Section 9 in The Special Rules for the Mulit-storeyed and Public Buildings, 1974
9. Aisles and spacing rows of seat.
(1)Clear aisles not less than 1.2 metres in width shall he provided at right angles to the line of seating in such number and manner that no seat shall be more than 3.8 metres away from an aisle measured in the line of seating.(2)Where all the aisles do not directly meet the exit doors, cross aisles of minimum 1 metre width and at the rate of one cross aisle for every 10 rows of seats shall he provided parallel to the line of seating so as to provide direct access to the exit.(3)Rows of seats between aisles shall not have more than 14 seats and in the case of such rows opening to an aisles at one end only, the number of seats shall not be more than 7.(4)There shall be a minimum space of 85 cm. between the backs of any two rows of seats and a minimum of 35 cm, between the back of an)' seat and the front of the seat immediately behind it as measured between plumb lines.
