- a Problem III: A 500 ft by 500 ft paved parking lot in Richmond, VA, has a runoff coefficient of C = 0.85 and is to be

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A Problem Iii A 500 Ft By 500 Ft Paved Parking Lot In Richmond Va Has A Runoff Coefficient Of C 0 85 And Is To Be 1 (163.31 KiB) Viewed 41 times

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- a Problem III: A 500 ft by 500 ft paved parking lot in Richmond, VA, has a runoff coefficient of C = 0.85 and is to be drained by a sewer pipe with a conveyance capacity equal to the peak discharge from a 5-year storm with a duration equal to the lot's time of concentration (t.). The inlet of the pipe is located at the left-bottom corner (i.e., outlet) of the parking lot. The average overland flow velocity is 0.5 ft/sec. (1) Determine to ) 1 (2) Determine the design peak discharge for the sewer pipe using the Rational Equation a (3) Develop and plot the flow hydrograph from a 15-min storm with a rainfall intensity of 2.0 in/hr using the Modified Rational Equation t (4) Develop and plot the flow hydrograph from a 30-min storm with a rainfall intensity of 2.0 in/hr using the Modified Rational Equation -- 1 a