Section 63(4) in Cuttack Development Authority (Planning and Building Standards) Regulations, 2001
(4)Notwithstanding the above, a minimum aggregate area of opening, excluding doors, shall be not less than ⅙ of the floor area in the case of residential buildings. In the case of other public building like commercial buildings, offices, educational institutions and hospital buildings the minimum aggregate area of opening shall be not less than ⅕ of floor area.
