(1)
(2)
(3)
(4) Exits shall be so located that the distance between 2(two) exits on the floor shall not exceed-
(a) 22.5 meters, in the case of a residential building or an educational building or institutional building or hazardous building; and
(b) 30 meters, in the case if an assembly building or a business building or a mercantile building or an industrial building or a storage building.
For floors with sprinklers, which are not part of requirements for the floor and occupancy, the distance in sub-rule(1) may be increased by 50 percent.
The distance to an exit front the dead end of a corridor shall not exceed half the distance specified in sub-rule(1), except in an educational building or an assembly building or an institutional building in which case it shall not exceed 6 meters.
Whenever more than one exit is required for any room space or floor of building, exits shall be placed as remote from each other as possible and shall be arranged to provide direct access in separate directions from any part in the area served.
Requirements regarding staircase. — All building referred to in rule 72 shall be provided with such number of staircase as the ULB require. Under no circumstances, the number of staircases shall be less than 2(two) in the case of a building of more than 14.0(fourteen) meters in height and one of them shall be on the external face of the building.
Minimum width provisions for Staircase.-
(a) The following provisions for minimum width for staircase(s) shall be made:- for each stairway in a residential building having not more than 2(two) tenements per floor, the minimum width shall be -
(b) (C)
(d)
(e)
(i) 0.90metre in the case of a building having above 11 meters in height.
(ii) 1.05 meters in the case of a building having above 11 meters and up to
14.0 meters in height.
(iii) 1.25 meters for primary stairway in the case of building above 14.5 meters in height.
every additional tenements per floor to be served by the same staircase. The width of each stairway shall be increased by 0.15 meter, provided that for buildings constructed under the each of stairway shall not be less than 0.90 meter.
for each stairway in institutional or mercantile buildings, the minimum width shall be 2.0 meters;
for each stairway in educational or business or assembly buildings other than theatre, motion picture house, city hall, dance hall, auditorium, exhibition hall or similar other halls or such other places, the minimum width shall be 1.80 meters;
(i) for assembly buildings not included in clause (b) above, the minimum width of each stairways shall be 1.80 meters where not more than 300 persons are to be accommodated,
(ii) for the accommodation of more than 300 persons, the minimum width of stairway as at (a) above shall be increased by 0.30 meter for every additional 100 persons or part thereof over 300 persons,
(iii) notwithstanding anything contained in sub-clause(ii), instead of a single staircase, corridor or passageway of the width prescribed by the said sub-rule, there may be two or more staircases, corridors or passageways as may be Page 50
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sufficient for the number of persons that can accommodated in the building, each having a width as prescribed in sub-rule(i);
(f) for all other buildings, the minimum width of each stainNay shall be 1.50 meters;
(9) the minimum width of a passage or corridor shall be as follows :-
(i) for passage connecting vertical exits and the apartments/ units, the width shall not be less than the width of each stainNays specified in clause(a) to
(e) except for mercantile business buildings and assembly buildings;
(ii) for a passage within a apartment, the width shall not be less than 0.90 meter;
(iii) for a passage giving access to shops in a mercantile building, the width shall not be less than 2 meters if the shops are on one side only, and 3 meters if the shops are on both sides;
(iv) for a passage in a business building, the width shall not be less than 2.50 meters;
(v) .for a passage in an assembly building, the width shall not be less than that as derived under sub-clause(i),(ii) and (iii) of clause (e).
Provisions for doors for an assembly room or hall.- The doors of a room or a hall, where groups of people congregate or gather in any building, shall be made to open outside shall be affixed thereto. There shall be at least 2(two) such doors in every such room or hall if not more than 300 persons are intended to be accommodated therein and an additional door shall be provided for every 100 persons or part thereof in excess of 300 persons. The width of every such door shall not be less than 1.80 meters.