7.3.3.8.Connection of Floor or Wall Outlet Fixtures

(1) Pedestal urinals, floor-mounted water closets or S-trap standards shall be connected to a fixture drain by a floor
     flange or other means of connection, except that a cast-iron trap standard may be caulked to a cast-iron pipe.

     (2) Except as provided in Sentence (3), floor flanges shall be brass.

     (3) Where cast-iron or plastic pipe is used, a floor flange of the same material is permitted to be used.

     (4) Floor flanges and fixtures shall be securely set on a firm base and fastened to the floor or trap flange of the fixture.

     (5) Water-closet bowls shall be securely attached to the floor flange, floor or wall carrier.

     (6) Joints in a floor flange or between a fixture and the drainage system shall be sealed with a resilient, watertight and
     gas-tight seal.

     (7) Where a lead water-closet stub is used, the length of the stub below the floor flange shall be not less than 75 mm.

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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.