F 20
[Subsidiary]
Light and air not to be diminished.
61434/40
Staircase to be fire resisting. L.N. 13/75.
(Cap. 123, sub. leg.)
Staircases.
L.N. 294/76.
L.N. 365/84. [*In operation on 1.8.85.]
CAP. 123]
Building (Planning) Regulations
[1984 Ed.
(4) No room containing a soil fitment shall open directly into a room used or intended to be used for the manufacture, preparation or storage of food for human consumption.
(5) For the purposes of this regulation, the expression "soil fitment" means a water-closet fitment, a trough water-closet or a urinal.
37. No building shall be erected in such a manner as to reduce the quantity of light and air available to any other building, which has been erected in accordance with these regulations, below that required under these regulations.
PART V
STAIRCASES AND FIRE ESCAPES
38. Where any building exceeds 2 storeys in height, the main staircase shall be constructed for its whole height of materials having a fire-resistance period, as defined in Part XVI of the Building (Construction) Regulations, of not less than 1 hour.
39. (1) Every building which exceeds 1 storey in height shall be provided with a staircase or staircases to give access to upper floors unless there is separate access to such upper floors.
(2) The main staircase of every building which exceeds 4 storeys in height shall be continued to the roof of the building unless a secondary staircase or fire escape is provided.
(3) The main staircase of every building which exceeds 1 storey in height shall
(a) have a clear height of not less than 2 m;
(b) have a clear width of not less than 900 mm;
(c) be constructed with treads not less than 225 mm in width (measured at the centre of the flight) from the face of one riser to the face of the next riser and with risers not exceeding 175 mm in height;
(d) have not more than 16 steps in any flight without the introduction of a landing;
(e) be provided on one or both sides with properly fixed handrails which, in section, shall be—
(i) if tubular, not less than 38 mm and not greater than 50 mm in external diameter;
(ii) if rectangular, not less than 40 mm and not more than 50 mm wide with an overall depth, or depth to a deep groove, of not more than 50 mm;
(iii) in any other case, such as to afford to the user thereto a grip analogous to that specified in the case of either tubular or rectangular handrails, whichever may be the more appropriate having regard to the shape of the section.
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