【Daily Question】Utilities - Water Supply and Drainage - 20191106

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A 6-story student dormitory is planned to be built, with 20 dormitories on each floor and 4 students in each dormitory; the entire building will be supplied with water from rooftop water tanks. The water quota per person is set at 100 L/(person·day); the hourly variation coefficient Kh is 2.5, and the usage time T is 24 hours. The fire-fighting water storage capacity in the tank is 6 m3, with the water in the tank being pumped up by a domestic water supply pump. Then the maximum daily water consumption of the building is (  ) m3/d, the water storage volume for regulating domestic water use is (  ) m3, and the flow rate of the water pump in the tank is (  ) m3/h. A 48,5.4,5:       B 48,3.0,5:     C 48,8.5,5:      D 48,2.4,2 5.   Answer: C is the correct answer. In accordance with Article 3.7.5, Paragraph 1, and Article 3.8.3 of the current Code for Design of Building Water Supply and Drainage, the maximum daily water consumption is 48 m3/d, the regulation volume is ≥ 2.5 + 6 m3, and the flow rate of the water tank feed pump is 5 m3/h.