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K. D. MALAVIYA NATIONAL OIL MUSEUM

AT GUWAHATI

CIVIL ARCHITECTURAL & STRUCTURAL

INCLUDING FINISHING, SITE DEVELOPMENT,

SANITATION & PLUMBING WORKS

VOLUME III

PRICE BID

Architect

Pheroze Kudianavala Consultants Engrs. Pvt. Ltd.

Mackinnon Mackenzie Building,2nd Floor, Ballard Estate,Mumbai 400 001.


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SANITATION & PLUMBING WORKS


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K. D. MALAVIYA NATIONAL OIL MUSEUM

INDEX

------------------------------------------------------------------------------SR. NO. DESCRIPTION PAGE NOS.------------------------------------------------------------------------------

(10) SCOPE OF WORK SPW 2 - SPW 3

(11) SPECIFICATIONS SPW 4 - SPW 34

(3) LIST OF MATERIALS SPW 35 - SPW 37

(4) LIST OF DRAWINGS SPW - 38


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SCOPE OF WORK

1.0 The scope of work shall cover supply, installation, testing and

commissioning of the Sanitation & Plumbing System covering the

following:

j) External Sewerage System with Inspection Chambers, Manholes,Gully Traps chambers, S W Pipe, etc. complete in dug or prepared

trenches.

k) External Storm water System with Storm water Channels, InspectionChambers, Manholes, Water Entrance Chambers, RC NP 2 Pipe etc.complete in dug or prepared trenches.

l) External water Supply for Landscaping System with Valve Chambers,G I C Class Pipe, Garden water Points along with water Irrigation

system etc. complete.

m) Municipal Water Main/ Bore well pump del. to U G Tank with WaterMeter Chamber and G I C Class Pipe, bore well with submersible

pump, Auto control panel for pump etc complete as per requirement of

local municipal authority

j) Rain Water Harvesting System With Soil Hydro geological Survey,

Short Bores, Pressure Well / Ring Well, Filtration chamber, Bore welletc complete as per requirement of local municipal authority.

k) O H Tank feed pumps, (one working + one stand by Pump) controlvalves, non return valves, Strainer, Foot valve and all other specials, &

Control Panel with Pump automation cabling from U G Tank to O H

Tank along with probe switches for Auto control of Pumps, etc

complete as directed.

l) Totally submersible Sump pumps at U G Tank Pump room area with

High and Low Automation Probes for Auto on off system includingchangeover facilities control panel for pump etc complete

m) Septic Tanks with Soak Pit, With Necessary Vent Pipes, Manholecovers etc complete as per requirement of local municipal authority

n) Internal Water supply system (Flushing and Domestic water Lines ) asper local municipal requirements & as shown in drawings.


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o) Internal Sewer Drain lines (Soil, Waste, Vent & Antisyphonage Pipes)In C I Pipes with Lead Caulked Joints

p) Roof Drain lines (C I Pipes with Lead Caulked Joints )

j) Pump Room Drainage with Sump Pumps and control panels.

k) Inserts, flanges, dead end plates/ control valves & Pipe Sleeves For allwater Tanks

n) Sanitary Fixtures and C P Fittings as approved by Engineer-in

charge.

o) All necessary Approvals & NOC from concern local Municipal

Authorities including getting the Water, sewerage & storm water

connections.

p) Making detail working drawings of the complete system/s,

coordination with other services drawing and get these shop drawings

approved by Engineer-in charge.


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SPECIFICATIONS FOR PLUMBING DRAINAGE AND WATER SUPPLY WORKS

1.1.1 Contractor shall study the site conditions before tendering and shallsatisfy himself before submitting his Tender as to the nature of theground and subsoil, form and nature of the site, the hydrological,climatic and physical conditions at the site, the quantities and natureof work and materials necessary for the completion of the work andmeans of access to the site, the proneness of site to floods as also thehighest flood levels, recorded, observe or found in the past, as alsoaccommodation required by him, and, in general, shall himself obtainall necessary information as to the risks, contingencies, and othercircumstances which may influence or affect his tender.

1.2 References -

1.2.1 References to standards, code, specifications, recommendations shall

mean the latest edition of such publications adopted and published atdate of invitation to submit proposals.

1.2.2 The work in general shall be executed in accordance withCPWD Specifications and as per the approved drawings forservices

1.3 Drawings and Literature -

1.3.1 Before proceeding with the work, the contractor shall submit forapproval general layout and working drawings as are necessary todemonstrate fully that all parts of the materials to be furnished willconform to the specifications.

1.3.2 Within 30 days of the acceptance of the tender the contractor shallfurnish three (3) prints of layout, assembly and erection drawings forapproval. If any modifications are proposed by the owner / Consultant,six (6) further prints of the modified drawings shall be submitted. Nomodifications shall made in drawing after it has been approved by theConsultant/Owner without prior consent.

1.3.3 Approval by the owner/Consultant of the drawings shall not relievethe contractor of any part of his obligation to meet all the requirements

of the Contract or of the correctness of his drawings. The contractorshall be responsible for and pay for all alterations of the works due todiscrepancies or omissions in the drawings or other particularssupplied by him, whether such drawings have been approved or not.

1.3.4 After execution of works, contractor shall furnish a set of originaltracings of as-built drawings incorporating the modifications if anyduring execution.

1.4 Inspection and Testing at Contractor's premises -

1.4.1 Owner or its authorised representative shall have full power to inspect

drawings of any portion of the work or examine the materials andworkmanship of the plant at contractor's works or at any places from


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which the material is obtained. Acceptance of any material shall in noway relieve the contractor of his responsibility for meeting therequirements of the specifications. The cost of any special tests and/oranalysis not called for in this specification shall be borne by the ownerin case the material proves satisfactory but shall have to be paid bythe contractor in case the material or work is found defective or ofinferior quality.

1.5 Material Availability

1.5.1 The successful contractor shall ensure that all materials areprocessed well in advance to avoid any delay in completion of theproject. They will intimate in writing to the consultant in the daily reportproforma.

1.5.2 In case of non-availability of any particular material the contractor shallprocure next best available material and install the same at no extra

cost to the Owner after written approval of the clients through theconsultant.

2.0 BASIS OF TENDERING

2.1 The tender shall be complete covering the entire work of plumbingsystem and ancillary services including all building system and outsideutilities as shown and specified.

2.2 The contractor shall consult specification, drawings and schedule ofquantities which give an idea on these system.

3.0 DRAWING

3.1 The drawings accompanying these specifications are design drawingsand generally are schematic. They do not show every off-set, T's,cross, Y's, Junctions coupling/flanges etc. which are required forinstallation in the space provided. The contractor shall show thedrawings, as closely as is practicable and install additional bends,elbows or junctions, etc. where required to suit local site conditions,from actual site measurement taken, subject to approval and withoutadditional cost of the Owner. The consultant reserves the right tomake any reasonable change in outlet location prior to roughing in. Allconnections and appurtenances, shown in the various diagrams, shall

be included in the finished job.

3.2 It shall be the contractor's responsibility to coordinate with all others,for proper and adequate installation clearances.

4.0 ORDINANCE, CODE AND REGULATIONS

4.1 It shall be the contractor's responsibility to provide completesystem, as indicated and as required by applicable code. Allclarifications, which have to be cleared with appropriate authoritiesshall be carried out without additional cost, to owner. Unless otherwiseapproved, the product shall bear the mark of approval of I S, asrequired, by the governing bodies, code and ordinances and local


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authorities whose permission are required for occupation of thebuilding on completion.

5.0 SHOP DRAWINGS

5.1 The contract drawings shall serve as working drawings for generallayout of the piping and various items of equipment. The contractorshall prepare and submit for approval, detailed shop drawings of allitems, not detailed on the drawings, setting drawings, clearancedrawings where required, for proper coordination and all changes tothe drawings. It shall be the contractor's responsibility to see that alldeviations from drawings and specifications, noted on the drawingsand brought to the attention of the consultants, otherwise approvalshall be automatically voided.

5.2 The Contractor shall prepare plumbing and water supply shop drawingcoordinating with Electrical and HVAC layouts to avoid any conflict at

the time of execution of work.

5.3 The Contractor shall prepare a shop drawing for sanitary ware,fixtures and fittings showing positions planned with reference to tileline for Consultants approval.

6.0 MEASUREMENT LINES AND LEVELS

6.1 Check, dimension of the building site and establish lines and levels forthe work specified.

6.2 All inverts, slopes and manholes elevations shall be established by

instruments, working from an established datum point. Elevationmarkers and lines shall be provided for consultants' use, todetermine that slopes and elevations are in accordance with thedrawings and specifications and local bye-laws.

