Code Library › Volume 1 › Section 9.15 — Footings and Foundations
PART 9 — HOUSING AND SMALL BUILDINGSUpdated for the 2024 Ontario Building Code

9.15.3.3.Application of Footing Width and Area Requirements

(1) Except as provided in Sentence 9.15.3.4.(2), the minimum footing width or area requirements provided in Articles 9.15.3.4. to 9.15.3.7. shall apply to footings, where (a) the footings support (i) foundation walls of masonry, concrete, or flat insulating concrete form walls, (ii) above ground walls of masonry, flat insulating concrete form walls or light wood-frame construction, and (iii) floors and roofs of light wood-frame construction, (b) the span of supported joists does not exceed 4.9 m, and (c) the specified live load on any floor supported by the footing does not exceed 2.4 kPa. (See Table 4.1.5.3.) (2) Except as provided in Sentence 9.15.3.4.(2), where the span of the supported joists exceeds 4.9 m, footings shall be designed in accordance with Section 4.2. (3) Where the specified live load exceeds 2.4 kPa footings shall be designed in accordance with Section 4.2.

This provision includes a table — formatting is preserved from the source; refer to the official code for the authoritative layout.

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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.