Construction codes of Ontario

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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 […]

Subflooring Edge Support

Subflooring Edge Support (1) Where the edges of panel-type subflooring are required to be supported, such support shall consist of tongue-and-groove panel edges or not less than 38 mm by 38 mm blocking securely nailed between framing members. Article 9.23.14.3. Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only.

Subflooring Material Standards

Subflooring Material Standards (1) Except as provided in Sentence (2), wood-based panels for subfloors shall conform to, (a) CSA O121, “Douglas Fir Plywood”, (b) CSA O151, “Canadian Softwood Plywood”, (c) CSA O153, “Poplar Plywood”, (d) CSA O325, “Construction Sheathing”, or (e) CSA O437.0, “OSB and Waferboard”. (2) Particleboard subflooring may be […]

Subflooring Required

Subflooring Required (1) Subflooring shall be provided beneath finish flooring where the finish flooring does not have adequate strength to support the design loads. Article 9.23.14.1.Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only.

Support for Cladding Materials

Support for Cladding Materials (1) Corners and intersections shall be designed to provide adequate support for the vertical edges of interior finishes, sheathing and cladding materials, and in no instance shall exterior corners be framed with less than the equivalent of two studs. Article 9.23.10.5. Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for […]