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

More documents

Recommendations

Info

6.4.7 Nominal sizes :-6.4.7.1 The range of nominal valve size (DN) in mm shall be as follows:40, 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 450, 500, 600, 700,800, 900, 1000, 1200, 1400, 1600, 1800 and 2000.6.4.8 Nominal Pressures :-6.4.8.1 Valves shall be designated by nominal pressure (PN) defined as the maximumpermissible working pressure (MPa) at 20 0 C temperature as follows:PN 0.25, PN 0.6, PN 1.0, PN 1.6, PN 2.5 and PN 4.06.4.8.2 The class designations for valves specified by nominal pipe sizes shall be class125, class 150 and class 300.6.4.9 Direction6.4.9.1 Unless otherwise specified manually operated valves shall be closed by turninghand wheel or lever in clockwise direction when facing the hand wheel or lever.The design of lever when fitted shall be such that the lever may only beassembled to the valve so that it is parallel to the direction of flow when thevalve is open.6.4.9.2 All gear traveling nut operations shall be provided with suitable stops to preventmovement of the shaft beyond the limit corresponding to the fully closedposition of the disc.6.4.10 Testing6.4.10.1 All valves shall be hydrostatically tested by the manufacturer before dispatch.The pressure shall be obtained without any significant hydraulic shock. Testingshall be carried on before application of paint or other similar treatment unlessotherwise agreed between the purchaser and the manufacturer. There shall beno air entrapped within the part of the valves subjected to test pressure.6.4.10.2 Performance testing: Each valve shall be shop operated from fully closed tofully open position and reverse, under no pressure and no flow condition todemonstrate that the complete assembly is workable.6.4.10.3 Body Test: Completely assembled valve shall be tested as follows:6.4.10.3.1 The body ends shall be blanked so that the valve as subjected to the fullpressure in all directions induced by the test pressure. Wafer valves may betested in any suitable manner agreed between the purchaser and themanufacturer.6.4.10.3.2 The valve disc shall be in slightly open position and pressure equivalent to 1.5times the maximum permissible working pressure shall be applied with water.The duration of this test shall be as in Table. 6.5Urban Administration & Development Department Page 70
Table 6.5Nominal DiaMinimum Test Duration in Minutes forBody Test Seat Test When Applicable.Upto and including 50 0.25 0.2565 to 150 1 1200 to 300 2 2350 to 1000 5 21200 to 2000 5 36.4.11 MarkingMarking shall be cast integral on the body or on a plate securely attached tothe body. The markings shall be in accordance with IS 9866 : 1981.6.6 Non return valve: (See Drawing No.-4)6.5.1 A device provided with a disc hinged on one edges so that it opens in thedirection of normal flow and closes with reversal of flow. Non return valve are 3types: 1 swing check type cast iron reflex valve. 2. Gun metal non return valve.3. Cast steel reflex valve.6.5.2 The reflux valves are swing type gate valves with a flap hinged at its top andthe flow in the forward direction causing the flap to swing open. The amount ofopening depends upon the velocity of flow and the weight of flap. With thedecrease of velocity, the opening reduces and it closes down preventing anyback flow during reversal of flow.6.5.3 The main consideration for the selection of reflux valve should always be that itshould not close down without heavy shock. If it closes with a shock it may leadto development of severe water hammer.6.5.4 Single check-type Reflux Valves (Cast iron):6.5.4.1 (Non-return valves) Single Door Pattern should conform to IS: 5312 (Part-I)6.5.4.2 General: The body, door, cover and hinge are of cast iron to IS: 1210. Bodyring, door faces, bearing bushes are of gun metal, hinge pins, door pins anddoor suspension pins are of high tensile brass or chromium steel (minimum 