1985 Ed.]
Building (Construction) Regulations
ICAP. 123
B 39
[Subsidiary]
(b) No such recess shall reduce the width of any wall to less than 225 mm.
(c) The aggregate width of all recesses and openings formed at any level shall not exceed the length of the wall at that level.
(d) Where the wall is a buttressing wall, every recess or opening at any level shall be at a distance from the buttressed wall of not less than the height of the buttressing wall.
(2) An arch or lintel sufficient to support the superstructure shall be built of incombustible material over every recess or opening in any wall.
(3) (a) Openings may be formed in party walls other than those separating parts of the building in different ownership.
(b) Such openings shall be fitted with self-closing doors in frames, the whole so constructed as to be fire-resisting for at least one hour.
(c) In any row of houses or terrace exceeding 35 m in length or consisting of more than 6 houses or tenements, party walls without openings shall be provided at a distance apart not exceeding 35 m, or 6 houses or tenements, whichever is the less.
(d) Where openings in party walls are closed, bricks or solid building blocks not less than 225 mm in thickness or reinforced concrete not less than 100 mm in thickness shall be used.
(4) For the purpose of this regulation, the expression "recess" shall include any chase or other reduction in the required thickness of a wall.
56. (1) A wall shall not be subject to loads other than distributed loads:
Provided that any wall may be subject to any concentrated load which is transmitted to that wall by a beam, column, pier or other structural member, having such bearing on the wall and such additional support as shall be necessary to comply with the requirements of regulation 5.
(2) For the purposes of this regulation, joists set at distances apart not exceeding 1 m shall be deemed to compose a distributed load.
57. (1) Subject to the provisions of regulation 55, where any part of any wall overhangs any part beneath it, it shall
(a) be in addition to the required thickness of that wall; and
(b) be corbelled out or otherwise supported to comply with regulation 5.
L.N. 294/76.
Loads on walls.
L.N. 294/76.
Corbelling and overhanging work.