Section 108(iv) in The Haryana New Mandi Townships Building Rules, 1967
(iv)the floor shall be non-absorbent material which shall in every part, including the part beneath the seat, be not less than 8 centimetres (3.15 inches) above the surface of the adjoining ground and have a fall or inclination towards the exterior of the room of not less than 1 centimetre to 24 centimetres (one half on an inch to the foot);
