Section 127 in West Bengal Municipal (Building) Rules, 2007
127. Soil pipe for connected privies and connected urinals.
(1) Every connected privy and connected urinal shall be provided with a soil pipe for carrying sewage to a city sewer.(2)Such soil pipe shall be provided with air-tight joints, and if it be placed above ground, shall be made of metal approved by the Authority.(3)Such soil pipe shall, in addition to the prescribed trap, be provided with trap placed at some point between the privy or urinal and the sewer referred to in sub-rule (1).(4)Such soil pipe shall be ventilated by direct communication with the open air and if the privy or urinal is situated in a building, the pipe shall be carried outside the building.(5)The soil pipe shall have to be connected to the sewer line through a master trap.
