某6层住宅楼，排水采用合流制，一层单独排水。其中一个卫生间内设一根排水立管，卫生间内设有1个大便器（q＝1.5L/s，b=4.50%）、1个浴盆（q＝1.0L/s，N＝3.00）、1个洗脸盆（q＝0.25L/s，N=0.75%）和1个洗衣机（q＝0.5L/s，N=1.5%），若立管采用UPVC排水材料，则立管的管径应为（）mm A.50 B.75

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某6层住宅楼，排水采用合流制，一层单独排水。其中一个卫生间内设一根排水立管，卫生间内设有1个大便器（q＝1.5L/s，b=4.50%）、1个浴盆（q＝1.0L/s，N＝3.00）、1个洗脸盆（q＝0.25L/s，N=0.75%）和1个洗衣机（q＝0.5L/s，N=1.5%），若立管采用UPVC排水材料，则立管的管径应为（）mm

A.50

B.75

C.110

D.125

积分

水工程施工

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