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

Table 13.5(Refer Clause 8.2 IS 458 - 2003)S .No. DimensionsTolerancesi) Overall length ± 1 % of standard lengthii) Internal diameter of pipes:a) Up to and including 300 mm ± 3 mmb) Over 300 mm and up to and ± 5 mmincluding 600 mmC Over 600 mm ± 10 mmiii) Barrel wall thickness:a) Up to and including 30 mm + 2 mm- 1 mmb) Over 30 mm up to and including50 mm.+ 3 mm- 1.5 mmc) Over 50 mm up to and including + 4 mm65 mm.- 2 mmd) Over 65 mm up to and including80 mm.+ 5 mm- 2.5 mme) Over 80 mm up to and including95 mm.+ 6 mm- 3 mmf) Over 95 mm + 7 mm- 3.5 mm13.6 Sampling and inspection13.6.1 In any consignment, all the pipes of same class and size and manufacturedunder similar conditions of production shall be grouped together to constitute alot. The conformity of a lot to the requirements of this specification shall beascertained on the basis of tests on pipes selected from it.13.6.2 The number of pipes to be selected from the lot shall be in accordance withcolumn 1 and 2 of Table 9 of IS: 45813.6.3 Pipes shall be selected at random. In order to ensure randomness, all the pipesin the lot may be arranged in a serial order and starting from any pipe, everypart of N/n w13.6.4 All the pipes selected as per 13.6.3 shall be inspected for dimensionalrequirements, finish and deviation from straight.13.6.5 The number of pipes to be tested shall be selected in accordance with class9.1 of IS: 458. These pipes shall be selected from pipes that have satisfied therequirements mentioned in 12.6.4.13.6.6 A lot shall be considered as conforming to the requirements of IS: 458 if thefollowing conditions are satisfied.Urban Administration & Development Department Page 152