(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.