that already discribed, witl^ the exception only of the efflu- ent pipes, which would be made to pass through the same Valve House as the other pipes ; and this Valve House would be situated on tho North side of the Eeservoir. ENQiyus, Ao. The Engines herein set forth are two double-acting condensing Engines, having a Beam supported on two longitudinal Girders and Columns for each. They are worked upon the High pressure expan- Biou principle-tbat is to say, admitting the steam at a pressure of 80 lbs. per square inch on the piston, and cutting off the same at an early period of the stroke ; thus working at a high degree of expan- sion, and consequently greatly diminishing the weight and magnitude of the working parts of the Engine ; in addition to these advantages, the one and all-important advantage is the saving of wood or coal which is only to be effected by Engines on this principle. I do not say principle in form, but principle in theoretical construction, based upon practice and observation. The Engine is upon the rotative sys- tem, which perhaps to some may appear not so well adapted as the single-acting or Cornish Engine. The Cornish Engine is a very effective one, as it performs its work at a single stroke of the steam cylinder and pump plunger, but it must be remembered that the speed of the Engine is very slow, and one stroke of the piston is used for lifting the plunger, and fortius purpose only the steam is employed ^,_i.i !„., .^eifjni- anu aizc oi the dinorent parts. And of course this Engine is very much more •xpensive than theEotativo < expansiire double-acting Engine. By reference to the Dmwinfjs (Sheets Nob. 1, 2, 8, 4, & 6) and annexed Specification, it will be seen that thin Engine will work a double-acting Pump so constructed as to perform work at every stroke of the Engine, although the pump attached to each Engine has but one working barrel. The velocity of tho piston in the steam cylinder will be 15 single strokes, or 30 double strokes per minute, giving the pump a velucity ol IK) feet per minute, which is but a very ordinary speed, and thoroughly effective. The Engine, with such a puuip and spej'd, will at no perioii have to contend with sudden resistances, the work and speed of the machinery being perfectly uniform in consequence of the actioa of the pump. On reference to Drawing No. 3, it will be seen that while the pump piston is delivering the water on one side of the same and through the valve marked " delivery valve" the water is flowing through the valve marked " suction valve" into the space left in vacuo by the ascending and descending strokes of the piston— tliis is performed at every stroke of the same, so that when the stroke is complete and the return stroke is made, the piston meets with tlie same amount of re- sistance that it had in delivering the water on the other side —hence the uniformity of the work to be performed. Each Engine is equal to H5 horse power, and sufficient to accomplish the required amount of work. Pumps. The Pump consists of a cylinder truly bored and fitted with valves as shewn in the ('.niwing. This pump will throw GO gallons at one revolution of the Engine, or 1, 290,000 gallons per day, which is more than is needed, but taking into consideration the wante, the quantity required for manufacturing purpodos and fires, it is, I tl»ink, only a fair allowance. The total cost of the Eugiues, Pumps, and Boilers, I estimate at £U,000. The Specification of the Machinery, describing the difierent parts, is annexed to this lleport. Pipe into the Bay, &c. The mode in which it is proposed to conduct the water from the Bay to the Suction Well of the Engines, is as follows ; a well will bo sunk in the position shewn on the enlarged map, of suitable dimen- sions, and bricked up in the manner described in the Specification, into which the water will be conducted by a^Cast Iron inlet pipe, carried out into the Bay to a distance of 200 yards. This pipe will pass under the Great Western Eailway, through the sluice already formed there, at the foot of St. Mary's Lane. The pipe to be laid in a channel excavated in the bed of the Bay, surrounded and protected from the water, during the process of laying, by Cofier Dams of narrow width, and in such lengths as shall be found the most conven- ient to manage; the water being pumped, out by a small portable 10 Engine The pipe wUl be protected by a covering of shingle and large atones, deposited over it after bemg laid in its place. The extreme end of the pipe to be terminated by a Perforated Iron Screen, ihe water passing through this pipe will fall into the well just descnded and will from thence be conveyed by a brick-buUt Culvert, into the Suction Well within the Engine House. In submitting to the consideration of the Council, this plan for supplying the City of Hamilton with water from the source speci- Hed in the advertisement, I would beg permission to direct attention to the essential requisites for completeness and efficiency which it has been my object to secure. In the first place, looking at the probable rate ot increase in the population, my estimate for the supply has been ba^ed on double the present number of inhabitants ; and in order that the supply may be ample for public as well as private purposes, the allowance per head has been taken at the mnximum. in the second place, to secure as nearly as may be an uninterrupted supply, and to provide as far as practicable against those accidents and contingencies which are inseparable from the system of pumping from the lowest level, I have not only deemed it necessary to put down two Steam Engines and two sets of ^pumps, but also to have each ■IT ^ '^^"^"<^ Po^«r to perform the needful work alone-work- mg the Eugnias alternately and regularly, and so having one Engine and a set of pumps always in perfect order, and in reserve for any emergency that may arise. In the third