1.0.1 This code has been prepared for the purpose of ensuring the quality of building water supply and drainage design, set the design to meet the basic requirement of safety, hygiene, applicability, economy.
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.
1 General
2 Terms, Symbols
2.1 Terms
2.2 Symbols
3 Water supply
3.1 Rated water consumption and water pressure
3.2 Water quality and water quality pollution protection
3.3 System selection
3.4 Pipe material, fittings and water meter
3.5 Piping layout and pipe laying
3.6 Design flow and hydraulic calculation of pipe
3.7 Water tower, Water tank, Reservoir
3.8 Pressurizing equipment, pump house
3.9 Swimming pool and aquatic recreation pool
3.10 Cooling tower and circulation cooling water
3.11 Waterscape
4 Water Drainage
4.1 Selection of drainage system
4.2 Sanitary fixture and water lock
4.3 Pipe location and pipelining
4.4 Calculation of drainage pipe
4.5 Pipe material fittings and inspection well
4.6 Vent pipe
4.7 Sewage pump and catch pit
4.8 Local domestic sewage disposal
4.9 Rain Water
5 Hot water and drinking water supply
5.1 Rated consumption, temperature and quality of hot water
5.2 Selection of hot water supply system
5.3 Calculation of heat consumption, hot water quantity and heating equipment hot supply
5.4 Water heating and storage
5.5 Calculation of net work
5.6 Pipe, fitting and pipeline laying
5.7 Potable water supply
Appendix A Residential district underground pipeline (structure) minimum net clearance between lines
Appendix B Valves and screw fittings resistance loss converted
Appendix C Water supply pipe section sanitary fixtures water supply equivalent simultaneously outflow probability calculated equation, αc coefficient values table
Appendix D Water supply pipe section designed second flow calculation table
Appendix E Drinking water number of taps simultaneously use in
Explanation of Wording in This Code
