1969-HKRS30-8-59_Part02 — Page 39

“SCHEDULE,

[reg. 94.]

Minimum ReqUIREMENTS FOR CONSTRUCTION AND MateriALS TO BE CAPABLE OF RESISTING THE ACTION of Fire FOR SPECIFIED PERIODS.

Construction and Materials

Table A-Walls and partitions.

Minimum thickness in

HOLLOW BLOCK

CONSTRUCTION.

Clay blocks

Plastered at least 4 inch

Construction and Materials

4

Salto CekiRUG-

אומות

Bricks of clay,

concrete or sand lime

No plaster

*Where plastered at least ☀ inch thick on each slõe and where the wall does not exceed 10 feet in either

height or length, the

inches (excluding plaster) for period of

2

1 + hours. hours. hour. hour.

thickness for this period may be 4 inches.

Concrete Blocks |Claxe } Aggregate

No plaster

4

3

21

Plastered at least 4 inch

thick on each side

4

24

Class 2 Aggregate

No plaster

4

3

Gypsum blocks

Plastered at least 4 inch

thick on each side

No plaster .........**** Plastered at least 4 inch

thick on each side

Wood wool slabs Plastered at least & inch

2

3

3

1

thick on each side |

2

N

Reinforced

Aggregate in accordance

Concrete

with by-law 3.02, with

minimum concrete cover

to reinforcement of 1 inch

7

3

3

Flaster board

Supported at top and

bottom edges in strel channels and plastered on each side at least † inch thickness with gypsum plaster.

3

thick on each side and shells not less than 3 inch thick-

I cell in each block and

cach block not less

than 50 per cent. solid

I cell in each block and

each block not less

than 30 per cent. solid

2 cells in each block and

cach block not less

than 30 per cent. solid

2 cells in each block apd

each block not less

than 30 per cEOL solld

Concrete blocks Plastered at least 3 inch thick

on each side and I cell in

wall thicknes

Class 1 Aggregate

Class 2 Aggregate

Gypsum blocks. Not less than 70 per cent.

CAVITY WALL

CONSTRUCTION.

solid:

No pluster

Plastered at least † inch

thick on each side................

Walls constructed in

accordance with by-law 5.16| (e) of solid bricks or

blocks of clay, CUD- crete or sand lime- Thickness of each leaf

(6) with outer leaf, not

less than 4 inches thick of solid bricks or; blocks of clay, concrete or sand lime:

Minimum thickness in inches (excluding plaster)

for period of

2 1 +

bours. hours. hour. bour,

6

82

41

24

2

بي

बभ

3

2 2