12% chrome) and air release plugs galvanized cast iron. Reflux valves shall bedesignated by nominal pressure (PN) defined as maximum permissible gaugepressure.6.5.4.3 Size of valve 50mm to 600mm.6.5.5. Swing check type reflux (non return valves) multi door pattern conforming to IS5312 (Part-2)6.5.5.1 Class of valves Class of reflux valves shall be designated by nominalpressure (PN), defined as the maximum permissible gauge working pressure inMPa as follows: PN 0.6 and PN 16.5.5.2 The materials used for the manufacture of different component parts of valvesshall conform to requirements given in table 6.6.Urban Administration & Development Department Page 71
Page 1 and 2:
GOVERNMENT OF MADHYA PRADESHDEPARTM
Page 4 and 5:
Branch(i) A special form of cast ir
Page 6 and 7:
A valve in which the closure to an
Page 8 and 9:
Sullage waste Water:Spent water fro
Page 10 and 11:
Laying:The approximate positions of
Page 12 and 13:
CHAPTER NO.1CAST IRON SOCKET AND SP
Page 14 and 15:
Socket and spigot pipes Class AWeig
Page 16 and 17:
1.5 .4 Pipe shall be tested hydrost
Page 18 and 19:
1.9.3 Mass (weight) of the various
Page 20 and 21:
Diameter (mm)Weight (approx) kgHeav
Page 22 and 23: Diameter (mm)Weight (approx) kgHeav
Page 24 and 25: 1.9.3.11 Cast iron plugs:-Diameter
Page 26 and 27: 1.12.7 Caulking may be done with pn
Page 28 and 29: 2.5 Thrust Blocks2.5.1 In case of b
Page 30 and 31: 2.9.3 Should any test of the pipe l
Page 32 and 33: CHAPTER NO.3CAST IRON PIPES AND SPE
Page 34 and 35: 3.4.2.2 Cast iron flanged spigot:-R
Page 36 and 37: 3.4.2.6 All flanged cast iron tees:
Page 38 and 39: Diameter (mm)Weight (approx) kgHeav
Page 40 and 41: Nominal diameterTable 2.3Refer Tabl
Page 42 and 43: Table No.3.8DimensionWall thickness
Page 44 and 45: 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
Page 70 and 71: with the main. For large aqueduct p
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 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
Page 126 and 127:
shall be used between the straps an
Page 128 and 129:
10.18.9.1 After the test has been c
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
Page 172 and 173:
acetate paper, silt drums, ropes, i
Page 174 and 175:
14.22. Automotive Suction Machine :
Page 176 and 177:
14.25.3 Brick Masonry Chamber : Aft
Page 178 and 179:
15.2.5 Lift: the vertical distance
Page 180 and 181:
ensure that drilling has been done
Page 182 and 183:
accepted deductions (stated as a pe
Page 184 and 185:
described in IS 4031 (Part-5) : 198
Page 186 and 187:
v) Cleat bolt of size M-10vi)vii)Se
Page 188 and 189:
15.17.5.3 To protect persons from i
Page 190 and 191:
15.17.5.19. Wherever a socket or co
Page 192 and 193:
esults in unsuitable sub grade cond
Page 194 and 195:
15.17.14.7 Clear out space shall be
Page 196 and 197:
15.17.15.7.1 Ordinarily no surplus
Page 198 and 199:
Water Supply pipes lines should be
Page 200 and 201:
16.3.3 Failure to remove the ridge
Page 202 and 203:
16.9.12 The cover shall be capable
Page 204 and 205:
17.7 Development of tube-well with
Page 206 and 207:
17.13.4 Fine enough to prevent the
Page 208 and 209:
(iv) No. of slots per m 429(v) % Ar
Page 210 and 211:
Annexure: ADRILLING OF TUBE WELL1.
Page 212 and 213:
particularly those having clay or s
Page 214 and 215:
5.3.2 The shape of the openings sho
Page 216 and 217:
5.7.3.6.1 The contractor shall deve
Page 218 and 219:
STRATACHATANNEXURE-2Mohalla/BastiNa
Page 220 and 221:
LocationApparentResistivelyAB/2Inte
Page 222 and 223:
GRAVEL PACKED TUBE WELLSGAVEL PACKE
Page 224 and 225:
HAND PUMP PLATEFORMUrban Administra
Page 226 and 227:
Urban Administration & Development
Page 228 and 229:
Page 230 and 231:
Page 232 and 233:
Page 234 and 235:
Page 236 and 237:
Page 238 and 239:
Page 240 and 241:
Page 242 and 243:
Page 244 and 245:
Page 246 and 247:
Page 248 and 249:
Page 250:
show all

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

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?