1985 Ed.]
Building (Construction) Regulations
[CAP. 123
B 51
[Subsidiary]
(4) The foundations of the shaft shall be so proportioned that the resultant of all loads shall be within the middle third of the foundations, or if on piled foundations shall cause no tension in any pile.
(5) In paragraph (1)(g) "base" means the underside of the course immediately above the footings, if any, or if there are no footings the bottom of the chimney shaft.
79. (1) Every open cooking slab (not being a fireplace and not directly connected to a chimney) constructed or adapted for the use of coal, charcoal or wood as fuel shall be provided with an incombustible hood of sheet metal or other material as the Building Authority may approve, connecting with a chimney.
(2) The bottom edge of such hood shall be not more than 2 m above floor level and shall cover the area of the cooking slab.
80. No floor or roof of combustible material shall be constructed over any fireplace, heating appliance or oven, burning solid fuel or oil fuel, within 1.5 m of the top of such fireplace, heating appliance or oven, unless protected with a lining of incombustible material not less than 5 mm thick, covering a horizontal area of not less than 10 m2 and so arranged as to give the most effective protection.
Open cooking slabs to have hoods.
L.N. 294/76.
Ceilings over fireplaces to be protected. L.N. 394/76.
PART VIII
Roofs
81. (1) The roof of every building and of any minor structure placed above such roof except the doors, and frames of dormers or sky lights shall be covered with tiles, glass, metal or other incombustible material:
Provided that where a roof is constructed entirely of incombustible materials the external covering may consist of—
(a) rock asphalt containing not more than 17 per cent by weight of bitumen; or
(b) a layer or layers of compressed and impervious felt membrane roofing having an aggregate thickness of not more than 10 mm bedded down solidly on the roof by viscous materials.
(2) Where the roof is covered in a manner provided by proviso (b) to paragraph (1) the external layer of such roofing shall be surfaced with hard incombustible mineral matter incorporated during manufacture,
Provided that asbestos based roofing felt need not be so surfaced where the slope of the roof is not greater than 20 degrees from the horizontal.
Roofs to be covered.
L.N. 394/76.