The design must keep water within the Category 1 area, whether the shower is enclosed or unenclosed. If a shower or wet area needs a floor waste, its floor drains to that waste. For a Category 2 area, waterproofing reaches at least 1 500 mm out from where the shower rose connects to the substrate, with the waterstop provisions of Clause 4.8.2. Notes advise that movement joints must not compromise the wet area and that the design should limit causes of efflorescence.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.