Construction codes of Ontario

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Natural Ventilation Table

Table 9.32.2.1.Natural Ventilation Table Forming Part of Sentence 9.32.2.1.(1) Table 9.32.2.1 Ontario Regulation 332/12 Building Code, Information published by oncodes.ca for educational purposes only.

Notching of Lumber Roof, Ceiling or Floor Joists

Notching of Lumber Roof, Ceiling or Floor Joists Notches made on the upper side of lumber joists near their ends (Figure 148) must be located within one-half the joist depth from the edge of the bearing and their depth cannot be more than one-third of the joist depth. Notches are not permitted on the bottom […]

Number of insulated conductors in boxes

Number of insulated conductors in boxes Table 23 (See Rule 12-3034.) Table 23 (Concluded) Source: Table 23, CSA C22.1:21, Canadian Electrical Code, Part 1 (25th Edition), Safety Standard for Electrical Installations. © 2021 Canadian Standards Association. Please visit store.csagroup.org

Openings in Loadbearing Walls

Openings in Loadbearing Walls (1) Openings in loadbearing walls greater than the required stud spacing shall be framed with lintels designed to carry the superimposed loads to adjacent studs. (2) Except as provided in Sentence 9.23.12.3.(2), where two or more members are used in lintels, they shall be fastened together with not less than 82 mm nails […]

Openings in Non-Loadbearing Walls

Openings in Non-Loadbearing Walls (1) Except as provided in Sentence (2), openings in non-loadbearing walls shall be framed with not less than 38 mm material the same width as the studs securely nailed to adjacent studs. (2) Openings for doors in non-loadbearing walls required to be fire separations with a fire-resistance rating shall be framed with the […]

Outdoor Intake and Exhaust Openings

Outdoor Intake and Exhaust Openings (1) Separate air intake and exhaust outlet openings, when located on the same wall or roof, shall be installed so as to avoid contamination of the ventilation air by the exhaust air. (2) Intake openings shall be located so as to avoid contamination of the ventilation air from other local […]

Outlet box supports

Outlet box supports (see Appendix B) 1) Except as permitted by Subrule 6), boxes and fittings shall be firmly secured to studs, joists, or similar fixed structural units other than wooden, metal, or composition lath, in accordance with this Rule. 2) Where ganged sectional boxes are used, they shall be secured to metal supports or […]