6.3 Established grid and area lines shall be used for location of trenchesin relation to building and boundaries. Trenches shall be carried out tothe true alignment and to required levels. No refilling will beallowed for the purpose of making up the bed of trenches, but to makethe same with lean concrete mix 1:4:8.

6.4 Use of sight rails, boning rods shall be adopted during the whole

process of excavation and laying of the pipes.

6.5 Sight rails shall be fixed at suitable intervals which shall not exceedtwenty metres before the excavation is begun. No extra charges willbe paid for excess excavation.

6.6 Sufficient width shall be available in the trenches to allow a space of300 mm. on the either side of the body of drain pipe to facilitate layingof the pipes and jointing.

6.7 When the trenches are in deep or bad ground, the sides of thetrenches shall be supported with suitable timbering.


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6.8 All pipes, water mains or gas mains, telephones and cables etc. metwithin the course of excavation, shall be carefully protected andsupported without any extra charges.

7.0 THE SETTING OUT

The Contractor shall be bound to examine the plinth level or levelsindicated or suggested in the drawings and to ascertain its or theircorrectness of adequacy with reference to his findings on theinspection of site as provided in Clause 1:1:3 hereof and shall, in theevent of such plinth level being found to be unsuitable of inadequate,appeal to the client for the necessary correction. In doing so, theContractor shall ensure the plinth level at some reasonable heightabove the highest level recorded, observed or found by him. thecontractor shall assume wholly and exclusively the liability for suchplinth level unless otherwise directed, in writing, by the Employer.

8.0 STONEWARE PIPES, BENDS, JUNCTIONS, JOINTING ANDTESTING.

8.1 All stoneware pipes, bends, junctions, gully traps, intercepting trapsshall be salt glazed inside and outside and shall conform to thespecifications of IS 651.

8.2 The pipes shall be hard, sound, truly circular in cross Section,perfectly straight, free from all flaws and projections.

8.3 Before being laid, the pipes shall be thoroughly cleaned specially from

the inside. Cracked or chipped pipes shall not be used on the work.

8.4 WORKMANSHIP

Tarred gasket or hemp yarn soaked in thick cement shall first beplaced round spigot of each pipe and the spigot then be placed wellhome into the socket of the pipe previously laid. The pipe shall thenbe adjusted and fixed in the correct position and the gasket caulkedtightly home so as to fill more than 1/4 of the total depth (13 mm. indepth) of the socket.

8.5 The remaining space in the socket shall then be tightly and completely

filled with cement mortar comprised of one part of cement and onepart of sand, and shall be neatly leveled off, outside the socket of thepipe at an angle of 45. A wooden caulking tool shall be used forforcing the mortar home into the socket. The inside of each pipe shallthen be carefully wiped with the mop or scraper, sufficiently long topass two joints from the end of each pipe and any projecting or extracement shall be removed to leave the inside of the pipe clean as thework proceeds. All the joints shall be kept moist by means of wetHessian bags to protect them from the sun or wind. All pipes enteringmanholes shall be set in cement mortar to effect a complete watertight junction.

All around the pipe, there shall be a joint of cement mortar 13 mm.thick between it and the bricks. The end of all pipes shall be properly


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built in and neatly finished with cement mortar with themanhole/ancillary structure.

The approximate quantity of cement and spun yarn per joint shallconform to IS 4127.

8.6 After sufficient interval has been allowed for the joints to set andbefore filling the trench, the joints of the pipes and drains shall beproved water tight by filling the pipes with water in between twosuccessive manholes to a level above the top of the highest pipe inthe length to be tested, closing the ends of the sections andmaintaining the water level for a period of one hour with a water headof 1500 mm. and water level dropping not more than 25 mm. duringthat hour.

8.7 All such testing shall be done wholly at the Contractors' expenses,inclusive of apparatus, provision of water, etc., and the rate covers all

the above work.

8.8 The pipes shall be laid to the alignment and gradient shown on theplan. The maximum permissible slopes to the various diameters ofpipes are as follows:

100 mm dia. pipe ... 1 in 40150 mm dia. pipe ... 1 in 60200 mm dia. pipe ... 1 in 80230 mm dia. pipe ... 1 in 90

8.9 Where necessary, pipes shall be laid on a bed of plain cement

concrete 1:3:6 and minimum 150 mm. thick, and shall be projected byproviding haunching upto half the diameter of the pipes. The width ofthe concrete bed for various diameters shall be as follows:

100 mm. dia. pipe ... 380 mm. wide150 mm. dia. pipe ... 450 mm. wide200 mm. dia. pipe ... 600 mm. wide230 mm. dia. pipe ... 700 mm. wide

8.10 BED CONCRETE FOR SEWER LINES

8.11 Where the pipes are laid on a soft soil, with the maximum water table

level, lying at the invert level of the pipe, the pipe shall be bedded inconcrete.

8.12 Haunching -

Where the pipes have to be laid in a soft soil with maximum watertable level above the invert level of pipe, but below the top of thebarrel, the pipe sewers shall be haunched.

8.13 Encasing

The sewer pipes shall be completely encased or surrounded withconcrete.


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a) Where the maximum Water table level is likely to riseabove the top of the barrel.

b) Where the sewers are to be laid adjacent to growingtrees, to avoid damage or displacement to pipe joints orto the pipe likely to be caused by the roots of the trees.

c) Where the top (Overt) of the pipe is less than 1200 mm.under the road surface.

d) Wherever the intensity of loading on pipes areexpected to exceed the normal limit of 1600 kg permetre length for stoneware.

9.0 CONCRETE RCNP2 PIPE DRAINS, LAYING, JOINTING ANDTESTING

9.1 Cement concrete pipes, where called for on the drawings, shall becentrifugally spun reinforced cement concrete pipes of an approvedmanufacture. Pipes shall be true, perfectly sound, free from cracks,cylindrical, straight with a uniform bore throughout. Cracked or warpedpipes with uneven texture shall not be used. These pipes shallconform to Indian Standard 458-NP2 Class.

9.2 The pipe shall be straight and free cracks excepting craze lines. Theend of the pipe shall be square to their longitudinal axis, so that whenplaced in a straight line in the trench, no opening ends in contact shallexceed 1/8" (3 mm.) from 6" (150mm.) including and upto 24" (600mm) dia.

9.3 The outside and inside surface of the pipes shall be smooth dense,and hard, and shall not be coated with cement wash or otherpreparation. The pipes shall be free from local dents and bulgesgreater than 1/8" (3 mm.) in depth and extending over a length in anydirection greater than twice the thickness of the barrel.

9.4 The pipes, before being laid, shall be brushed throughout to removeany soil or stone, that may have accumulated therein, the inside of thesocket and outside of the project being carefully cleaned. For smallpipes, they should be titled up to remove any accumulations.

10.9 The pipes shall then be carefully laid in position.

9.6 Concrete Pipe -

Shall be jointed as described in I.S. 783. After setting out the pipes,the collar shall be centered over the joint and filled in with tarredgaskin, till sufficient space is left on either side of the collar toreceive the mortar (1:2-1 cement :2 washed coarse sand) andcaulked by means of proper tools. All joints shall be finished at anangle of 45 to the longitudinal axis of the pipe on both sides of thecollar. The joint shall be cured for at least 4 days with wetHessian bags.


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10.0 CAST IRON PIPES & FITTINGS (CI S/S -C.I./DE) TO IS 1536 AND1538 FOR LAYING, JOINTING AND TESTING AND FORAPPLICATION IN WATER MAIN-EMBEDDED IN FOUNDATIONSOR THROUGH BUILDINGS -DRAIN-LINES ABOVE FALSECEILINGS, OR BELOW SLAB IN HORIZONTAL POSITIONS.

10.1 All cast iron pipes and fittings shall be truly cylindrical of the clearinternal dia. specified of uniform thickness, smooth and with strongand deep sockets free from flaws, air bubbles, cracks and sandholesand other defects. They shall not be brittle but shall allow for readycutting, chipping and drilling.

10.2 The fittings shall be medium type cast iron conforming to the latest I.S.Specification 1538.

10.3 The pipes shall be lowered into the trench by means of suitable pulleyblocks, shear legs, chain, ropes, etc. After lowering the pipes they

shall be arranged to coincide the centre line with the centre line ofalignment. The pipes shall be laid in position Socket and of all pipesfacing the direction of flow. (This shall also apply to double socketedspecials as per IS).

