An asphalt pavement drains into a rectangular concrete channel. The catchment surface has an average slope of
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An asphalt pavement drains into a rectangular concrete channel. The catchment surface has an average slope of 1.0%, and the distance from the catchment boundary to the drain is 30 m. The drainage channel is 60 m long, 20 cm wide, and 25 cm deep, and has a slope of 0.6%. For an effective rainfall rate of 50 mm/h, the flowrate in the channel is estimated to be 0.02 m 3 /s. The Manning n for an asphalt surface is 0.011 and for a concrete surface is 0.013. Estimate the time of concentration of overland flow for the catchment and estimate the time of concentration for the drainage channel.
Related Book For
Hydrology and Floodplain Analysis
ISBN: 978-0132567961
5th edition
Authors: Philip B. Bedient, Wayne C. Huber, Baxter E. Vieux
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