In Plain Language

Excavated or exposed soil must be protected from freezing as set out in this article, since frozen ground behaves differently and can create problems for foundation work.

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.