Construction codes of Ontario

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Spiral Stairs

(1) Spiral stairs shall have, (a) handrails on both sides, the outer handrail being not less than 1 070 mm high, (b) a clear width not less than 660 mm between handrails, (c) risers that are not more than 240 mm high, (d) treads that, (i) are a minimum of 190 […]

Steel Columns End Bearing Plates

Steel Columns End Bearing Plates (1) Except as permitted in Sentence (2), steel columns shall be fitted with not less than 100 mm by 100 mm by 6.35 mm thick steel plates at each end, and where the column supports a wooden beam, the top plate shall extend across the full width of the beam. (2) The […]

Steel Columns Size and Thickness

Steel Columns Size and Thickness (1) Except as permitted by Sentence (2), steel pipe columns shall have an outside diameter of not less than 73 mm and a wall thickness of not less than 4.76 mm. (2) Columns of sizes other than as specified in Sentence (1) are permitted to be used where the loadbearing capacities are […]

Stud Posts Built into Walls

Stud Posts Built into Walls (1) Except as provided in Sentences (2) and (3), stud posts shall be designed in accordance with Part 4. (2) The number of studs in a wall directly below a girder truss or roof beam shall conform to Tables A-34 to A-37, provided, (a) the studs are fastened together to […]

Studs at Sides of Openings

Studs at Sides of Openings (1) Except as provided in Sentence (2), studs shall be doubled on each side of openings so that the inner studs extend from the lintel to the bottom wall plate and the outer studs extend from the top wall plates to the bottom wall plate. (2) Single studs are permitted to […]

Subfloor

Subfloor Plywood, OSB or tongue-and-grooved lumber no wider than 184 mm (8 in. nominal) is typically used for subflooring. Minimum thicknesses for subflooring are shown in Table 22. Plywood and OSB are often used as subflooring under wood-strip flooring or as a combination subfloor and underlay for resilient flooring or ceramic tile. When used as […]

Subfloor Thickness or Rating

Subfloor Thickness or Rating (1) Except as provided in Sentences (2) and (3), subfloors shall conform to Table 9.23.14.5.A. or 9.23.14.5.B. (2) Where the finished flooring consists of not less than 19 mm matched wood strip flooring laid at right angles to joists, spaced not more than 610 mm o.c., subflooring shall be permitted to consist of […]