Section 77 in The Haryana New Mandi Townships Building Rules, 1967
77. Water closets, Receptacles - [Section 4(2)(1)].
- A water closet constructed in connection with a building shall comply with the following requirements -(i)The pan basin or other receptacles (thereafter in this rule called "the Pan") shall be non-absorbent material to be constructed and fitted as to receive and contain sufficient water and to allow any filth to fall free of the sides directly into the water;(ii)Flushing apparatus - The flushing apparatus shall be such as to secure the prompt and effectual flushing and cleansing of the pan.(iii)Communication with supply pipes etc. - No part of the water- closet apparatus, other than the flushing apparatus, shall be directed connected with a supply of distributing pipes.(iv)Containers - No container or similar fitting shall be fixed under the pan.(v)"D" Trap - No trap of the kind known as a "D" trap shall be fixed in connection with the water-closet.(vi)Ventilation of trap - Where the water-closet discharges into a soil pipe which also receives the discharge from another water-closet the trap of the water-closet shall be ventilated by a pipe which shall -(a)have an internal diameter of not less than 50 milimetres (1.969 inches);(b)be connected with the arm of the soil pipe at a point not less than 8 centimetres (3.15") and not more than 30 centimetres (11.811") from the highest point of the trap on that side of water-seal which is nearer to the soil pipes.(c)either have an open and as high as the top of the soil pipe or be carried into a soil pipe at a point less than 95 centimetres (3 feet 1.402 inches) above the highest connection to the soil pipe.(vii)Lighting and ventilation of internal water closet - Where the water-closet is in connection with a domestic building and is entered directly from the external air, it shall be provided with a sufficient opening for lighting and ventilation as near the top as practicable and communicating directly with the external air.(viii)Lighting and ventilation of internal water-closet - Where the water-closet is in a domestic building and is not entered directly from the external air, it shall either -(a)have an external wall for at least one of its sides and a window of an area of not less than 120 sq. centimetres (2.066 sq. feet) exclusive of the frame, opening directly into the external air; or(b)be sufficiently ventilated by mechanical means and sufficiently lighted.Note - For the purpose of this rule the expression "water closet" shall include any room which is partitioned or divided into two or more cubicles, each containing a pan, if the partitions or divisions are so constructed as to allow the free circulation of air throughout the room.
