Guwahati Building ByelawsState Rules of Assam · 2010
(a) If the bath room is attached to any dwelling room of the house the wall in between shall be solid masonry 1.0 m. high from the floor of the bath room.
(b) There shall be a floor area of not less than 2 sq. m. of which the smallest side should not be less than 1.2 m.
(c) It shall have a window of a superficial area of not less than 0.2 sq. m.
and it shall open upon a minimum wide open space or open to an open verandah of not more than 1.8 m. wide opening on to such open apace, or to any duct, the sizes of which should be as prescribed in clause Light & Ventilation of rooms.
(d) It shall have an impermeable floor made of smooth, hard material having a suitable fall of 1 in 30 for the drainage of the water.
(e) The height of the bathroom should not be less than 2.4 m.