Section 13(1) in Tamil Nadu District Municipalities Building Rules, 1972
(1)Every room (other than a kitchen, bathroom or storeroom), whether newly constructed or reconstructed and intended to be used for purposes of human habitation, shall have -(a)a height on an average of not less than 2.75 metres and not less than 2.1 metres at any point measured from the top surface of the floor of the room to the underside of the floor structure or roof structure above;(b)a clear superficial area of not less than 7.5 square metres; and(c)a width of not less than 2.5 metres.
