Construction codes of Ontario

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Notches or beam pockets in foundation walls

Notches or beam pockets in foundation walls Boxes that will form notches for the ends of floor beams would also be inserted into the foundation formwork prior to pouring the concrete (Figure 39). Treat wood beams abutting concrete below grade with preservative to prevent decay, or leave at least 12 mm (1⁄2 in.) of clearance […]

Notching of Framing Members

Notching of Framing Members (1) Floor, roof and ceiling framing members are permitted to be notched provided the notch is located on the top of the member within half the joist depth from the edge of bearing and is not deeper than one-third the joist depth, unless the depth of the member is increased by the […]

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 […]

Orientation of Studs

Orientation of Studs (1) Except as permitted in Sentences (2) and (3), all studs shall be placed at right angles to the wall face. (2) Studs on the flat are permitted to be used in gable ends of roofs that contain only unfinished space or in non-loadbearing interior walls within the limits described in Article […]