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OBC 2006 Division B

9.3.1.7.

Version 1 — in force 1 January 2010

In force · amended
Verified · covered Verified against the 2010-01-01–2010-03-31 consolidation, whose range covers the query date. How to read this

Provenance

OBC 1997 · continues from 9.3.1.7. — Pro

Base · O. Reg. 350/06 · ext v0 →

O. Reg. 503/09, cl. 130 · ext ← current

In force 2010-01-01

OBC 2012 · continues as 9.3.1.7. — Pro

9.3.1.7. — Concrete Mixes

(1) For site-batched concrete, the concrete mixes described in Table 9.3.1.7. shall be considered acceptable if the ratio of water to cementing materials does not exceed,

(a) 0.45 for garage floors, carport floors and all exterior flatwork,

(b) 0.65 for interior floors other than those for garages and carports, and

(c) 0.70 for all other applications.

(2) The size of aggregate in unreinforced concrete mixes referred to in Sentence (1) shall not exceed,

(a) 1/5 the distance between the sides of vertical forms, or

(b) 1/3 the thickness of flatwork.

(1) A 40 kg bag of cement contains 28 L.

Text · e-Laws consolidated snapshot

Table 9.3.1.7. Concrete Mixes Forming Part of Sentence 9.3.1.7.(1)

Column 1

Column 2

Column 3

Column 4

Column 5

Column 6

Column 7

Maximum Size of Coarse Aggregate, mm

Materials, volume

Cement

Fine Aggregate (damp average coarse sand)

Coarse Aggregate (gravel or crushed stone)

Parts

L(1)

Parts

L

Parts

L

14

1

28

1.75

49

2

56

20

1

28

1.75

49

2.5

70

28

1

28

2

56

3

84

40

1

28

2

56

3.5

98

Notes to Table 9.3.1.7.: