In Plain Language

At all phases of excavation and construction, loss of ground caused by water or any other factor must be prevented, protecting both the excavation itself and any nearby structures from undermining.

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.