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Unformatted text preview: Homework Problem #9 A square concrete box culvert is 100 ft long, on a 5% slope, and with a 45 wing wall on both sides of the inlet and a free outlet (i.e., tailwater level is low and not restricting culvert outflow). The Manning roughness coefficient is 0.013. The design discharge is 60 cfs. The permitted head on the culvert is 6 ft above the invert at the entrance. Approach and exit channel velocity heads are negligible. Determine the minimum required culvert size for a square edged entrance, with a head loss coefficient of 0.5 1...
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This note was uploaded on 09/08/2010 for the course CE 251 at San Jose State University .