The Ontario Building Code | Adjustments to Footing Widths for Exterior Walls
9.15.3.5. Adjustments to footing Widths for exterior Walls
(1) The strip footing widths for exterior walls shown in Table 9.15.3.4. shall be increased by,
(a) 65 mm for each storey of masonry veneer over wood frame construction supported by the foundation wall,
(b) 130 mm for each storey of masonry construction supported by the foundation wall, and
(c) 150 mm for each storey of flat insulating concrete form wall construction supported by the foundation wall.
In Plain Language
Footing widths for exterior walls must be adjusted as set out in this article, accounting for factors specific to a building's outer walls.
This is a plain-language summary of the 2012/2017 Ontario Building Code text above, for general understanding only and not a substitute for the Code. Always confirm current requirements against the 2024 edition (O.Reg. 163/24) or a qualified professional before construction.