The Ontario Building Code | Footings
9.21.4.3. footings
(1) footings for masonry chimneys and concrete chimneys shall conform to the requirements in Section 9.15.
In Plain Language
Chimney footings must meet the requirements set out in this article, ensuring adequate support for this often tall, heavy 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.