Code Library › Volume 1 › Section 9.17 — Columns
PART 9 — HOUSING AND SMALL BUILDINGSUpdated for the 2024 Ontario Building Code

9.17.5.1.Materials

(1) Unit masonry columns shall be built of masonry units (a) conforming to CSA A165.1, “Concrete block masonry units,” and (b) having a compressive strength over the net area of the block of not less than 15 MPa.
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Code text is reproduced for reference from the Ontario Building Code (O. Reg. 163/24, 2024 Building Code Compendium). This page is provided for general information and is not an official copy. Always verify requirements against the official Ontario Building Code and confirm with your local building department.