A rainfall excess of 2.1 cm in 1 hour produced a triangular runoff hydrograph with a peak of 20 m3/s at 2 hours and a return to zero at 10 hours. According to the UH theory, the runoff hydrograph for rainfall excess of 4.2 cm in the same time period: A) would have a peak of 40 m3/s and a total runoff period of 20 hours B) would have a peak of 40 m3/s at 4 hours C) would have a total volume of 720 000 m3 and a peak of 40 m3/s D) Cannot be determined since the unit is not 1 cm
A rainfall excess of 2.1 cm in 1 hour produced a triangular runoff hydrograph with a peak of 20 m3/s at 2 hours and a return to zero at 10 hours. According to the UH theory, the runoff hydrograph for rainfall excess of 4.2 cm in the same time period: A) would have a peak of 40 m3/s and a total runoff period of 20 hours B) would have a peak of 40 m3/s at 4 hours C) would have a total volume of 720 000 m3 and a peak of 40 m3/s D) Cannot be determined since the unit is not 1 cm
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A rainfall excess of 2.1 cm in 1 hour produced a triangular runoff hydrograph with a peak of 20 m3/s at 2 hours and a return to zero at 10 hours. According to the UH theory, the runoff hydrograph for rainfall excess of 4.2 cm in the same time period:
A) would have a peak of 40 m3/s and a total runoff period of 20 hours
B) would have a peak of 40 m3/s at 4 hours
C) would have a total volume of 720 000 m3 and a peak of 40 m3/s
D) Cannot be determined since the unit is not 1 cm
Transcribed Image Text:A rainfall excess of 2.1 cm in 1 hour produced a triangular runoff hydrograph with a peak of
20 m3/s at 2 hours and a return to zero at 10 hours. According to the UH theory, the runoff
hydrograph for rainfall excess of 4.2 cm in the same time period
O would have a peak of 40 m3/s and a total runoff period of 20 hours
O would have a peak of 40 m3/s at 4 hours
O would have a total volume of 720 000 m3 and a peak of 40 m3/s
O Cannot be determined since the unit is not 1 cm
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