CHEN He-miao,LIU Fang,SHAO Jian-mei.Discussion and Modification on Design Flow Calculation Methods in Standard for Design of Building Water Supply and Drainage[J].China Water & Wastewater,2021,37(16 16):54-62.
Discussion and Modification on Design Flow Calculation Methods in Standard for Design of Building Water Supply and Drainage
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
16 16
Page:
54-62
Column:
Date of publication:
2021-08-17
- Keywords:
- design flow; square root method; probability method
- Abstract:
- Design flow calculation method for residential building domestic water supply pipeline in Standard for Design of Building Water Supply and Drainage (GB 50015-2019) was mathematical analyzed. It was found that the calculation method was lack of theoretical basis, and the design flow obtained by this calculation method must be too large in small-scale pipe network, and too small in large-scale pipe network. Problems existing in calculation method of design flow by square root method for inns and hotels in the standard were analyzed, and it was found that this calculation method was not suitable for large-scale water supply networks. The problems existing in the design flow calculation method for domestic water supply pipeline design with toilet self-closed flushing valve in the standard were analyzed, and the calculation examples revealed that the design flow obtained by this method was too small. The problems existing in the design flow calculation method for domestic drainage in the standard were analyzed, which also indicated that the calculation value was too small. It was proposed that probability design flow calculation method could solve the above problems, and the method is more scientific, simple, safe and accurate than calculation methods in the current standard.
Last Update:
2021-08-17