Concrete, both non-reinforced and reinforced, is often used for footings, foundation walls, basement floor slabs and garage slabs-on-grade. Concrete for columns, fireplaces, chimneys and foundation walls must have a minimum strength of 15 MPa (2,200 psi). Basement floors must have a minimum strength of 20 MPa (3,000 psi). Garage and carport floors, exterior steps and […]

Concrete Mixes (1)  For pre-mixed concrete and for the site-batched concrete mixes described in Table 9.3.1.7., the maximum ratio of water to cementing materials measured by weight shall 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 […]

Concrete Mixes Table Table 9.3.1.7.Site-Batched Concrete Mixes Forming Part of Sentence 9.3.1.7.(1) Notes to Table 9.3.1.7.: (1) A 40 kg bag of cement contains 28 L. Table 9.3.1.7 Ontario Regulation 332/12 Building Code,   Information published by oncodes.ca for educational purposes only.