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

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shall be used between the straps and the pipe to provide cushioning as well assealing against leakages.10.16.2 The size of the hole drilled in the pipe shall be limited to those given in Table10.14Table 10.14Size of Hole Drilled in pipePipe sizeMaximum Size of Drilled Holemmmm80 and 100 20125 and 150 25200 35250 and above 5010.17 Back Filling and Tamping10.17.1 Back filling shall follow pipe installation as closely as possible to protect pipefrom falling boulder, eliminating possibility of lifting of the pipe due to flooding ofopen trenches and shifting pipe out of line by caved in soil.10.17.2 The soil under the pipe and coupling shall be solidly tamped to provide a firmand continuous support for the pipeline. Temping shall be done either bytamping bars or by using water to consolidate the back fill material.10.17.3 The initial back fill material used shall be free of large stones and dry lumps. Instony areas the material for initial back fill can be shave from the sides of thetrenches. In bogs and marshes, the excavated material is usually little morethan vegetable matter and this should not be used for bedding purposes.10.17.4 The initial back fill shall be placed evenly in a layer of about 100mm thick. Thisshall be properly consolidated and this shall be continued till there is a cushionof at least 300 mm of cover over the pipe.10.17.5 If it is desired to observe the joint or coupling during the testing of mains theyshall be left exposed. Sufficient back fill shall be placed on the pipe to resist themovement due to pressure while testing.10.17.6 Balance of the back fill need not be so carefully selected as the initial material.However, care shall be taken to avoid back filling with large stones which mightdamage the pipe when spaded into the trench.10.17.7 Pipes in trenches on a slope shall have extra attention to make certain thatnewly placed back fill will not become a blind drain in effect because until backfill becomes completely consolidated there is a tendency for ground or surfacewater to move along this looser soil resulting in a loss of support to the pipe. Insuch cases, the back fill should be tamped with extra care and the tampingcontinued in 100 mm layers right up to the ground level.Urban Administration & Development Department Page 124
10.18 Testing10.18.1 It is recommended to test the portions of the line by subjecting to pressure testas in table 10.15, as the laying progresses before the entire line is completed.10.18.1.1 Usually the length of the section to be tested shall not exceed 500m.10.18.2 The pipes shall be tested as specified in IS: 5913-1970 in the factory andhence the purpose of field testing is to check the quality of workman ship andalso to check whether the pipes have been damaged in transits as such, thetest pressure shall be kept as 1.5 times the actual operating pressure, unless ahigher test pressure is specified. However, it may be noted that the testpressure during the field test shall not exceed the values given in Table 10.15Table No.10.15Test Pressure for PipesClass of Pipes Maximum field Test Pressure kgf/cm²5 3.7510 7.5015 11.2520 15.0025 18.7510.18.3 Prior to testing enough back fill shall be placed over the pipeline to resistupward thrust. All thrust blocks forming part of the finished line shall have beensufficiently cured and no temporary bracing shall be used.10.18.4 The open end of the section can be sealed temporarily with an end cap havingan outlet which can serve as an air relief vent10.18.5 The blind face of the end cap shall be properly braced during testing by screwjacks and wooden planks or steel plate.10.18.6 The section of the line to be tested shall be filled with water manually or by alow pressure pump. Air shall be vented from all high spots in the pipelinebefore making the pressure strength test because entrapped air getscompressed and causes difficulty in raising the required pressure.10.18.7 Asbestos cement pipes always absorb a certain amount of water. Therefore,after the line is filled, it should be allowed to stand for 24 h, before pressuretesting and the line shall be again filled.10.18.8 The test pressure shall be gradually raised at the rate of approximately onekg/cm²/min.10.18.9 The duration of the test period if not specified shall be sufficient to make acareful check on the pipeline section.Urban Administration & Development Department Page 125
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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
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Nominal Diameter Outer diameter of
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4.3.2.4 Where the coating material
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Nominal DiameterDN (mm)Table No. 4.
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4.7.2.3 Lengths of FittingsThe perm
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during the jointing operations. As
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CHAPTER NO.5:UNPLASTICIZED PVC PIPE
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NominaloutsideDiameter(Nominalsize)
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5.10 Handling and storage5.10.1 Bec
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a)b) Size of the fitting and the ap
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5.14.5 Trench Bottom5.14.5.1 The tr
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CHAPTER NO.6CAST IRON VALVES6.1 App
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efore painting. All exposed machine
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with the main. For large aqueduct p
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6.4.7 Nominal sizes :-6.4.7.1 The r
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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 96 and 97: directional changes within the tren
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
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Page 130 and 131: CHAPTER NO- 11SALT GLAZED STONEWRE
Page 132 and 133: 11.3.2 Each pipe and fittings may a
Page 134 and 135: on each horizontal rail which is fi
Page 136 and 137: 11.7.7 The joint with cast iron or
Page 138 and 139: CHAPTER NO- 12UNPLASTICIZED NON-PRE
Page 140 and 141: 12.4 Dimensions of Pipes:12.4.1 Mea
Page 142 and 143: 12.8 Trench:-(See Drawing No.3)12.8
Page 144 and 145: 12.13.3 Care should be taken to lea
Page 146 and 147: 12.17.6 HandlingFollowing Recommend
Page 148 and 149: 12.17.10 Construction of backfill e
Page 150 and 151: CHAPTER - 13REINFORCED CEMENT CONCR
Page 152 and 153: Diameter ThicknessStrength Test Req
Page 154 and 155: Table 13.5(Refer Clause 8.2 IS 458
Page 156 and 157: efore the next pipe is laid. Adequa
Page 158 and 159: 13.11.4 The water shall be filled t
Page 160 and 161: Chapter - 14SEWER APPURTENANCES14.1
Page 162 and 163: provided with cover of medium duty
Page 164 and 165: 14.3.5.4.3 (c) By drop in previous
Page 166 and 167: 14.5.3.4 Where the diameter of the
Page 168 and 169: 14.7.4 Heavy reinforced concrete co
Page 170 and 171: 14.11 By pass:By pass arrangements
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Page 174 and 175: 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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