10.4 Preparing the Joint -

The interior of the sockets and exterior of the spigots shall bethoroughly cleaned and dried. The yarn shall be placed around thespigot of the pipe, and shall be of proper dimensions, to centre thespigot in the socket. Making up of required length by knotting ofstrands of yarn shall not be allowed. Required length of yarn

strands shall be in one place. When a single yarning material isused it shall have an over-lap at the top of not more than 50 mm.When more than a single strand is required for a joint, each strandshall be cut to sufficient length so that the ends will meet onopposite sides of the pipe and not on top or bottom. When the spigotis shoved home, the yarning material shall be driven tightly againstthe inside base or hub of the socket with suitable tools.

10.5 Leading -

The leading of pipes shall be made by means of ropes covered withclay or by using special leading rings. Lead shall be heated to proper

temperature in a melting pot kept in easy reach of the working areaso that molten metal will not be chilled on being carried from themelting pot to the joint (Molten lead at proper pouring temperaturewhen stirred shows a rapid change of colour). The lead used shall bepig lead with 99.8% purity and shall conform to latest I.S.specification.

Before pouring, all scum or dross which may appear on the surface ofthe lead during melting shall be skimmed off. Each joint shall be filledin one continuous poured or imperfectly filed joints shall be burnt outand repoured.

10.5.1 Precaution shall be taken for melting the lead as under :


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i) The pot and the ladle in which lead shall be put shall be cleanand dry.

ii) Sufficient quantity of lead shall be melted.

iii) Lead shall not be overheated.

10.5.2 The approximate depth of pig lead for each joint of Cast Iron pipesand fittings shall be as under with a tolerance of + 5% :-

Dia of pipe Depth of lead(Min)

80 mm. to 125 mm. dia. 45mm.150 mm. to 250 mm. dia. 50mm.300 mm to 450 mm dia. 55mm.500 mm and 600 mm. dia. 60mm.

10.5.3 Quantity of lead and spun yarn for each joint in cast iron pipes andfittings shall be as under, unless otherwise indicated.

Nominal dia. Lead required Spun yearof pipe(in mm.) per joint required per

[in kg.] (Min) Joint (in Kg) (Min)

80 1.8 0.10100 2.2 0.18125 2.6 0.20

150 3.4 0.20200 5.0 0.30250 6.1 0.35300 7.2 0.48350 8.4 0.60400 9.5 0.75450 14.0 0.95500 15.0 1.00600 19.0 1.20

Note :- The quantity of lead and spun yarn given in the table are provisionaland a variation of 20 percent is permissible. However, the 0 depth of

lead in joints shall be adhered to within the permissible limit of +5%specified above.

10.5.4 After the joints have been run, they must be thoroughly bulked untilthey are perfectly watertight. Caulking of joints will be done after aconvenient length of pipe has been laid and leaded. The leading ringshall first be removed with a flat chisel and the joint caulked roundthree times with caulking tools of increasing thickness and hammer 2to 2.5 Kg. weight. Lead joints shall not be covered till the pipe linesare tested under pressure, but the rest of the pipe lines many becovered to prevent expansion and contraction due to variation intemperature.


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10.5.5 Lead wool joint -

Wherever it is impracticable or dangerous to use cast molten, suchas inverted joints or in wet drainages or under water where there isa need for cold application, joints may be made with caulking leadwool or lead yarn. Joints caulked with lead wool or lead yarn shallwithstand greater displacement than cast lead joints.

10.5.6 i] Approximate weights and depths of lead wool required for each joint of various dia. of Cast Iron pipes and fittings shall be given inthe following table. Just sufficient quantity of spun yarn shallbe put so as to give specified depth of lead wool. A allowance of fivepercent variation in the specified weights and depths shall bepermissible.

Diameter of pipe Wt. of lead Depth of leadin mm. wool in kg wool spun yarn

[min] required in mm.[min]

80 0.80 19100 0.90 19125 1.25 20150 1.60 23200 2.05 23250 2.95 25300 3.50 25350 4.65 29400 5.70 31

450 6.70 32500 8.30 33600 10.00 35

10.5.6 ii] Jointing shall be made of with caulking lead wool or yarn inserted instrings of not less than 5mm. thick and the caulking shall be repeatedwith each turn of lead wool or yarn. The whole of the lead wool oryarn shall be compressed into a dense mass. When working with leadwool, it is very important to use caulking tools of appropriate thicknessto fill the joint space to thoroughly consolidate the materials from theback to the front of the socket.

10.6 Jointing Flanged Pipe -

The pipes and fittings shall be accurately aligned in the back. The jointing materials shall be inserted in between the flanges and thenuts shall be carefully tightened, in opposite pairs, until the joint ringis only just sufficiently compressed between the flanges to ensurewater tightness of the joint under the desired water pressure.

The packing used should be rubber insertion cloth three-ply and ofapproved thickness. The packing should be of the full diameter of theflange with proper pipe hole and bolt hole neat and even at boththe inner and outer edges. Where the flange is not fully faced, thepacking may be of the dimension of the facing strip only. Its properplacing should be tested before another pipe is joined on.


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10.7 The led joints shall be tested to a pressure of 150 1bs/sq. inchminimum [10.54 kg./sq.cm] or such head as otherwise specified afterbeing caulked and should any leakage occur, the leaking joints shallbe remade and section re-tested at contractor's expenses, untilsatisfactory results are established.

10.8 Water Pressure Mains -

Shall conform to IS 1538 - 1967 Class LA as specified in theschedule. They shall be laid, jointed, and tested along with Cast Ironpipes as described in the specification for Cast Iron S/S pipes.

After each section of the pipe line has been completed it shall betested for water tightness before being covered. This can be doneby closing each end, by means of a valve or blank flange, or plugand fill the pipe with water. The pressure should then be raised by

means of a small hand operated pump till it registers fiftypercent more than the 150 p. s. i. [10.54kg./Sq. cm] and the testpressure should be ascertained by means of a reliable gauge. Whenthe pipe is laid on any appreciable gradient, the test should becarried out at the lower end of the section with an air vent atouter end. Any leaking joint should be made good and the abovetest reapplied until no further leaks are apparent.

10.9 HDPE Pipe

HDPE Pipes & Fittings shall be conforming to the following

Indian standards.

1. IS 4984. Specification for High Density polyethylene pipe forpottable water supply, sewage and industrial sewage.

2. IS 8360. Specifications for HDPE fabricated fittings for watersupply. (Part I & III).

The work shall be carried out strictly as per standard engineeringpractice & manufacturers specifications and as per instructions ofArchitects / Consultant.

10.10 Copper Pipework

Copper pipes shall conform to BS 2871 Part-1.

Dimensions and working pressure for Half Hard Copper Tubes.

NominalTubeSizeMm

NominalThicknes

Mm

Max.WorkingPressure

Bar

Calculated

BurstingPressure

Bar

SafeWorkingPressure

P.S.I.

TensileStrength

Min.N/mm

Elongation

5/65V so Mm

%12 0.6 63 265 840 250 30


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15 0.7 58 240 76022 0.9 51 215 61028 0.9 40 165 51535 1.2 42 175 51542 1.2 35 145 510

54 1.2 27 110 45067 1.2 20 80 41076 1.5 24 100 385

Copper fittings shall be of an approved make and shall bear themanufacturers trademark. Fittings for copper pipes shall includecouplings, bends, tees, reducers, nipples, unions, bushes andthe like.

Pipes and fittings shall be jointed with copper brazing with 95%silverite. Pipes shall be fixed in accordance with the layouts and

to the alignments shown on drawings and all care taken to avoidair pockets.

Solder for jointing shall be as recommended by the pipemanufacturer. End feed lead for solder wire shall conform to BS219 Grade 99C. Brazing shall be carried out on end feed fittingswith lead free solder wire and integral solder ring fittingscontaining ample solder and not requiring end feeding.

Connections between copper and galvanized mild steel pipesand connections to valves and taps shall be carried out with De-Zincified Resistance (DNR) fittings.

Copper pipes shall be cut with tube cutters and bars removedand cleaned outside to bright metal with medium grade emerycloth or sandpaper. Fittings shall also be cleaned inside to brightmetal in the same way with all emery dust and metal particlesbrushed away. Flux shall be applied evenly by brush to theoutsides of pipes and insides of fittings after which the fittingshall be slipped on to the pipe, twisted to distribute the flux andsoldered immediately before moisture collects in the flux. Jointsshall be heated evenly, filled with approved solder and allexcess solder wiped clean.

