A comparison is made between the 2005 and 2015 editions of the CECS standard"Technical specification for siphonic roof rainwater drainage".The article focuses on several important issues concerned in the industry for siphonic drainage systems of roof rainwater,including the setting of overflow outlets and overflow systems,the number of systems while a catchment area greater than 2 500 m2,the minimum pipe diameter of the system,and the location of horizontal and vertical pipe reducers,in order to better understand the essence of the relevant provisions of the technical specifications.
关键词
虹吸式屋面雨水排水系统/技术规程/溢流口/溢流系统/汇水面积/最小管径/变径位置
Key words
siphonic drainage system of roof rainwater/technical specifications/overflow outlet/overflow system/catchment area/minimum pipe diameter/pipe reducer location
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