1964_BUILDING_(CONSTRUCTION)_REGULATIONS — Page 11

1985 Ed.]

Building (Construction) Regulations

[CAP. 123

B11

[Subsidiary]

(f) such bricks or building blocks may be used in load bearing

walls only----

(i) in single storey buildings;

(ii) in 2-storey domestic buildings; or

(iii) for enclosing the top storey of a building.

TABLE 1

Bricks and building blocks

Description of brick or building block

1

3

Resistance to crushing in MPa of gross horizontal area

Purpose

Whether solid or hollow

External or internal

solid

10

(load bearing)

External or internal

hollow

5

(load bearing)

External (panel)

solid or hollow

3.5

(non-load bearing)

Internal (partition)

solid or hollow

1.5

(non-load bearing)

L.N. 294/76.

10. Cement shall be--

(a) ordinary Portland cement in conformity with the appropriate

provisions of B.S. 12:Part 2:1971; or

(b) rapid hardening Portland cement in conformity with the

appropriate provisions of B.S. 12:Part 2:1971; or

(c) Portland blast-furnace cement in conformity with the

appropriate provisions of B.S. 146: Part 2:1973; or

(d) any other cement approved by the Building Authority.

11. Stone lime shall consist of-

(a) quicklime formed by burning a natural rock or other suitable material at such a temperature that it will slake when brought into contact with water; or

(b) dry hydrated lime in the form of a fine dry powder produced by treating quicklime so as to produce a dry, sound product:

Provided that the calcium and magnesium compounds present in the lime as oxides shall be not less than 70 per cent by weight.

Cement. L.N. 294/76.

Lime.