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State of Punjab - Section

Section 71 in The Punjab Capital (Development and Regulation) Building Rules, 1952

71. Roofs.

- [The roof, of a building shall be so constructed as to be fire resisting, weather proof and non-erodable.] [Substituted by Chandigarh Administration Gazzette dated 22.1.1993.]
(a)tiles or slabs or burnt clay, concrete stone or asbestos cement;
(b)asbestos cement sheeting of not less than 24 gauge;
(c)bituminous materials laid on a base of boards, concrete or hollow bricks and covered with tiles concrete or bituminous macadam.
(d)3" of stabilised or ordinary earth laid on a base of flat 1½" or 2" tiles or reinforced cement concrete slabs with the top slope not more than 1 in 40 and not less than 1 in 70.
No roof consisting of matting sirki, cloth, grass or thatch or of any easily inflammable material shall be constructed.[72. 'Staircase in residential buildings, single family or two family residential buildings. - Every building more than one storey high intended to be used as residential building shall be provided with atleast one staircase having minimum width of 85 cms. with rise of not more than 19 cms., limited to 15 nos. per flight and tread not less than 25 cms. in width constructed of fire resisting materials.] [Substituted by Chandigarh Administration Gazzette dated 22.1.1993.][73. Residential buildings for more than two families. - Every building intended to be used as residential building for more than two families shall be provided with atleast one staircase extending from ground floor level to the highest floor having minimum clear width in accordance with the following in accordance with the following table] [Substituted by Chandigarh Administration Gazzette dated 22.1.1993.] :-
(a) Number of users up to 10 85 cms.
(b) Number of users up to 11 to 20 1.10 m.
(c) Number of users from 21 to 100 1.25 m.
(d) Increase 1" (2.5 cms) for every additional 15persons until a maximum of 2.75 m. is reached.
A single staircase of width mentioned above may be replaced by two staircase each of a width atleast equal to two-thirds the width prescribed for a single staircase provided neither of other two substituted staircases be less than 1.1 m. in width. Staircase so provided shall be built in fire resisting materials.
(e)Occupant Load :
S. No. Group of Category area in m 2 person
1   2 3
(i)   Residential 12.5
(ii)   Educational 4
(iii)   Institutional 15*
(iv)   Assembly -  
  (a) with fixed or loose seats and dance floors 0.6*
  (b) without seating facilities including dinning rooms 1.5*
(v)   Mercantile -  
  (a) Street floor 3
  (b) Upper Sale floors 6
(vi)   Business and Industria 10
(vii)   Storage 30
(viii)   Hazardous 10
Note. - The number of the users in any building or the occupant load shall be calculated on the actual number of occupants, but in no case less than that specified in the table above.]