1964_BUILDING_(CONSTRUCTION)_REGULATIONS — Page 16

B 16

[Subsidiary]

L.N. 294/76.

L.N. 294/76. L.N. 95/78.

CAP. 123]

Building (Construction) Regulations

[1985 Ed.

TABLE IV

Ordinary concrete; grades I to V

3

Proportions of mix upper and lower limits

Aggregate

Total volume

of aggregate

Designation

Nominal

mix

per 45 kg

S

of cement

Cement

Fine

45 kg

Coarse

m3

Resistance to crushing in MPa when tested in accordance with the First Schedule

Within 7 days after

*

Within 28 days

after

mixing

mixing

Grade 1

1-1-2

0.1

0.03

0.07

15

20

0.04

0.06

Grade II

1-14-3

0.14

0.05 0.09

13.5

17.5

0.06 0.08

Grade III

1-2-4

0.19

0.06

0.13

12

15

0.08

0.11

Grade IV

1-3-6

0.29

0.1

0.19

8.6

11.3

0.12

0.17

Grade V

{1,38

0.13

0.25

6.5

8.6

0.15

0.33

* Sum of volumes of line and coarse aggregates measured separately.

TABLE V

Quality A concrete: grudes 14 to IHA

Proportions of mix upper and lower limits

Resistance to crushing in MPa when tested in accordance with the First Schedule

Total volume of

aggre-

Designation

Nominal mix

gate per 45 kg of

Aggregate

6

Cement

vement

45 kg

*m*

Fine m3

Coarse m'

Preliminary

Works tests

tests

10

Within Within | Within | Within 7 days | 28 days | 7 days | 28 days after after after after mixing mixing mixing mixing

Grade IA

1-1-2

0.10

0.03 0.07 0.04 0.06

32 41 24

31

Grade IIA

1-13-3

0.14

0.05 0.09 26 34 20 0.06 0.08

26

Grade IIIA 1-2-4

0.19

0.06 0.13 0.08 0.11

21 27

16

20

Sum of volumes of fine and coarse aggregates measured separately.