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. Group wash-up equipment shall conform to the requirements of Section 402. Every 20 inches (508 mm) of rim space shall be considered as one lavatory.
Cultured marble vanity tops with an integral lavatory shall conform to CSA B45.5/ IAPMO Z124.
Moveable lavatory systems shall comply with ASME A112.19.12.