The Ontario Building Code | Corrugated Steel Pipe and Couplings
7.2.6.8. Corrugated Steel pipe and Couplings
(1) Corrugated steel pipe and couplings shall be certified to CAN/CSA-G401, "Corrugated Steel pipe Products".
(2) Corrugated steel pipe shall only be used underground outside a building in a storm drainage system.
(3) Couplings for corrugated steel pipe shall be constructed so that when installed they shall,
(a) maintain the pipe alignment,
(b) resist the separation of adjoining lengths of pipe,
(c) prevent root penetration, and
(d) prevent the infiltration of surrounding material.
In Plain Language
Corrugated steel pipe and couplings must be certified to the referenced CAN/CSA standard for corrugated steel pipe products, typically used in larger stormwater or drainage applications.
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.