Section 77 in Assam Notified Urban Areas (Other than Guwahati) Building Rules, 2014
77. Cinemas, Theatres and Assembly Hall.
- In addition to any other rule applicable to such buildings, the following shall apply:-(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;(ii)gangways and passages must not be more than 6.0 m apart. No seat must be more than 3.0 m from gangway or passage;(iii)a gangway or passage must be at least 1.2 m wide and they shall be provided at least one in the center and one of each side;(iv)the height of the bottom balcony or the gallery shall not be less than 3.0 m from the floor of the auditorium and depth under the balcony shall not be more than 3 times the clear height. The clear distance between the backs of two successive rows shall not be less than 0.9 m, but for seats with rocking backs it may be 0.8 m;(v)the maximum rake of the floor of the auditorium shall not be more than 1 in 20;(vi)the maximum width of the balcony steps shall be 0.8 m. Provided that for the front, and rear step, this distance is 0.9 m;(vii)the maximum rise of the balcony steps shall be 0.4 m;(viii)the maximum height of the roof or ceiling at the highest step of the balcony shall be 3.0 m and at no place the distance between the nosing and lowest projection ray shall be less than 2.4 m;(ix)in the case of the cinema the farthest seat shall not be more than 45.0 m anyway from the screen;(x)the angle of seating shall not be less than 60 degree and the front row shall not be nearer to the screen than the half of its width;(xi)the position and height of the screen be regulated in such a way that the maximum angle of the line of vision from the seat to the top of the screen shall not exceed 35 degrees;(xii)no corridor leading to any stair case or exit passage shall be less than 1.5 m in width;(xiii)no corridor shall be used for any purpose other that the exit and entrance from the auditorium;(xiv)entrance and exit doors shall be provided at a rate of not less than one door of a dimension of 1.5 m in width and 2.4 m in height for every 200 individuals or part thereof;(xv)all outdoors for the use of the public be made open outward and in such a manner that when open they shall not obstruct any gangway of passage or stairway or landing;(xvi)the access to the auditorium if it is on the upper storey or the galleries shall be provided by not less than two independent stairs of fire proof construction. Such stairs at no place shall be less than 1.5 m clear in width;(xvii)no staircase shall have a flight of more than 15 steps or less than 3 steps and width of the landing between such flight shall be the same width of the staircase. The tread of the step shall not be less than 250 mm and rise not more than 150 mm;(xviii)no space less than 2.4 m in height shall be allowed under the floor of the auditorium;(xix)the cinematograph machine room shall be substantially constructed of fire resisting material or lined with such material.
