1.0.2 This code is applicable to the water supply and drainage design of residential area, public building area, civil building, and also applicable to the domestic water and drainage and factory roof rain-fall run-off design of industrial building.
But when designing the following projects, current relevant specified code or regulation must be complied:
1 Collapsible soil, perennially frozen soil and expansive soil region building.
2 Building with anti-seismic intensity more than 9.
3 Mineral water cure, civil air defense works.
4 Industrial production water supply and drainage.
5 Building reclaimed water and rainwater utilization.
1.0.3 Building water supply and drainage design must meet the application demands and also provide convenience for construction installation, operation management, maintenance inspection and safety protection.
1.0.3A This code specifies the basic requirements for building water supply and drainage design. In case that this code is in conflict with the national laws and administrative regulations, the latter will prevail.
1.0.4 Building water supply and drainage engineering design must comply with this code, in addition, must comply current relevant national standard codes requirement.