Section 77(i) in Assam Notified Urban Areas (Other than Guwahati) Building Rules, 2014
(i)every room in such building as mentioned above shall be lighted and ventilated by doors, ventilators and windows abutting on an interior or exterior open air space which shall not be less than 1/5 of the total floor area; provided if exhaust is installed or if it is air conditioned, the requirement of this rule shall be suitably relaxed by the Authority;
