中华人民共和国住房和城乡建设部公告

前　言

1　总　则

2　术语和符号

• 2.1　术　语

• 2.2　符　号

3　给　水

• 3.1　一般规定

• 3.2　用水定额和水压

• 3.3　水质和防水质污染

• 3.4　系统选择

• 3.5　管材、附件和水表

• 3.6　管道布置和敷设

• 3.7　设计流量和管道水力计算

• 3.8　水箱、贮水池

• 3.9　增压设备、泵房

• 3.10　游泳池与水上游乐池

• 3.11　循环冷却水及冷却塔

• 3.12　水　景

• 3.13　小区室外给水

4　生活排水

• 4.1　一般规定

• 4.2　系统选择

• 4.3　卫生器具、地漏及存水弯

• 4.4　管道布置和敷设

• 4.5　排水管道水力计算

• 4.6　管材、配件

• 4.7　通气管

• 4.8　污水泵和集水池

• 4.9　小型污水处理

• 4.10　小区生活排水

5　雨　水

• 5.1　一般规定

• 5.2　建筑雨水

• 5.3　小区雨水

6　热水及饮水供应

• 6.1　一般规定

• 6.2　用水定额、水温和水质

• 6.3　热水供应系统选择

• 6.4　耗热量、热水量和加热设备供热量的计算

• 6.5　水的加热和贮存

• 6.6　太阳能、热泵热水供应系统

• 6.7　管网计算

• 6.8　管材、附件和管道敷设

• 6.9　饮水供应

附录A　回流污染的危害程度及防回流设施选择

附录B　给水管段卫生器具给水当量同时出流概率计算式αc系数取值

附录C　给水管段设计秒流量计算

附录D　阀门和螺纹管件的摩阻损失的折算补偿长度

附录E　小区地下管线（构筑物）间最小净距

附录F　屋面溢流设施泄流量计算

附录G　重力流系统立管的最大设计排水流量

附录H　我国的太阳能资源分区及其特征

附录J　饮用水嘴同时使用数量计算

本标准用词说明

引用标准名录

1　General provisions

2　Terms and symbols

• 2.1　Terms

• 2.2　Symbols

3　Water supply

• 3.1　General requirements

• 3.2　Rated water consumption and water pressure

• 3.3　Water quality and contamination prevention

• 3.4　System selections

• 3.5　Pipe materials，appurtenances and water meters

• 3.6　Piping layout and installation

• 3.7　Design flow and pipe hydraulic calculation

• 3.8　Water tanks，reservoirs

• 3.9　Pressurizing equipments，pump stations

• 3.10　Swimming pools and aquatic recreation pools

• 3.11　Cooling water circulation and cooling towers

• 3.12　Waterscape

• 3.13　Outdoor water supply in sub-district

4　Drainage

• 4.1　General requirements

• 4.2　Drainage systems selection

• 4.3　Plumbing fixtures ，floor drains and traps

• 4.4　Piping layout and installation

• 4.5　Hydraulic calculation of drainage piping

• 4.6　Pipe materials，fittings

• 4.7　Vent pipes

• 4.8　Sewage pumps and sump

• 4.9　Small sanitary waster treatment

• 4.10　Outdoor sanitary drainage in sub-district

5　Rain drainage

• 5.1　General requirements

• 5.2　Building raniwater

• 5.3　Outdoor rainwater in sub-district

6　Hot water and drinking water supply

• 6.1　General requirements

• 6.2　Rated consumption，temperature and hot water quality

• 6.3　Hot water supply systems selections

• 6.4　Calculation of heat consumption hot water consumption and power capability of heating equipment

• 6.5　Water heating and storage

• 6.6　Hot water supply systems of solar and heat pump

• 6.7　Calculation of hot water pipe net

• 6.8　Pipe materials，appurtenances and piping installation

• 6.9　Drinking water supply

Appendix A　Hazard degree of backflow & the selection of backflow prevention facilities

Appendix B　Water supply pipe section plumbing fixtures water supply equivalent simultaneously outflow probability calculated equation α c coefficient values

Appendix C　Design peak flow calculation for water supply piping

Appendix D　Equivalent length for friction loss of values and threaded fittings resistance

Appendix E　Minimum clearance between underground pipelines （structure） for sub-district

Appendix F　Calculation for the discharge volume of roof rainwater overflow facilities

Appendix G　The maximum design discharge capacity of the vertical ttube for the gravity flow syste

Appendix H　Subarea and characteristics of solar energy resources in China

Appendix J　Calculation of the number of drinking water taps for simultaneously use

Explanation of wording in this standard

List of quoted standards