11.0 SOIL, WASTE, RAIN-WATER, VENT AND ANTI - SYPHONAGEPIPES & FITTINGS.

11.1 Material and Fixing -

All soil, waste and anti-syphonage pipes and fittings used withinSunken floor areas or within plumbing shafts vertical run, shall besand cast iron socket and spigot conforming to IS 1729 - or itssubsequent revision. All cast iron pipes and fittings shall be ofthe best approved Indian make of soil variety and hot dipped in Dr.Angus Smith Solution and free from flaws, air bubbles, cracks, sand

holes and other defects truly cylindrical and in uniform thickness.They shall not be brittle but shall allow for heavy cutting, chipping and


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drilling, and shall not be less than the diameter, mentioned in theschedule of quantities and shall be fixed against the wall onspecial `U' clamps- 25 mm. wide, 3 mm. thick and hot dip galvanizedby means bound headed flat nail of 8 mm. dia. on brick wall. In caseof hollow block wall 50 x 50 x 80 mm. long wooden gutties soaked insolignum should be first fixed and then flat nails should be basedand nails painted with two coats of paint.

11.2 JOINTS

Jointing shall be carried out with molten lead. The spigot of the pipemust be forced well home into its socket and must be entered, so thatthe joint may be of even thickness all round. At least, one completelap of clean white hemp spun yarn shall be drawn into the bottom ofthe socket without being forced through the joint into. As many lapsas may be needed to leave the space of not less than 25 mm. for the

lead shall than be poured into the joint and caulked tight. The jointsshall then be run with molten lead in sufficient quantity so thatafter being caulked solid, the lead may project 3 mm. beyond theface of the socket against the outside of the spigot but must beflush with the outside edge of the socket.

11.3 Clean outs at the head of cast Iron S/S horizontal pipes running underthe floor shall be of cast Brass screwed in type. Floor and wall cleanouts shall be of cast brass screwed type. The connection pieces shallbe of G.I. threaded to suit the clean out with lead caulked joint.

11.4 Inspection chambers, gully traps, etc. , within the building shall be of

`Patel Pattern' cast iron with bolts, nuts to close the cover, all to befabricated as per actual requirement, if so specified.

12.5 Supports, pedestals and base for inspection chambers gully traps andpipes shall be in 1:3:6 cement concrete mix.

11.6 Pipe sleeves and inserts, etc., through RCC walls either external orinternal shall be of cast Iron or M.S. provided with water bar flange.

11.7 During installation openings of pipes shall be plugged with wood cutinto required shape of gunny bags and to be maintained free fromdirt.

10.9 G.I. waste pipes and fittings shall be of heavy class with G.I. unions,tail pieces, reducers and connections to be provided between joints toeither read or Cast Iron pipes.

11.9 The size of branch waste pipes for different fittings shall be as follows:

Lavatory Basin 32 mm. dia. [1.5"]Urinal 40 mm. dia. [1.5"]Sink 40 mm. dia. [1.5"]Nahani Trap 80 mm. dia. [3.0"]


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Special Floor Trap 80 or 100 mm.as required with bolted aluminiumgrating in 25 x 25 M.S. angle.

11.10 W.C. pan connectors shall be to suit the requirements as per drawing,with 40 mm. Vent horn for connection to the anti-syphonage pipewith pan connector of cast iron or lead.

11.11 Connection to the sewage or storm water collection sumps to beperfectly water tight and as specified.

11.12 Rainwater flashing shall be made as per details with cast Iron domeshape grating and extension piece .

11.13 All Roof drain pipes and fittings shall be soil pipe variety conformingto IS 1729. This shall apply to pipes outside building or within thebuilding or separate shafts.

11.14 The floor traps for toilet blocks shall be cast iron with C.P. brassgrating, bolted down design.

11.15 Bathroom C. P. grating shall be of bolted down design out of heavycast brass with the chromium plating of the best approved standard.

11.16 Cast iron gratings shall be flat with perfect edge of the best qualityprocurable of the specified width and thickness and in the availablelengths.

11.17 Spigotted and socketed 80 mm. and 150 mm. cast iron pipes shall beof heavy pattern for the portion below the floor and embedded and

laid over 150 mm. cement concrete 1:4:8, the width of the concretebeing :-

80 mm. dia. ... 320 mm. wide100 mm. dia. ... 400 mm. wide150 mm. dia. ... 450 mm. wide200 mm. dia. ... 600 mm. wide

11.18 The connection between the main pipe and branch pipes shall bemade by using branches and bends with access doors for cleaning.

11.19 Floor trap shall be provided with 25 mm. dia. puff pipe where the

length of the waste in more than 1.80 meter or the floor trap isconnected to a waste stack through bends.

11.20 The waste from lavatories, kitchen, basins, sinks, baths and otherfloor traps shall be separately connected to respective waste stack ofupper floor. The waste stack of lavatories will be connected directly tomanhole while the waste stack of others shall be separatelydischarged over gully trap.

11.21 The main anti-syphonage pipe shall be of 50 mm. internal diameter.When more than one branch from water closet, sink are connectedwith soil pipe and discharged into it anti-syphonage from the lowestone should pass through and be carried up parallel to the soil fora point 1.5 metres minimum above the highest branch. It can then be


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connected to the soil pipe or it can be carried independently. Theanti-syphonage pipes of all the intermediate floors water closetsshould be joined with main anti-syphonage pipe. The ventilating pipeshall have internal diameter of not less than 50 mm. in all parts andshall be connected with arms of soil pipe on trap through a 45 branch,at a point not less than 75 mm. and not more than 300 mm. from thehighest part of the trap and on the side of the water seal which isnearest to the soil pipe. The jointing shall be done according to thespecifications for piping materials used in soil, vent or connected tothe drain. On no account should lime or lime concrete come in directcontact.

12.0 G.I. PIPES AND FITTINGS

12.1 All supply pipes shall be heavy I.S. quality or equivalent to therequirement of the local authorities or as specified in the schedule.

12.2 Wrought Iron pipes shall be galvanised inside and outside treatedand fixed in accordance with the Municipal requirements. The jointsshall be distributed in strict conformity with the regulations. Theyshall be secured clear of the wall surface by means of G.I. holderbats. All control values, stop cocks, ball valves, bib-cocks shall beof the best approved quality procurable, of heavy cast drawn brass. Allbranches shall have individual control arrangement with fullway [peet]valves, to enable regulation and cut off as required. They shall be ofbest Indian manufacture specified in the schedule of quantities andof tested stampings and bear I. S. I. markings. all fittings shall beeither `RR' or Ring & Cross make.

Laying and fixing

Where pipes have to be cut or re-threaded, ends shall be carefullyfilled out so that no obstruction to bore is offered. In joining the pipes,the inside of the socket and the screwed ends of the pipe shall berubbed over with zinc and few turns of hemp yarn wrapped round thescrewed and of the pipe which shall then be screwed home in thesocket with a pipe wrench. Care must be taken that all pipes andfittings are kept at all times free from dust and dirt during fixing.

12.2.1. The water tightness of joints shall be assured by approvedmethods of jointing material.

12.3 Internal Work -

For internal work G.I. pipes and fittings outside the walls shall befixed either visible by means of standard pattern holder-bat clamps,keeping the pipe clear off the plastered wall by 15 mm. for cold waterand 38 mm. for hot water. Wherever indicated on the drawing or asdirected by the Consultants, chasing of walls shall be done to embedpipes. All pipes and fittings shall be fixed truly vertical andhorizontal or as directed by the Consultants. All embedded coldwater pipes are to be covered with bituminous polyethylenewrapping or equivalent approved by local regulations and NationalBuilding code. All embedded hot water pipes are to be painted with at


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least three coats and wrapped as above and then wrapped withthree ply asbestos twine wrapped tightly around the pipe.

12.3.1 External Work

For external work, G.I. pipes and fittings shall be laid in trenches.They should be wrapped, as specified above. The width of thetrench shall be of minimum width required for working. The pipes laidunderground shall not be less than 600 mm. from the groundlevel. They shall be surrounded on all sides by soft earth. The work ofexcavation and refilling shall be done in accordance with thegeneral specification for earth work.

12.3.2 Where permitted the wrapping of pipe shall be with 0.3 mm. thickFRP tissue as per manufacture's specifications.

12.4 All G.I. pipes and fittings are to be tested to a pressure of 10.54

kg/cm2 for 2 hours to ensure that pipes have proper threads andthat proper materials [such as white zinc and hemp] have beenused in jointings. All leaky joints much be made leak proof bytightening or redoing at Contractor's expense.

