Given the following average hourly demand rates in gallons per minute, (a) find the uniform 24-hour pumping rate and the required storage necessary to supply for this demand; (b) if the period of pumping is 12 hours (from 6 am to 6 pm) find the required storage. Time Demand Rate 12 2000 PM 1 AM 23 4 5 6 7 1900 1800 1795 1700 1800 1910 3200 Time 8 AM 9 10 11 12 AM 1 PM 2 3 Demand Rate 5000 5650 6000 6210 6300 6500 6460 6430 Time Demand Rate 4 6500 5 6 7 8 9 10 11 6700 7119 9000 8690 5220 2200 2100

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Storm Sewers and Detention

The storm drains system transports rainwater or stormwater and other runoff from roads, parking lots, and roof downpipes directly to nearby creeks, rivers, or the sea without any treatment.