The Ontario Building Code | Adjustments to Footing Area for Columns
9.15.3.7. Adjustments to footing Area for columns
(1) The footing area for column spacings other than shown in Table 9.15.3.4. shall be adjusted in proportion to the distance between columns.
In Plain Language
Footing area for columns must be adjusted as set out in this article, since a column concentrates its load onto a smaller footprint than a continuous wall footing.
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.