Construction codes of Ontario

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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 ceiling finish where ceiling joists run parallel to a partition

Support for ceiling finish where ceiling joists run parallel to a partition Source : Canada Mortgage and Housing Corporation (CMHC) Ceiling joists are similar to floor joists in that they carry the weight of the room above them, but differ in the thickness and material used for their design. For example, I-joists are more commonly […]

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 […]

Support of Floor Joists

Support of Floor Joists and Beams on Masonry Foundation Walls (1) Except as permitted in Sentence (2), foundation walls of hollow masonry units supporting floor joists shall be capped with, (a) not less than 50 mm of concrete, (b) solid masonry units that are 100% solid and not less than 50 mm high, or […]

Support of Joists or Beams on Masonry Walls That Enclose Chimney Flues

Support of Joists or Beams on Masonry Walls That Enclose Chimney Flues (1) Joists or beams may be supported on masonry walls that enclose chimney flues provided the combustible members are separated from the flue by a minimum of 290 mm of solid masonry. Article 9.21.5.3 Ontario Regulation 332/12 Building Code, Information published by oncodes.ca […]

Support of Tail and Header Joists

Support of Tail and Header Joists (1) When tail joists and header joists are supported by the floor framing, they shall be supported by suitable joist hangers or nailing in accordance with Table 9.23.3.4. Article 9.23.9.7 Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only.

Support of Walls

Support of Walls (1) Non-loadbearing walls parallel to the floor joists shall be supported by joists beneath the wall or on blocking between the joists. (2) Blocking referred to in Sentence (1) for the support of non-loadbearing walls shall be not less than 38 mm by 89 mm lumber, spaced not more than 1.2 m apart. […]