12.5 All water fittings shall be of RR or Rings and cross manufacture andshall in all respects comply with the latest Indian StandardSpecification I.S.1239 [part II] The brass fittings shall be fixed in thepipeline in a workman like manner. Care shall be taken to see that

joints shall be repaired, redone or replaced.

12.6 Wherever a G. I. pipe crosses a floor, the cast Iron sleeve with 15

mm. all round clearance and projection by 80 mm. and below thefloor should be provided. On no account should lime or lime concretecome in direct contact with G.I. pipe and fittings. This importantcondition shall not be waived under any circumstances.

13.0 LEAD PIPES

13.1 All lead pipes shall be hydraulic drawn extruded sections and of equalsubstance throughout conforming to I.S.404. Weights and wallthickness of pipes shall be as under :

Nominal Dia Wall thickness Wt. in kgs

In mm. In inches In mm.[Min] Per meter [min] ______ ________ _____________ ______________

32 1.25 2.6 3.2840 1.50 2.6 3.9550 2.00 2.7 5.0775 3.00 2.7 7.48100 4.00 2.7 9.88

13.2 When not supported on bearers, all lead pipes shall be supported bystrong lead tracks at least 40 mm.

[1.50"] wide soldered on to the pipes at suitable intervals.


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13.3 Size of pipe Length of Weight ofin mm joint solder in Kg.

____________ ___________ ____________

15 44 0.3020 65 0.4025 70 0.5032 70 0.6040 70 0.7050 75 1.00The joint shall be water tight and air tight.

13.4 Lead Traps -

1.50" dia. ... 6 lbs/piece2.00" dia. ... 8 lbs/piece

3.00" dia. .... 10 lbs/piece

13.5 Joints

General -

Joints shall be made with special care particularly those betweenpipes of different materials. No joint shall be embedded in a wall.Unless and otherwise specified, joints between various types ofpipes etc. shall be made as described below :-

13.6 Miscellaneous

13.6.1 Ferrules -

For fixing the ferrule, the empty main shall be drilled and tapped at 45degree to the vertical and the ferrule screwed in. The ferule shall beso let in the main that the service pipe leads off in line with the mainbefore curving round right handed into its proper course and allowsfor any settlement of the pipe, which shall then tend to tighten ratherthan loosen the ferrule in the main.

13.6.2 Lead connection pipe -

The lead connection pipe shall be of the specified diameter and oflength 45 cm with wiped solder joints including brass unions each of65 mm. long at the ends. It shall have the following approximateweights with a tolerance of 5%.

Service pipe under pressure of 4 kg/sq.cm--------------------------------------------------------------------------Diameter Length Weight

1 2 3---------------------------------------------------------------------------15mm. 45cm. 1.85kg/mtr20mm. 45cm. 2.65kg/mtr-------------------------------------------------------------------------


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13.6.3 The pipes shall be sound and free from laminations, flaws,pronounced extension marks or other imperfections and shall be asfar as possible circular in section, smooth and of uniform wallthickness through out.

14.0 MANHOLE, INSPECTION CHAMBERS, GULLY TRAPS,INTERCEPTING CHAMBERS, DROP CHAMBERS ETC.

14.1 General: Unless otherwise specified, manholes or inspection

chambers of required depth shall be provided on all external drains, atall change of direction of the drain and where branch drain meets themain drain. They shall be of rectangular shape with a clear openingof 900 x 450 mm. Manholes shall be constructed of 230 mm. thickbrick over P.C.C. bedding extending 230 mm. beyond the externalface of the brick wall. Manholes beyond 1200 mm. depth shall beconical in section and circular at top with clear opening of 600 mm.diameter.

Masonry chambers shall be of such size as will allow necessaryexamination and clearance of drains. The minimum internal basesas per schedule of quantities and local bye-laws if any, shall beadhered to.

In the absence of local bye-laws, the requirements stipulated in I.S.4111 [Part-I] code of practice for ancillary structures on seweragesystem, shall be followed.

14.2 Excavate to the sizes and depths required for the manholes.Construct the manholes and refill outer space with selected

excavation materials and dispose off surplus earth, as specified in"Excavation" 14.3 The specified size of manholes and chambersrefers to inside dimensions. Build the manholes and chambers to thesizes and depths specified with brick wall in cement mortar asspecified.

14.3 The manhole shall be built on a base of concrete of thickness of atleast 150mm. for manholes upto 1000 mm. depths, 230mm. formanholes from 1000mm. to 2000 mm. depth and 300 mm. formanholes of greater depths. For special soil conditions, the thicknesshas to be as per structural design.

14.3.1 The thickness of walls shall be 230 mm. brickwork upto 1500 mm.depth and 350 mm. for depths greater than 1500 mm. The actualthickness for deeper manholes shall be based on structuralrequirements.

14.3.2 In the case of manholes deeper than 1500 mm. but upto 1800 mm.where conical manholes have been specified, the inside shall be1200 mm. upto 900 mm. below G.L./R.L and then taper off to 600mm at the top, to conform to regulations. For greater depths, theinternal dia. shall be increased as directed as per drawings.

14.3.3 Benching in manholes shall be in P.C.C. 1:2:4 and formed in positionwith necessary channels as required.


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Bench up bottoms in fine cement rising 80mm. above the entirechannel with rounded edge and launched upto the sides, at an angleof 45 degree and rendered in cement and sand [1:3] trowelledsmooth.

Proper cement concrete channel shall be provided at the bottom andthe branches from the various pipes shall discharge in the chamberwith a suitable slope.

14.3.4 In all manholes over 900 mm. in depth, provide and build into wallsapproved cast Iron catch-ring and steps at 300mm. interval beyond450 mm. depth and make good cement rendering around as per I.S.1742.

14.4 Cover the manholes with single seal cast iron coated manhole coverand frame of specified weight and approved make. Fill the seal withprepared manhole grease.

14.5 The top level of the manhole with the cover on must be in line with thefinished ground level. However, if required and the finishedground level is not ascertained during construction of themanhole, the contractor shall temporarily fix the manhole covertill such time the final/paved ground level is established, ortemporarily cover the built up manhole at no extra cost to owner. Incase of any damage to the covers due to traffic or any other reasonsduring the course of the project, or in the maintenance periodattributable to the negligence of the contractor, the same shall bereplaced immediately by the contractor at his own cost. The frameand the cover shall be painted with black Bitumen Anti-corrosive paint.

14.6 Drop Connections: In case the difference in invert levels betweenmain drain and branch line requires a drop more than 600 mm., adrop connection should be provided generally as described below.

Cast iron or stoneware four way junction shall be fixed in position, atright angle to the drop pipe, at the level where branch pipe enters themanholes; provide suitable height of vertical drop pipe terminating intoa plain bend, duly benched into the cement concrete [1:2:]. Access forcleaning the bend should be provided at finished ground level.

14.7 Gully traps in all waste pipes shall be of best quality 150 x 100 or 230

x 150 as indicated and laid on a 150 thick 1:3:6 cement bedding.They shall be enclosed in brick and cement mortar masonry withcement plaster forming as inspection chamber with full size 230 x 300cast iron frame and cover or open grating 300 x 300 as required.Location and details will be indicated in the drawing.

14.8 There shall be 100 mm. dia vent pipes at the sewer trap hember and100 mm. ventilating pipe at the manhole at the head of the drain to berouted aesthetically as directed.

14.9 TRAPS

Exposed trap for all wash basin and urinal in public area shall bechromium plated cast brass.


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14.10 Traps installed in connection with cast iron pipe shall be of the samequality and grade of the pipe; the size of outlet all correspond to thesocket of the pipe receiving it.

14.11 Provide 150 x 100 size heavy cast iron sealed gully trap withextension piece having single or double inlet as shown. whererequired provide cast iron sealed cover, for such trap, secured withthreaded gun metal bolts and felt gaskets.

14.12 An intercepting trap of required size shall be installed in the lastinspection chamber prior to connecting with the public sewer ordisposal system. this chamber shall be about 2000 mm. within theboundary of the property.

15.0 SANITARY FITTINGSAll sanitary fittings shall be as specified in schedule of quantities and

approved by the consultant/Employers.

15.1 All setting and bedding of sanitary fittings shall be done carefully tosuit the required levels. Mortar drops, paint splashes etc. shall beremoved from fittings, walls and floors immediately before these getdry.

15.2 Wooden plugs -

The plugs shall be of hard wood and of size 50 mm. x 38 mm. at atop and of length 50 mm. These shall be fixed on wall in cementmortar 1: 3 (cement : 3 sand), after the plugs are fixed in wall, the

mortar shall be cured till it is set.

