Section 65 in West Bengal Municipal (Building) Rules, 2007
65. Ledge or tand.
(1) A ledge or tand in a habitable room shall not cover more than 15 per cent of the floor on which it is constructed and shall not interfere with the ventilation of the room under any circumstances.(2)The ledge shall be provided at a minimum height of 2.1 metres from floor level.(3)The maximum width of any ledge or tand shall be 0.60 metre.
