Structural Analysis
Structural Analysis
6th Edition
ISBN: 9781337630931
Author: KASSIMALI, Aslam.
Publisher: Cengage,
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The 10 min unit hydrograph for a 2.25 km2 urban catchment is given by;
Time
0 30 60 90 120 150 180 210 240 270 300 330 360 390
(min)
Runoff
0 1.2 2.8 1.7 1.4 1.2 1.1 0.91 0.74 0.61 0.5 0.28 0.17 0
(m³/s)
1. Verify that the unit hydrograph is consistent with a 1 cm rainfall excess
2. Estimate the runoff hydrograph for a 10 min rainfall excess of 3.5 cm
3. Estimate the runoff hydrograph for a 20 min rainfall excess of 8.5 cm
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Transcribed Image Text:The 10 min unit hydrograph for a 2.25 km2 urban catchment is given by; Time 0 30 60 90 120 150 180 210 240 270 300 330 360 390 (min) Runoff 0 1.2 2.8 1.7 1.4 1.2 1.1 0.91 0.74 0.61 0.5 0.28 0.17 0 (m³/s) 1. Verify that the unit hydrograph is consistent with a 1 cm rainfall excess 2. Estimate the runoff hydrograph for a 10 min rainfall excess of 3.5 cm 3. Estimate the runoff hydrograph for a 20 min rainfall excess of 8.5 cm
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