(1) The area of the window, door and ventilator openings shall not be less than one-fifth of the total floor area and the windows and ventilators shall be of such dimensions, in such humber and in such situation as the Executive Engineer concerned shall specify.
(2) Mechanical appliances such as exhaust fans shall be used to expel air at the rate of 14.15 cubic meters or more per person, at least three times in an hour: -
Provided that, the Licensing Authority in consultation with the Executive Engineer and the Health Officer concerned may relax the conditio11 laid down in this ruJe regarding the total door and window area, in the case of the cinemas where exhaust fans have been provided.
(3) Where a cinema bas an air-conditioning plant, such plant shall be approved by the Electrical Inspector. It shall also be ensured by the Licensee that the air-supply fan of adequate capacity is affixed to the air handling unit. Such air supply fan shall be suitable to meet ventilation requirement of auditorium and shall be kept in working condition to ensure circulation of full quantity of fresh air to avoid suffocation in the auditorium in case of failure of the air-conditioning unit.