Physics
Mechanics
The paved parking lot depicted in Figure P11.8.4 drains as

The paved parking lot depicted in Figure P11.8.4 drains as sheet flow into a concrete side channel

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The paved parking lot depicted in Figure P11.8.4 drains as sheet flow into a concrete side channel that discharges into a stormwater-management pond. The travel time across the parking lot as sheet flow is 5 min, and the travel time through the entire drainage channel is 2 min. Thus, the time of concentration for the parking lot is 7 min. Determine the peak discharge resulting from a 5-yr, 5-min storm based on the rational equation using Figure 11.26 for the rainfall intensity.
Figure P11.8.4

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270 2" Drainage channel (5.0% Slope) Channel cross 600' section 0.5% Slope

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Applying the rational equation 1119 yields Q p C I A 09061 inhr162 ft 2...View the full answer

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Question Posted: Apr 26, 2016 08:14 AM

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