Construction codes of Ontario

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Cold Weather Requirements Concrete

Cold Weather Requirements Concrete (1) When the air temperature is below 5°C , concrete shall be, (a) kept at a temperature of not less than 10°C or more than 25°C while being mixed and placed, and (b) maintained at a temperature of not less than 10°C for 72 h after placing. (2) No frozen […]

Column Footings

Locate footings for posts or columns (Figures 32 and 33) so that the members they will support are centered. Footings vary in size depending on the allowable soil pressure and the load they support. On average stable soil, common sizes are 0.4 m2 (4.3 sq. ft.)—about 640 × 640 mm (25 × 25 in.)—for one-storey […]

Compacting or Filling With Concrete

Compacting or Filling With Concrete (1) The soil in trenches beneath footings for sewers and watermains shall be compacted by tamping up to the level of the footing base, or shall be filled with concrete having a strength not less than 10 MPa to support the footing. Article 9.12.4.1 Ontario Regulation 332/12 Building Code, Information […]

Compressive Strength

(1) Except as provided elsewhere in this Part, the compressive strength of unreinforced concrete after 28 days shall be not less than, (a) 32 MPa for garage floors, carport floors and all exterior flatwork, (b) 20 MPa for interior floors other than those for garages and carports, and (c) 15 MPa for all […]

Compressive Strength Concrete Block

Compressive Strength Concrete Block (1) The compressive strength of concrete blocks shall conform to Table 9.20.2.7. Table 9.20.2.7.Compressive Strength of Concrete Blocks Forming Part of Sentence 9.20.2.7.(1) Article and Table 9.20.2.7 Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only.

Concrete Block Foundation Walls

Concrete Block Foundation Walls Concrete blocks are available in various sizes and shapes, but the most common ones are modular sizes 200 mm (8 in.) high, 400 mm (16 in.) long, and 150, 200, 250 or 300 mm (6, 8, 10 or 12 in.) wide. The actual size is 9.5 mm (3⁄8 in.) less than […]

Concrete block wall parging

Concrete block wall parging Parge the outside face of concrete block walls with at least 6 mm (1⁄4 in.) of Portland cement plaster, forming a cove on the outside perimeter joint between the footings and the wall (Figure 45). Dampproof the wall by applying at least one heavy coat of bituminous material over the parging […]