Specifications Part 1 - Water Supply, Sewerage and Tube Well Works
Specifications Part 1 - Water Supply, Sewerage and Tube Well Works
Specifications Part 1 - Water Supply, Sewerage and Tube Well Works
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Table No. 9.3Hydrostatic Design Pressures(Refer Table No.7 IS 12709-1994)Pressure ClassHydrostatic Design PressurePNkPa3 5406 10809 162012 216015 27009.8 Marking9.8.1 Both ends of pipe shall be marked with bold letters not less than 12mm inheight <strong>and</strong> in a colour <strong>and</strong> type that remains legible under normal h<strong>and</strong>ling <strong>and</strong>installation procedures. The marking shall include the following:i) -mark,ii) The nominal pipe diameter,iii) Class of pipe (pressure <strong>and</strong> stiffness), <strong>and</strong>iv) Batch No. or date of manufacture.9.8.2 BIS Certification Marking- Pipes may also be marked with the St<strong>and</strong>ard Mark.9.9 Rubber ring Gaskets.Appropriate EPDM Rubber Ring Gaskets conforming to IS 5382 for GRP pipeshall be selected.9.10 Fittings <strong>and</strong> specials9.10.1 All GRP fittings, such as bends, tees, junction <strong>and</strong> reducers <strong>and</strong> specials suchas puddles etc. shall be equal or superior in performance to pipe of the sameclassification <strong>and</strong> shall be smoothly finished internally.9.10.2 GRP fittings are not subject to tests for strength <strong>and</strong> it is essential that externalrestraint be considered for installation. All GRP fittings are to be manufactured/manufactured by approved pipe manufacturer only. Only specific requiredfittings should be fabricated/ laminated at site after permission from engineer incharge.9.10.3 Dimensions of all fittings should be approved by engineer in charge.Each fitting shall be supplied with necessary coupling <strong>and</strong> flanges.9.10.4 Fittings Made from Straight Pipe: The fittings shall be fabricated from completepipes or portions or straight pipe complying with this st<strong>and</strong>ard as applicable forthe pipe classification.9.10.4.1 The fitting shall comply with the declared design requirement <strong>and</strong> be suitablymitered. The miter shall be over wrapped externally <strong>and</strong>, if practicable internallywith woven roving <strong>and</strong>/or chopped str<strong>and</strong> mat to ensure the longitudinal <strong>and</strong>circumferential tensile strength is at least equal by design to that of the pipewith which the fittings is to be used.Urban Administration & Development Department Page 106
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