Specifications Part 1 - Water Supply, Sewerage and Tube Well Works

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directional changes within the trench without recourse to the provision ofspecial bends or anchor blocks. However, the pipe should not be cold bend toa radius less than 20 times the OD of the pipe.8.11.9 The installation of flanged fittings such as connections to sluice/air/gate valvesand hydrant tees etc., requires the use of stub ends (collars/flange adaptorcomplete with backing rings and gasket. Care should be taken when tighteningthese flanges to provide even and balance torque.8.11.10 Provision should be made at all heavy fittings installation points for supports(such as anchoring of the flange in the soil) for the flange joint to avoid thetransfer of valve wheel turning torque on to the PE flange joint.8.11.11 PE pipe is lighter than water. Hence care should be taken for normalinstallations where there could be a possibility of flooding of the trench thus thetrench shall be kept free of water till the jointing has been properly done.8.11.12 However, weights by way of concrete blocks (anchors) are to be provided sothat the PE pipe does not float when suddenly the trench is flooded and the soilsurrounding the pipe is washed away. Thus site conditions study is necessaryto ensure the avoidance of flotation.8.11.13 Pipe embedment backfill shall be stone-free excavated material placed andcompacted to the 95 % maximum dry density.8.12 jointing of pipesThe pipe shall have a jointing system that shall provide for fluid tightness forthe intended service conditions. Appropriate jointing for HDPE pipe as per IS4984 shall be selected considering site and working conditions, pressure andflow or liquid.8.13. Belding :-8.13.1 In case of sandy strata no separate bedding is required. However the bottomface/trench bed where pipe shall be placed shall be compacted to provide aminimum compaction corresponding to 95 % of maximum dry density. The pipebedding should be placed so as to give complete contact between the bottomof the trench and the pipe.8.14 Back Filling8.14.1 Backfilling should be placed in layers not exceeding 15cm thickness per layer,and should be compacted to a minimum of 95% maximum dry density. Therefilling should be done on both sides of pipe together & height difference inearth fill on each side should not be more to cause lateral movement of pipe.8.14.2 Most coarse grained soil are acceptable. This may comprise of gravel or sand.However silty sand, clayey sand, silty and clayey gravel shall not be usedunless proposed to be used in conjunction with gravel or clean sand.8.14.3 It is very important that the pipe zone backfill material dies not wash away ormigrate ink to the native soil. Likewise, potential migration of the native soil into the pipe zone backfill must also be prevented.Urban Administration & Development Department Page 94
8.14.4 Heavy earth moving equipment used for backfilling should not be brought untilthe minimum cover over the pipe is 90 cm in the case of wide trackedbulldozers or 120 cm in the case of wheeled roaders or roller compactors.8.15. Compaction:-8.15.1 Vibratory methods should be used for compaction. Compaction withindistances of 15 cm to l45 cm from the pipe should be usually done with handtempers. The backfill material should be compacted not less than 95 % ofmaximum dry density.8.16 Fittings and specialsAll HDPE fittings/specials shall be fabricated or injection moulded at factory asper IS: 8360 (Part-I & Part-III) and as per IS: 8008 (Part-I to Part-IX) fittings willbe butt welded on the pipes or other fittings by use of heat fusion.8.17 HDPE bends and tee.HDPE bends and tee shall be plain square ended conforming to IS: 8360 (PartI,II&III). Bends may be fabricated by jointing several small section of pipe toreach the required angel. Tees may be moulded or fabricated from pipeselements.8.18 HEPE Reducer must be moulded and shall be plain square ended as per IS:8008 (Part-1 & VII)8.19 HDPE stub ends-HDPE stub ends shall be square ended conforming to IS: 8008 (Part-I & VII)specification stub ends will be welded on the pipe. Flange will be of slip onflange type as given in clause 15.16 below.8.20 Slip on FlangesSlip on flange shall be metallic flanges covered by epoxy coating or plasticpowder coating. Slip-on-flanges shall be conforming to standard matingrelevant flange of valves, pipes etc Nominal pressure rating of flanges shall bePN108.21 Jointing ProcedureJointing between HDPE pipes and specials shall be done as per the latest IS:7643 part II. Method of jointing between the pipes to pipes and pipes tospecials shall be with butt fusion welding using automatic or semi automatic,hydraulically operated, superior quality butt fusion machines which will ensuregood quality butt fusion welding up to of HDPE pipes.8.21.1 The commonly used joints are as follows :-8.21.1.1 Insert type joints.8.21.1.2 Compression fittings.8.21.1.3 Fusion welding.8.21.1.4 Threaded Joints8.21.1.5 Flanged joints, and8.21.1.6 Telescopic joints.8.21.2PE pipes. In corrosive locations plastic fittings are preferred because of theirhigh resistance to corrosion. In less corrosive conditions gun metal fittings areUrban Administration & Development Department Page 95
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GOVERNMENT OF MADHYA PRADESHDEPARTM
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Branch(i) A special form of cast ir
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A valve in which the closure to an
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Sullage waste Water:Spent water fro
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Laying:The approximate positions of
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CHAPTER NO.1CAST IRON SOCKET AND SP
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Socket and spigot pipes Class AWeig
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1.5 .4 Pipe shall be tested hydrost
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1.9.3 Mass (weight) of the various
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Diameter (mm)Weight (approx) kgHeav
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1.9.3.11 Cast iron plugs:-Diameter
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1.12.7 Caulking may be done with pn
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2.5 Thrust Blocks2.5.1 In case of b
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2.9.3 Should any test of the pipe l
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CHAPTER NO.3CAST IRON PIPES AND SPE
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3.4.2.2 Cast iron flanged spigot:-R
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3.4.2.6 All flanged cast iron tees:
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Nominal diameterTable 2.3Refer Tabl
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Table No.3.8DimensionWall thickness
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CHAPTER NO. 4DUCTILE IRON PRESSURE
Page 46 and 47: Nominal Diameter Outer diameter of
Page 48 and 49: 4.3.2.4 Where the coating material
Page 50 and 51: Nominal DiameterDN (mm)Table No. 4.
