Code Library › Volume 1 › Section 9.8 — Stairs, Ramps, Handrails and Guards
PART 9 — HOUSING AND SMALL BUILDINGSUpdated for the 2024 Ontario Building Code

9.8.9.2.Exterior Concrete Stairs

(1) Exterior concrete stairs with more than 2 risers and 2 treads shall be (a) supported on unit masonry or concrete walls or piers not less than 150 mm in cross-section, or (b) cantilevered from the main foundation wall. (2) Stairs described in Sentence (1), when cantilevered from the foundation wall, shall be constructed and installed in conformance with Subsection 9.8.10. (3) The depth below ground level for foundations for exterior steps shall conform to the requirements in Section 9.12.
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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.