place, I have so laid out all the l)i8tr,buting Pipes as to secure as complete and continuous circulation of the water as possible, knowing that without this pro- vision the quality of the water is often much deteriorated at the lower points, and that both in England and America, many otherwise well- designed works of Water-Supply have been marred in effectiveness by the omission of this preventative. In the fourth place, I have anxiously endeavored to make full provision for cleansing and repairs, ior an abundant supply of fire-plugs easUy reached and readily man- aged, for flushing sewers, street watering, and for aU other public purposes. And lastly, I Imve had such a careful regard to the outlay as 18 consistent with that durability and completeness which, in all Public Works, and more especially in works of this description and importance, it is the truest economy to make the first consideration. 11 SPECIFICATION Of Work to be done and Materials furnished in erecting Bcservoirs, Engines, Pimps, and other Apparatus for supplying the City of Hamilton with Water from Burlington Bay, in accordance with the Plans herewith submitted, and bearing the Motto "NoN quo, bed t''^fKi*^ \'l^^ ^"•^■'"«*"^ ^^'^ withVbfit met^: ^1 1 t . K '^l*u^l^ lubricators. The Parallel Motions-The mmx hnks to be ot the form and dimensions shown, fitted with hard gun-metal brasses accurate y bored, with distance pieces, gibs and coke s complete ; the back hnks to be open-ended, having liL C. meta brasses with distance pieces and keyn well fitted ; the parSlel bars to be round, arg*^- m tfie centre than at. the ends and of' the tTZlt"'■?^.V^'' ^rawings-they a,^ not to hav^ scraps, ^t to be fitted with brasses and keys, with cups for lubricating th« working pares; the Eadius Eods to be of the same form v^V^Ccu racoiy coutred. A JHoiv-through Valve to be provided and put "in a convemoat part for the Eaginemaa to use with the leverJ of tWstert! 16 which will be furniBhed hereafter: Jhe cSde^o t^Vr^^ caat iron, very accurately bored and fitted w?tK.^ ? . F^^ '""''^ Sfstd tt f r' ' ^i'*;^ "4"^ «f ^'"^^ will h3;"te ,uf niched: the Valves must have checks fastened on the inside of Z l^Z rru""^ '" placed that the Valve shall not open oo far -dl the jomts to be very truly faced, and the Valve Doo?s to be nlan^d on the joint surface and well bolted to the Valve Box the P? Eod to be 3i inches thick, of the very best faggotcS wit^it^^ ne Pun>p Cover to be well fitted to the pump flanee and thf.rn.. . f ' bolted down ; it nmst have brass bushes andffis A set nf"n .^ ^ Valves are also to be provided ; all the other narts oi- tt °* "K"" ^Fulu^'^^Tf well fedded down to the bed plate which Ist ll ^' both this and the Cold Water Pumn Th^ ^ P'aie wmch is to carry thick, and weU nvetted together by | rivets li nitoh Vi!V\ , * na diameter, and 6 feet 6 inches ;long-XyaW to brnf-.\^l^^^^ The Stays on the top of the Pire BoJarP f n K ^""^^^^^ the same. ' i inch thick; each Li er to be provl^^^^^^ 2.inch blow-iff cock, and a som-e set of fill? T*^ P^"*^" *"^ o°« set of brass guage coS, aK the o h^^wUhTts w T ''^' «* SaMv Falves.-On the Steam Dome there mufbefcrft?^ and a regu ator for stopping the commun™ Zn betreent^v of S Boilers detad drawings of which will hereafter be given Sie of' It Safety Valves is to be provided with a weiVhf nnrJ ^u \2 . *°® Spring Balance; and iS additL to thirealVoUer^^^^^^ ^^? ** apparatus for testing the height of the wateH„ ty,« p ^^^ * ^°^^ event of the other means failing b/ckmal or otK^ ?°*-^T' "* J,^« Steam Pipes are to be i inch tf icT pronTd with !' '*'*^"*'- • .^'"' and weU clothed so as to be proLc erf^t the eflfe't^^^ J^J?*!. would very much diminish the effenf nfthlJ • •: *'°'°' ^'^'ch . perfect!, .0.^^ "L.^rr^e^Xt'^SL^l^S'^tS to be bright; and aU Patterns and Castings to be submitted for in- ^ ^ Bpection by the Engineer appointt ♦or that purpose by the City U \ U L Council. And it is further to be .^tood, thJt aU detaUs not ^^^^ herein mentioned, but shown upon the ^xawings or otherwise intended to be speciiied, and actually necessary to be made, are to be under- tiiken, with any slight alterations that may hereafter be decided upon lor the best by thw party or parties contracting or otherwise under- taking the said wt)rk8— the same to be completed and set at work at the expense of the said Contractors on the place appointed for the erection of the said Engines, Pumps and Boilers. AN ESTIMATE Of the Cost of the Works herein reported upon, and to be executed in accordance with the Drawings and Plans herewith submitted, and bearing the motto, " Nont quo, sed quomodo." Reservoir, Land and Appendages 2,600 o' Two 35 Horse-Power Engines, with BoUers, Pumps, Ac! 6,'oOO Main Pipes, and Laying 26,000 Sub-main and Service Pipes 80,000 Engine House, Tower, Wells, &c 2^600 » Lb £66,000 This Estimate is for the supply of the whole area of the City, and the entire works as delineated on the Plans, but as the greater portion of the above amount would be expended in laying the pipes through dis- tricts, where, from the sparseness of the population, a supply of water will not presently be needed, the amoun*- is of course very much above that required for the immediate necessities of the City. By con- fining the supply to the more central portion of the City, this amount may be very greatly diminished. My Estimate for the Mains, Sub-mains, and Service Pipes to supply the area bounded on the south by Hannah street, on the north by Stuart street, the •west by Mcf»fab street, and the east by Wellington street, including the Eeservoir, Engines, Stand Pipe, Hydrants at the intersection of every street, and all the necessary appendages, is £26,400 It 18 also right to state that although the use of the Stand Pipe is expedient and desirable, yet it is not absolutely necessary, the cost therefore (£960) may be deducted from this amount, thus making the sum £26,