Section 30(2) in Faridabad Complex Administration Building Rules, 1989
(2)Every habitable room :-(a)Shall have clear height of at least 2.75 metres in every part from floor to ceiling. In case of air conditioned rooms, the height shall not be less than 2.4 metres measured from the surface of the floor to the lowest point of air conditioning duct or false ceiling; -(b)Shall be provided for the purpose of light and ventilation with windows, ventilators or other apertures which shall have a total floor area of not less than ¼th of the total floor area of the room. All doors and windows or other apertures shall open directly or through a verandah or to a permanent open space or an open space above the building or not less than 1.8 metres in width.
