Code Library › Volume 1 › Section 9.4 — Structural Requirements
PART 9 — HOUSING AND SMALL BUILDINGSUpdated for the 2024 Ontario Building Code

9.4.4.6.Walls Supporting Drained Earth (See Note A-9.4.4.6. and 9.15.1.1.))

(1) Except where constructed in accordance with Section 9.15., walls supporting drained earth shall be designed (a) for a pressure equivalent to that exerted by a fluid with a density of not less than 480 kg/m 3 and a depth equal to that of the retained earth, or (b) in accordance with Section 4.2. so as to be able to resist the loads and effects described in Article 4.1.2.1. (2) Walls supporting other than drained earth shall be designed (a) for the pressure described in Clause (1)(a) plus the fluid pressure of the surcharge, or (b) in accordance with Section 4.2. so as to be able to resist the loads and effects described in Article 4.1.2.1.
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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.