Three defining points on the pump curve are as follows: 0 L/min at 610 m of head 1,135 L/min at 54.9 m of head and 2271 L/min at 45.7 m of head. The pump was originally sized to deliver 1,135 L/min with enough head to pump against the tank when it is full. Assume that the tank starts with a water surface elevation of 115.8 m. To avoid the cost of an elevated tank, this 24.4-m-diameter tank is located on a hillside, 610 m away from the main system. The bottom of the tank is at 114.6 m (high enough to produce 243 kPa at the highest node), and the top is approximately 6.1 m higher. The well system alone cannot efficiently provide the amount of water needed for fire protection, so an elevated storage tank is also needed. The water is then pumped from this tank into the rest of the system. The water is treated and placed in a ground-level tank (shown in the figure as a reservoir because of its plentiful supply), which is maintained at a water surface elevation of 64 m. The source of water for the system is a pumped well. The proposed system layout is shown in the following figure. A distribution system is needed to supply water to a resort development for normal usage and emergency purposes (such as fighting a fire).
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