(1) Every pedestal urinal, floor-mounted water closet or S-trap standard 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), 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 and fixture shall be securely set on a firm base and fastened to the floor or trap flange of the fixture.
(4.1) Every joint in a floor flange or between a fixture and the drainage system shall be sealed with a resilient, watertight and gas-tight seal.
(5) Where a lead water closet stub is used, the length of the stub below the floor flange shall be at least 75 mm.