(1) Water closets and urinals shall be certified to CAN/CSA-B45.0, “General Requirements for Plumbing Fixtures”.
(2) Except as provided in Sentence (3), the flush cycle for each fixture that is a water closet or urinal shall not exceed the maximum water consumption per flush cycle listed for that fixture in Table 7.6.4.2.A.
(3) In buildings classified as Group C occupancy, the flush cycle for each fixture that is a water closet or urinal shall not exceed the maximum water consumption per flush cycle listed for that fixture in Table 7.6.4.2.B.
(4) Sentences (2) and (3) do not apply to a fixture located in an existing building where the chief building official is satisfied that compliance with the requirement is impracticable because of maintenance or operational difficulties.
(5) Urinals shall be equipped with a device capable of preventing automatic flush cycles when not in use.