1956-HKRS30-8-46_Part03 — Page 31

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BUILDING (CONSTRUCTION) REGULATIONS, 1956

Farty

walls

Lo be

carried up

to roof.

Timber pot

Provided that, if the bottom courses are built solid for the full thickness of the panel wall to a height above its base at least equal to that full thickness, the base may overhang the beam to an extent not exceeding } of that full thickness.

(4) Every panel wall constructed of reinforced concrete shall be not less than 4 inches thick in every part.

82. (1) Every party wall shall be carried up to the underside of the roof.

(2) Where the roof is constructed of combustible materials——

(a) no combustible part of such roof shall be carried across

the party wall; and

(b) the roof covering shall be solidly bedded in mortar diren on the top of the party wall for its whole width and length.

63. No Hoor or roof joist bond timber or wood plate shall to be built be built into the thickness of any wall.

into walls.

Damp- proof

courses.

84. (1) Every wall built of bricks or building blocks shall be constructed with a damp-proof course complying with regula- tion 20.

(2) Such damp-proof courses shall be constructed-

(a) horizontally through the wall at a height of not less than 6 inches above the highest finished level of the external ground or paving or the surface of any oversite concrete on either side of the wall;

(b) horizontally under the coping of a paraper wall;

(c) vertically on the outer face of a wall where the ground surface on the outside of the wall is higher than any floor of the building, together with a horizontal damp-proof course under the floor:

Provided that such damp-proof course may be omitted where the floor and wall are constructed of

BUILDING (CONSTRUCTION) REGULATIONS, 1956

properly waterproofed reinforced concrete of not less than 8 inches in thickness;

(d) horizontally through the whole area of the brickwork of a chimney above the roof; and be connected to the apron dashing.

PART VII.

Fireplaces, flues and chimneys.

to have

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65. (1) Where any fireplace or stove is built or placed on Fireplaces any floor which is constructed of combustible material it shall be and sloVBE provided with a hearth of concrete, stone or other like incombusti- hearths. ble material, level with the floor, under and before the fireplace or stove.

(2) Such hearth shal|——

(a) be solid for a thickness of not less than 6 inches in every

part;

(b) extend not less than 6 inches beyond each side of the

fireplace or stove opening;

(c) extend not less than 18 inches in front of the fireplace or

stove opening;

(d) if of concrete be reinforced with not less than 0.144 square inches of reinforcement per foot width in each direction;

(e) be adequately supported.

openings.

88. (1) Any wall of bricks or building blocks at the back Fireplace of a fireplace shall be not less than 4 inches thick and in the case of an external or party wall it shall be not less than 8 inches thick.

(2) Such minimum thickness shall be carried up from the level of the hearth to the level of the ceiling of the room in which the fireplace is situated :

Provided that where the flue from that fireplace is back to back with another flue, such thickness shall be carried up to a height of not less than 12 inches above the level of the top of the fireplace opening.