15.3 Water Closet Squatting pan (ORISSA type W.C. Pan)

The pan shall be sunk into the floor and embedded in a cushion ofaverage 15cm cement concrete 1:5:10 (1 cement: 5 fine sand : 10graded stone aggregate/brick aggregate 40 c.m. nominal size) asspecified. This concrete shall be left 115 mm. below the top level ofthe pan so as to allow for flooring and its be concrete. The floor shouldbe suitably sloped so that the waste water is drained into the pan. thepan shall be provided with a 100 mm. "p" or "s" trap with anapproximately 50 mm. seal. The joint between the pan and the trap

shall be made leak proof with cement mortar 1:1 cement : 1 finesand).

15.4 Wall Hung Water Closets -

Wall hung box rim closets having back inlet and "p" trap outlet shallbe fixed an appropriate cast iron or M.S. BRACKETS of suitabledesign to suite the thickness of toilet wall and ensure that the chair isself supporting and independent of the wall.

15.5 Plastic Seat and Cover -

The Seat shall be fixed to the pan by mean of two 8 mm. dia corrosionresistant C.P. hinge bolts with a minimum length of shank of 65 mm.


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and threaded to within 15 mm. of the head. Each bolt shall beprovided with two suitably shaped washers of rubber of or of othersimilar material for adjusting the level of the seat while fixing it to thecloset. In addition one 8 mm. non/ferrous metal of stainless washershall be provided with each bolt. The maximum external diameter ofthe washers fixed on the underside of the pan shall not be greaterthan 25 mm. One arm of the hinge in each bolt shall be fixed to theunderside of the seat by three nos. 20 mm. long C.P. screws.The other arm of the hinges shall be fixed to the underside of thecover flush with the surface by means of 3 nos. 10 mm. long C. P.Screws.

15.6 Bowl Pattern Lip Urinals -

Urinals shall be fixed in position by using screws, and shall be at aheight of 65 mm. from the floor level to the top of the lip of urinal,unless otherwise directed. The wooden plugs shall be of the size as

in 15:2 and shall be fixed in the wall in cement mortar 1 : 3 ( 1cement : 3 fine sand).

15.7 Each urinal shall be connected to 32 mm. dia lead waste pipe whichshall discharge into the channel or floor trap. The connectionbetween the urinal and flush or waste pipe shall be made by meansof C.P. Bottle Trap heavy type.

15.7.1 All urinal pans will have individual flush valves of approved type andmake.

15.7.2 All connections shall be made leak proof.

15.7.3 At specific instances semi stall, full stall or squatting slab urinals maybe specified in the schedule and/or drawings.

Semi stall urinal pans should have approved type concealed chairbrackets and accessories as demanded. The bottle Traps should bemade of PVC/HDPE extruded section to be free from action of acidetc. The fixing of the units shall be as per manufacturer's instructions.

15.7.4 Spreaders, intel, outlet connections shall be prepared to actual sitemeasurement, to ensure proper verticality and elegance. These shallbe full bore and shall not form any dents.

15.8 Wash Basin -

The basin shall be supported on a pair of concealed cast iron bracketsfixed in cement mortar, 1 : 3 (1 cement : 3 coarse sand). The cast ironbrackets shall conform to IS 775. The wall plaster on the rear shall becut to rest over the top edge of the basin. After fixing the basin,plaster shall be made good and surface finished to match with theexisting one.

The C.P. brass trap union shall be connected to 32 mm. dia wastepipe which shall be suitably bent towards the wall and which shalldischarge direct into the gully trap. C. P. brass trap and union maynot be provided where the surface drain or a floor trap is placed


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directly under the basin and the waste is discharged into itvertically, if so desired.

The height of the front edge of the wash basin from the floor level shallbe 80 cms.

15.9 Kitchen and Laboratory Sink -

Para 16.8 shall apply except that C.P. brass trap and union shall beconnected to 40 mm. nominal bore waste pipe instead of 32 mm.nominal bore which shall be suitably bent towards the wall.

15.10 Glass Self Unit -

The brackets of the unit shall be fixed with C.P brass screws towooden plugs firmly embedded in the wall with cement mortar 1:3 (1cement : 3 coarse sand).

The height of the glass shelf above the floor level shall be 115 cmunless otherwise specified or shown in drawings.

15.11 Towel Rail -

The bracketed of the towel rail shall be fixed by means of C.P brassScrews to wooden plugs firmly embedded in the wall with cementmortar 1 : 3 (1 cement : 3 coarse sand).

The height of the towel rail above the floor level shall be 750 mm.unless otherwise specified or shown in drawings.

15.12 Toilet Paper Holder -

It shall be fixed in position by means of C.P screws and wooden plugsembedded in the wall with cement mortar 1 : 3 (1 cement : 3 coarsesand).

15.13 Recess type items shall be placed in position while other civil worksare in progress.

16.0 HANGERS AND SUPPORTS

16.1 General:-

Provided proper solid angle iron/channel section. supports for allpipes complete with clamps. Wherever insulation comes, providedwooden guide to support pipe on the angle iron hanger / supports. Ingeneral where a bunch of pipes run as far as possible MS platesinserts are provided in the beams / slabs to facilitate welding ofangle iron supports. For attachment in concrete, use "DASH"fasteners or Anchor plug type inserts or equivalent. Providehangers within 1 mtr. of all changes in direction of mains and aminimum of 3 hangers per expansion bend. provide all additionalstructural steel angels, channel or other members not specificallyshown but are required for proper support.


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16.2 Where necessary additional hangers to be provided to arrest waterhammers or hydraulic resonance with proper rubber padding.

16.3 Space hangers, as noted below, except on all soil pipe which shallhave a hanger of multiple fittings, sufficient hangers shall be providedto maintain proper slope without sagging; in case of anglesuspended lines, the following is suggested :

A) Pipe sizes Hanger Road Dia

20 mm. through 50 mm. 10 mm.63 mm. through 125 mm 13 mm.150 mm. and over 16 mm.

B) Pipe Sizes Spacing of supports

13 mm. to 20 mm. 1500 mm. apart

25 mm. to 38 mm. 1800 mm. apart50 mm. and above 2000 mm. apart as perI.S.

16.4 Provided floor stands, wall brackets or masonry piers etc. for all linesrunning near the floor near walls so that those lines can be properlysupported or suspended from the walls or floors. pipe lines, nearconcrete or masonry walls may be hung also by hangers carried fromwall brackets at a higher level than pipe. Hanging of one pipe fromanother is prohibited.

16.5 Hangers : -

Clevis or band type hangers shall be provided. Hot water piping are tobe provided with suspended supported as far as possible. Straphangers are not permitted and clamps should be of removable type.

16.6 Insulated Hot Water Piping : -

A 38 mm. thick timber support for direct support of hot water line isrequired. Timber supports are to rest on brackets.

17.0 VALVES AND PRESSURE GAUGES

17.1 Pressure gauges shall have not less than 115 mm. dial, 10 mm gas

threads, brass body syphon and gauge cock of 10 mm. size. Dialranges shall be adequate for the pressures encountered and asspecified.

17.2 Provided valves on branch pipe connection to mains and atconnection to equipment where indicated. All valves are to belocated for easy access and are to be full bore of pipe connectedtogether. Support all valves wherever necessary. Valves are to be asper I.S 780 (Class I) for cast iron sluice valves and to I.S 778 for G.M valves and tested and approved by local authorities as perbye-laws in force.


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17.3 Valve Schedules : -

Service Type Size Rating Ends Materials

Water,oil Gate 65mm. 20 kg/ Screwed Bronzeair,steam dia & sq.cm.low underpressure)

Water Gate 80mm. 40 kg/ Flanged C.I.Bodydia & sq.cm. bronzeunder trim

Gas Gate 65mm. 40 kg/ Flanged Bronzedia & sq.cm. SSunder spindle

& trim

Water,oil Globe & 65mm. 20 kg/ Screwed Bronzeair, gas, angle dia & sq.cm.steam(low underpressure)

Water Globe 65mm. 20 kg/ Screwed Bronzedia & sq. cm.under

Service Type Size Rating Ends Materials

Water Globe 65mm. 20 kg/ Flanged Iron& dia & sq. cm. bodyangle under bronze

trim

Water Hori- 65mm. 20 kg/ Screwed Bronzezontal dia & sq.cm.& ver- underticalcheck

Water - do - 65mm. 20kg/ Flanged Iron

and sq.cm. bodyunder bronze

trim

17.4 All globe and check valves shall have working parts suitable for hotand cold water, oil or gas as required. Valves shall be tagged withpermanent label under hand wheel indicating type and duty.

