The Ontario Building Code | Exposure of Materials
7.2.1.1. Exposure of Materials
(1) Where unusual conditions exist such as excessively corrosive soil or water, only materials suited for use in such locations shall be used.
(2) Materials and equipment used in a drainage system where excessively corrosive wastes are present shall be suitable for the purpose.
In Plain Language
Where unusual conditions exist, such as excessively corrosive soil or water, only materials suited for use in those specific locations may be used, ensuring plumbing materials match their actual exposure conditions.
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.