Lavatories shall conform to ASME A112.19.1/CSA B45.2, ASME A112.19.2/CSA B45.1, ASME A112.19.3/CSA B45.4 or CSA B45.5/IAPMO Z124.
Cultured marble vanity tops with an integral lavatory shall conform to CSA B45.5/IAPMO Z124.
Lavatories shall have waste outlets not less than 11/4 inch (32 mm) in diameter. A strainer, pop-up stopper, crossbar or other device shall be provided to restrict the clear opening of the waste outlet.
Movable lavatory systems shall comply with ASME A112.19.12.