Section 68 in The Haryana New Mandi Townships Building Rules, 1967
68. Construction of soil pipes etc. - [Section 4(2)(1)].
- The soil pipe from a water closet or slop sink other than parts of such pipes carried up as ventilating pipes, shall be -(i)formed of suitable material and this requirement shall be deemed to be satisfied if new cast iron pipes conforming to British Standard Specification No. 416/1935 for heavy grade pipes or new lead pipes conforming to either British Standard Specification No. 602-1939 or No. 603-1935 are used;(ii)of an internal diameter not less than that of pipe connecting it with the water closet or slop sink and in any case not less than 75 milimetres (2.9528 inches).
