Notice: This site currently shows the 2012/2017 edition of the Ontario Building Code. The current legally effective code is the 2024 edition (O.Reg. 163/24), in effect since January 1, 2025. Confirm current requirements at ontario.ca.
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The Ontario Building Code | Footings

9.22.1.3. footings

(1) footings for masonry and concrete fireplaces shall conform to Section 9.15.

In Plain Language

Fireplace footings must meet the requirements set out in this article, ensuring adequate support for this heavy masonry structure.

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.