The Ontario Building Code | Permafrost
4.2.4.10. Permafrost
(1) Where conditions of permafrost are encountered or proven to exist, the design of the foundation shall be based upon analysis of these conditions by a person especially qualified in that field of work.
In Plain Language
Where permafrost conditions are encountered or known to exist, the foundation design must be based on analysis carried out by a person especially qualified in permafrost engineering, given its unique and demanding design challenges.
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.