Additional Occupancy wise Requirement Use of fire doors in buildings - ANNEX H H-2 If car parking and repair operations are conducted together the fore separation shall be with 120min rating fire door H-4 All exits from the car parking to exits shall be painted green and should display exit signage.(enclosed car parking) H-5 Fire escape staircase shall be provided at every 45m from the nearest staircase, with a opening of 1250mm.