Section 70 in The Haryana New Mandi Townships Building Rules, 1967
70. Other requirements for ventilating pipes, soil pipes and waste pipes from slope sinks - [Section 4(2)(1)].
- A ventilating pipe to a drain, a soil pipe from a water closet or slope sink, shall be capable of withstanding after erection a reasonable smoke or air test under pressure and shall not :(i)have trap at its point of junction with the drain or (except where necessary as part of the apparatus of any water closet or slop sink) in any other part of the pipe;(ii)have any bend or angle, except where unavoidable in which case the bend or angle shall be as obtuse as possible and shall not reduce the internal diameter of the pipe;(iii)except in so far as it passes through any cornince or similar external architectural feature or being a ventilating pipe is carried immediately beneath the covering of the roof be enclosed by any part of the building, unless :(a)it is formed of material satisfying the requirements of Rule 68 (as to the construction of soil pipes); and(b)if formed of lead or other material similarly susceptible to external injury, it is exposed throughout so much of its length as is enclosed by any part of the building (except where is passes through a floor or ceiling) or is adequately protected by enclosure in a chase with a metal or metal lined front.