Page 52 and 53: 4.7.2.3 Lengths of FittingsThe perm
Page 54 and 55: during the jointing operations. As
Page 56 and 57: CHAPTER NO.5:UNPLASTICIZED PVC PIPE
Page 58 and 59: NominaloutsideDiameter(Nominalsize)
Page 60 and 61: 5.10 Handling and storage5.10.1 Bec
Page 62 and 63: a)b) Size of the fitting and the ap
Page 64 and 65: 5.14.5 Trench Bottom5.14.5.1 The tr
Page 66 and 67: CHAPTER NO.6CAST IRON VALVES6.1 App
Page 68 and 69: efore painting. All exposed machine
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Page 72 and 73: 6.4.7 Nominal sizes :-6.4.7.1 The r
Page 74 and 75: Table No.6.6Material for different
Page 76 and 77: CHAPTER -7GALVANIZED IRON PIPES, SP
Page 78 and 79: 7.4.2 Globe Valves- The globe valve
Page 80 and 81: 7.6 Testing of valves:-7.6.1 Genera
Page 82 and 83: NominalBoreDimensions and Nominal M
Page 84 and 85: 7.10 Testing of Pipes :Following te
Page 86 and 87: Nominal BoreMinimum Outside Minimum
Page 88 and 89: 7.15.2.2 Taper Screw Plug TestSocke
Page 90 and 91: 7.20.2 All pipes and fittings shall
Page 92 and 93: S.NoTolerance and ovality is given
Page 94 and 95: 8.7.2 The pipe shall be as uniform
Page 98 and 99: frequently used and in normal or sl
Page 100 and 101: 8.22 Test to Establish Perfectibili
Page 102 and 103: 8.26.6.3 PP Saddles8.26.6.3.1 The b
Page 104 and 105: g Bypass Pipe Carbon Steel IS1239(p
Page 106 and 107: 9.4.1 Coupling Area of jointThis is
Page 108 and 109: Table No. 9.3Hydrostatic Design Pre
Page 110 and 111: polyester belts with a minimum widt
Page 112 and 113: 9.19.4 Straight continues lengths o
Page 114 and 115: Table No. 10.2(Refer Table No.1 IS
Page 116 and 117: 1592-2003. The tolerances on the in
Page 118 and 119: 10.5.2.5 Weight of cast iron plain
Page 120 and 121: 10.5.2.9 Weight of cast iron Plain
Page 122 and 123: 10.8.1.1 Width- The width of the tr
Page 124 and 125: 10.11.2 Cast Iron Detachable Joints
Page 126 and 127: shall be used between the straps an
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Page 132 and 133: 11.3.2 Each pipe and fittings may a
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12.17.6 HandlingFollowing Recommend
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12.17.10 Construction of backfill e
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CHAPTER - 13REINFORCED CEMENT CONCR
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Diameter ThicknessStrength Test Req
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Table 13.5(Refer Clause 8.2 IS 458
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efore the next pipe is laid. Adequa
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13.11.4 The water shall be filled t
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Chapter - 14SEWER APPURTENANCES14.1
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provided with cover of medium duty
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14.3.5.4.3 (c) By drop in previous
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14.5.3.4 Where the diameter of the
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14.7.4 Heavy reinforced concrete co
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14.11 By pass:By pass arrangements
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acetate paper, silt drums, ropes, i
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14.22. Automotive Suction Machine :
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14.25.3 Brick Masonry Chamber : Aft
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15.2.5 Lift: the vertical distance
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ensure that drilling has been done
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accepted deductions (stated as a pe
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described in IS 4031 (Part-5) : 198
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v) Cleat bolt of size M-10vi)vii)Se
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15.17.5.3 To protect persons from i
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15.17.5.19. Wherever a socket or co
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esults in unsuitable sub grade cond
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15.17.14.7 Clear out space shall be
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15.17.15.7.1 Ordinarily no surplus
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Water Supply pipes lines should be
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16.3.3 Failure to remove the ridge
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16.9.12 The cover shall be capable
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17.7 Development of tube-well with
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17.13.4 Fine enough to prevent the
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(iv) No. of slots per m 429(v) % Ar
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Annexure: ADRILLING OF TUBE WELL1.
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particularly those having clay or s
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5.3.2 The shape of the openings sho
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5.7.3.6.1 The contractor shall deve
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STRATACHATANNEXURE-2Mohalla/BastiNa
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LocationApparentResistivelyAB/2Inte
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GRAVEL PACKED TUBE WELLSGAVEL PACKE
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HAND PUMP PLATEFORMUrban Administra
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Urban Administration & Development
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Specifications Part 1 - Water Supply, Sewerage and Tube Well Works

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