The Ontario Building Code | Connection of Floor Outlet Fixtures
7.3.3.8. Connection of floor outlet Fixtures
(1) Every pedestal urinal, floor-mounted water closet or S-trap standard shall be connected to a fixture drain by a floor flange, except that a cast iron trap standard may be caulked to a cast iron pipe.
(2) Except as provided in Sentence (3), every floor flange shall be of brass.
(3) Where cast iron or plastic pipe is used, a floor flange of the same material may be used.
(4) Every floor flange shall be securely set on a firm base and bolted to the trap flange of the fixture, and every joint shall be sealed with a natural rubber, synthetic rubber gasket, or with a closet setting compound.
(5) Where a lead water closet stub is used, the length of the stub below the floor flange shall be at least 75 mm.
In Plain Language
Pedestal urinals, floor-mounted water closets, and similar floor-outlet fixtures must be connected to the drainage system in specific ways that ensure a secure, leak-free seal at the floor.
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.