[Utilities – Water Supply and Drainage Section] 20181118

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In the water supply system, ( ) is calculated based on the highest hourly flow rate on the most busy day. a. Water treatment structures b. Secondary pumping station c. Secondary pumping station in a water tower-free pipeline network d. Pipeline network Answer: c, d. Water treatment facilities are designed based on the highest average daily flow rate; pipeline networks and secondary pumping stations that do not have water towers require design based on the highest peak daily water consumption. When water towers are present in the pipeline network, the design of secondary pumping stations takes into account hierarchical flow rates, with the highest level of flow rate serving as the design value. Generally speaking, it is incomplete to say that secondary pumping stations are designed based solely on the highest peak daily flow rate; the design flow rate for pipeline networks is, whether or not there are water towers, always the highest peak daily flow rate