17.5 All valves over 150 mm. dia. in equipment rooms located over 2000mm. above floor shall be provided with chain wheels with chainsextending upto 1800 mm. above floor.


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17.6 Where indicated and specified, angle pattern stop cocks, at each hotand cold water inlet to be provided. They should be anti-scaldingpattern same as faucets of approved manufacture.

17.7 Foot Valves :-

Provide cast iron body with brass disc and strainers of approvedquality.

17.8 Strainers :-

Cast iron pot strainer with G.M. mesh screen in perforated brassstrainer body of approved manufacture are to be provided beforevalves. Provide each Strainer with a cock for blowing down.Screening area of the strainer shall be minimum of 5 times more thanpipe area, with 1 mm. maximum size holes.

17.9 Air Eliminators :-

Provide air vents, consisting of gate valves, where shown. Eachvalves outlet shall be piped to nearby drain.

17.10 All tapping from distributors from main feeder shall have isolationsvalves in shafts, to ensure proper facility for maintenance and minisize the areas of cut off during repairs.

18.0 CUTTING, PATCHING, REPAIRING AND MAKING GOOD

18.1 Cuttings, patching and repairing required for the proper installation

and completion of the work, specified in each division, includingchasing, plastering masonry work, concrete work etc. and makinggood shall be carried out by the contractor wherever required. Holeswhich are cut oversize shall be refilled, so that a tight fit is obtainedaround the pipe or other object passing through.

Any damages to waterproofed location should not be patched up,without rectification by the water proofing agency/(specialistcontractor) to ensure his guarantee.

Indiscriminate cutting and patching work should be avoided by propercoordinated planning well in advance and planning the sleeves etc.

while works of other agencies are in progress.

19.0 EQUIPMENT PROTECTION

19.1 All pipe and conduit openings shall be kept closed by means of plugsor caps to prevent the entrance of foreign matter. All piping, conduit,fixture, equipment or apparatus shall be protected from damages.Any item damaged prior to final completion of work shall be restoredto its original conditions or replaced at no expense to the Employer.

19.2 Accessibility

The installation of valves, thermo meters, clean out fitting and otherindicating equipment or specialists requiring frequent reading,


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adjustments, inspections, repairs, removal or replacement, shall beconveniently and accessibly located. Thermometers and gauges shallbe installed so as to be easily read from the floor.

19.3 Inserts and Sleeves :-

19.3.1 General :-

In advance of placing of concrete slabs or constructions of walls,furnish and set inserts and sleeves necessary to complete the work.Cost of cutting or patching made necessary as a result of thisoperation shall be at not expense to the Gujarat Lease Financing Ltd.Openings shall be made as per Structural Consultant's approval.

19.3.2 Pipe Sleeves :-

a) Wall Sleeves:

Cast iron, G.I. or M. S. black pipe wall sleeves in cold storeand pipe for cable, conduits, gas pipes etc. are to be insideflush with wall on both sides. Sleeves shall be large enoughin diameter to provide 15 mm. clearance around pipe forinsulation. Exterior wall sleeves for cable entry / pipe / earthingstrips etc. shall be flush with wall on both sides. Sleeves shallbe large enough to allow caulking from outside using leadwool.

b) Floor Sleeves:

Interior floor sleeves shall be of cast iron extending 50 mm.more above finished floor. All pipes passing through sleevesshall be caulked with asbestos rope and finish with cementmortar. Insulated pipes shall have insulation butted to floorsleeves and sealed with insulating cement on both sides.

c) Interior Floor Sleeves :

Interior floor sleeves for kitchen areas shall be GI steel pipeextending 50 mm. above finished floor. Caulking shall be samefor general areas.

Notes :- Floor on grade sleeves shall be the same as exteriorwall sleeves, caulked and made water tight.

Exception : Chilled water or refrigerant piping insulation shall be

run continuos through the sleeves and caulked.

20.0 EQUIPMENT, MATERIAL AND WORKMANSHIP

20.1 Each piece of equipment shall meet the detailed requirements of thecontract documents and that it is suitable for the installation shown.The Consultant Shall be appraised of any short comings found in thetender documents. Each piece of equipment furnished shall meetall detailed requirements of the contract documents. Equipments not


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meeting all requirements will not be provided, even though specifiedalong with other manufactures, in the list of approved makes.

20.2 Where two or more units of the same class are furnished, product ofthe same manufacture has to be used for similarly and easyreplacement of spares. Furnish all materials and equipment, new andfree from defects and of size, make, type and quality herein specifiedor approved by the consultant. All shall be installed in a near andworkmanlike manner.

21.0 CLEANING, OPERATION AND TESTS

21.1 Plumbing equipment fixtures, piping etc. shall be free of stampings,markings (except those required by codes) iron cuttings and otherforeign materials.

21.2 Hot, cold and drinking water systems shall be cleaned thoroughly,

filled and flushed with water.

21.3 The entire mechanical apparatus shall operate at full capacity withoutobjectionable noise or vibration.

21.4 The system has to be periodically given the tests specified in thepresence of site engineer and the client's representative as hereinspecified.

All test equipments, accessories, materials and labour necessary forconducting the tests and for inspection and repair work shall bearranged well in advance of the test date.

After shortcomings are repaired or defective items replaced the testwill be repeated until the entire system found satisfactory. If the localregulations insist on similar tests before approving authorities, thesame shall be complied with and acceptance from the authoritieslodged with the Consultants/Owner.

21.5 The entire system of soil, waste and vent piping to be tested withwater after the roughing-in is completed and before the fixture are set.After setting the fixtures, provide smoke test, after sealing all types.

21.6 Water Test entire system or sections of system by closing all

openings in piping except the highest opening and filling system withwater to the point of overflow. If the system is tested in sections, plugeach opening except the highest opening of the section filled withwater. Keep the water in system or in the specific section under testfor atleast 45 minutes before inspection starts with test pressure/headlasting for two hours. The system must be tight at all joints.

21.7 Final Test :

After fixtures are set, test system with smoke as follows:


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Smoke Test :

Fill traps with water, then introduce into system a pungent thick smokeproduced by one or more smoke machines. When smoke appears atstacks on the roof, plug, stacks and allow pressure of 25 mm. watercolumn to build up in system. Maintain pressure for 15 minutes beforeinspection starts. The system shall be tight at all joints. Sulphur smokeshall not be allowed.

21.8 Test all down spouts or rain headers and their branches within thebuilding by water as described for the above soil, waste and ventsystem.

21.9 All Water Piping :

Hydro-static test 10.54 Kg/cm2 for a minimum of two hours withoutdrop in pressure as required.

21.10 Gas Piping :

Subject each completed section of the system to test of 14 Kg/cm2 bywater and then blow compressed air to remove water after drainingout the pipe.

21.11 All tests on below grade lines shall be continued until backfill on suchline is completed to disclose any damages caused by backfilling.

21.12 All systems shall be tested in section as required to expedite the workor other trades and meet construction schedules and final test on

completion.

21.13 On completion of the works, the following tests shall be performed tothe satisfaction of the consultants/client's representative before issueof Virtual Completion Certificate, if so required.

a) Smoke test.b) Hydraulic test.c) Self induced test for fixtures.d) Tests for anti-syphonages system.e) Pump rating and output.f) Inspection of all units and fixtures.

21.14 The contractor shall arrange on his own initiative for similar testsduring the progress of works, to ensure that there are no defects inmaterial/workmanship in portions of work to be concealed orembedded under the floor or walls in ceiling.

21.14.1 Air or Smoke Test :-

A uniform gauge pressure of 0.5 Kg/cm2 or sufficient to balance acolumn of mercury 250 mm. in height. This pressure will be held for aperiod of at least 15 minutes without any loss of pressure.


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21.14.2 Hydraulic Test :-

i) All underground drains for a static head of 2 metreswith the down stream and plugged.

ii) All vertical drains also for a static head of 2 mtrs.

iii) Water lines for 11.25 Kg/cm2 test pressure forminimum 24 hours.

iv) Section wise isolation and test.

v) Air-locks.

21.14.3 Manholes :-

Clean the manhole free from all dirt, soil and other extraneousmaterial and wash it with water to clear all mortar, mud etc. The pipeoutlets to be plugged with gunny bags or wooden stopper to ensureproper closure. Clean water from an approved source shall be filledinto the manhole to depth not exceeding 1.2 mtrs, as directed by theEngineer-In-Charge and the same is kept for about 2 hours. Testshould be conducted early in the morning before 9 a.m so thattendency for evaporation losses are minimum.

