The Ontario Building Code | Application of Footing Width and Area Requirements

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.

(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.