Baths and spas are supported so they do not distort or crack. Where recessed into a wall, the water-resistant wall surface passes down inside the rim and a Type 2 sealant joint, compatible with the membrane, connects wall substrate and bath. A bath end wall inside a shower area is treated as a shower wall, structural integrity is maintained during installation, and insert baths have a waterstop around their periphery.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.