21.14.4 Self induced test for fixtures:-

All units will be operated individually and the flow checked.

21.14.5 Inspection of individual units and fixtures for visible defects inshape etc.

21.14.6 Test for anti-symphonage system :-

Units on a single system will all be operated to check up the effect onsymphonage.

21.14.7 Pump rating and output :-

Checking discharge and terminal head both at the free end as wellas the overhead storage tank.

22.0 PAINTING

22.1 Equipments :-

After complete installation and testing all the equipments includingmounting frames etc. shall be painted with 3 coats of paints, as percolour code required by the client or a directed by the consultants.


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22.2 Piping :-

After all the piping has been installed and tested, the piping shall begiven one coat of anti-corrosive paint followed by two coats of paintas per colour code required by the client or as directed by theconsultants.

Note :-

1) All black pipes to be painted fully. G.I. pipes shallhave 150 mm. wide bend at 500 mm. intervals.

2) Final coat to be given after one month of running ofpipe.

22.3 Colour code :-

Identification of the pipe lines shall be as per standard colourprescribed by IS : 2379.

23.0 EQUIPMENT AND PIPING IDENTIFICATION

23.1 Pipe Markers :-

Each piping system shall be provided with a name plate properlyclamped or stenciled. Letters are to be 80 mm. if 3 mtrs. above thefloor and 50 mm. minimum if below that height. Name plates on

parallel groups of pipes etc. shall be neatly lined up. Wording oflettering shall correspond to the equipment designations used inpiping legend and shall be as approved. Name plate to be of G.Isheets (gauge 20 SWG on 25 x 25 mm. angle) secured on to sheetmetal and angle iron to be welded on main pipe. In case of insulatedpipe the 25 x 25 mm. angle bracket should be projecting beyondinsulation thickness.

23.2 Valve Register :-

To be submitted in triplicate along with location and identificationnumber in final drawing to be furnished by contractor.

24.0 TOOLS AND MATERIALS AND STORAGE

24.1 The Contractor at his own cost and charge shall provide all materials,tools, tackles, measure, scaffolding, labour and water, necessary forthe completion of the whole work in all respect.

24.2 The contractor shall pay the fees for testing the materials to localauthorities, or other statutory authorities.

24.3 The Contractor will obtain, from time to time various permissionsand the completion certificates as per rules of all local and statutoryauthorities.


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24.4 The contractor shall arrange for the material and storage facility withthe Building Contractor.

24.5 Any materials, brought at site, shall not be removed without the writtenauthority of the Consultants and Clients when the Contractors shallhave received payment in respect of any certificate in which it isstated that the value of any unfixed materials on the work hasbeen taken into account such materials shall become the property ofEmployer and the Contractor shall be liable for any loss or damagehereto.

24.6 The Contractor shall insure the work against damages, for such sumas the Employer may, from time to time, direct. All Insurance Policiesare to be taken out in the joint name of the Employer and theContractor in an office selected by the Employer and all policies andreceipts shall be deposited with the Employer.

24.7 All the brackets and hangers for pipe shall be fixed to the wall orR.C.C slab using `Dash' fasteners, wherever necessary. Exposingreinforcement bars for hooking will not be permitted.

24.8 The amount shown against the provisional item or/andcontingencies in the schedule are provisional and for the estimatingpurposes only and contractor is neither concerned for its executionnot to charge any commission on these items. Owner reserves theright to get the work done for these items through a separate andindependent agency.

24.9 Surplus material from the site shall be carted away by the Contractorwithout any cost to the Employer and the storage space providing tothe Contractor shall be handed over to all employer clean and readyfor occupation, free from all encumbrances.

25.0 GENERAL SERVICES

The Contractor shall pay the fees for testing the materials by theMunicipal Corporation.

The Contractor will process and arrange from time to time variouspermissions and obtain the drainage completion certificate and

adequate water supply certificate will be obtained by Owner /Architect, under the rules of the local authorities.

26.0 BUREAU OF STANDARDS, COLOUR CODE

In industrial and multi disciplinary installations like Hotels andHospitals, additional item may be added for other systems. Toindicate the class of its contents, each pipe and appurtenancesconnected therewith shall be marked as under.

i] Water Drinking -Sea Greenii] Non Potable Water -orangeiii] Treated effluent -Admirably Blueiv] Fire installation -Fire Red


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v] Steam & Hot water -Silver Grayvi] Compressed Air -Sky Bluevii] Vacuum -Canary Yellowviii] Liquified petroleum Gas -Redix] Diesel oils -Light Brownx] Sprinkler pipes -Dark Violet


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LIST OF APPROVED BRANDS / MAKES FOR PLUMBING SYSTEM

NOTE :

1. The Contractor should obtained prior approval from `Engineer-in-Charge /

Consultant before placing order for any specific material / Agencies. TheContractor shall make a detailed submittal with catalogues and highlighted

proposed specifications as well as full details of specialised works.

2. The Engineer-in-Charge may approve any equivalent material subject to

proof being offered by contractor for equivalence to the satisfaction of the

Engineer-in-Charge / Consultant.

3. The tender shall indicate the make of material out of approved list

indicated. If not, the choice of make of material to be put to work will rest

with the Engineer-In-Charge.

4. To comply with the Bureau of Standards Act enacted by Parliament thefixtures selected should have ISI marking alongwith brand name ofmanufacturer.

5. Fittings without ISI make if selected as a Functional / aesthetic requirementshould be got tested in an approved test House prior to installation.

1.0 Cast Iron Pipes and ,HEP ,NECO

fittings I S 3989/I S 1729

2.0 R.C. NP2 Pipes Indian Hume PipeCompany, Pranali Enterprises.

3.0 Stoneware Pipes and Trimurti, TM, Rajura.fittings -

4.0 Cast Iron LA class - I.T.S Company, Kesoram,Pressure Pipes and fittings Electrical Steel Casting.

5.0 G.I. Pipes-Heavy Grade - Zenith,Jindal.Tata

(C Class) as per IS 1239.

6.0 Gun Metal Valves, and Leder, Zolotofittings

7.0 G.I.Fittings. Unique, Zoloto

8.0 C. I. Sluice valves, check Kirloskar, Zoloto.valves etc.

8(a) Butterfly Valves C & R, Audco


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9. Chromium Plated Brass ESSESS, Jaquar.Fittings

9a Bottle Traps and Waste fittings ESSCO, JAGUAR,

10.A Vitreous China Pottery Hindustan, EID Parry

11. Fire clay sinks Parasuram

12. W.C. Seats & Cover Commander ;Patel

13. Stainless Steel Sinks NIRALI, Neelkanth

14. Full Stall Urinals Khodiyar or Parasuram

15. Polysterine & FRP Low Level Champion Commander, HindwareCistern

16. C.P. Spreaders. (Full bore made to measurement)

17. Flush Valves ESSESS, Jaquar

18. Water Meter Leeds, Capstan, Atlas,

19. Water Storage Heaters Spherehot, Bajaj

20. Pressure Reducing Valves HAWA, Zoloto

21. Electric Pumps for cold water Kirloskar, HBD, Grundfos,supply

22. Sump Pumps DARLING ,HBD, Grundfos

23. Motors. Crompton, Kirloskar

24. Starters Crompton, LT-LK, Siemens

25. Fibre reinforced Pratibha Industries or

Manhole Covers equivalent approved.

26. C.I. Manhole covers and grating Ashok Foundary, , NECO

27. Stainless Steel Furnitures Nirali, D line or approvedequivalent.

28. Float/Equilibrium Valves L & K, HINDKO

29. Lead Pipes Standard Metal, HMS Metal.

30. Ball Valves with copper floats L & K, Techno

31. Powder coated Bath fittings Jaguar, Aquel, ESSESS


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32. Pressure guages Figi, H.Guru, Prico

33. PVC Pipes/HDPE Pipes Supreme, Prince,

34. Electronic Senser Contal, ASCON

35. Bath Accessories ESSESS, JAQUAR

36. Copper pipes and fittings IBPL, Rajco.ABC


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LIST OF TENDER DRAWINGS

1) Site plan showing External Services PL 1

2) U G Tank Details PL 2

3) Plan At 76.500 Level ( Plumbing Layout ) PL-3


5) Manhole Details PL 5




9) Toilet block detail PL-9

10) Toilet block detail PL-10

Note: These drawings are tender purpose only. The construction drawings will

be issued during the progress of works.