PART 7 — PLUMBINGUpdated for the 2024 Ontario Building Code

7.2.6.1.Cast-Iron Drainage and Vent Pipe and Fittings

(1) Drainage piping, vent piping and fittings made of cast iron shall conform to CSA B70, “Cast iron soil pipe, fittings, and means of joining.” (2) Cast-iron soil pipe and fittings shall not be used in a water system.

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Code text is reproduced for reference from the Ontario Building Code (O. Reg. 163/24, 2024 Building Code Compendium). This page is provided for general information and is not an official copy. Always verify requirements against the official Ontario Building Code and confirm with your local building department.