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Problem 1. The following are the ordinates of the hydrograph flow from a catchment area of 770 km2 due to a 6-hr rainfall. a. Derive the ordinates of the 6-hr unit hydrograph. Assume that the graph of the baseflow is linear with respect to time. b. Plot the direct runoff hydrograph. c. Determine the rainfall excess in terms of (i) volume in m3 and (2) depth in cm. d. Plot the unit hydrograph. Time from the beginning of the storm (hr) 0 6 12 18 24 30 36 42 48 54 60 66 72 Discharge (cumecš) 40 65 215 360 400 350 270 205 145 100 70 50 42

Problem 1. The following are the ordinates of the hydrograph flow from a catchment area of 770 km2 due to a 6-hr rainfall. a. Derive the ordinates of the 6-hr unit hydrograph. Assume that the graph of the baseflow is linear with respect to time. b. Plot the direct runoff hydrograph. c. Determine the rainfall excess in terms of (i) volume in m3 and (2) depth in cm. d. Plot the unit hydrograph. Time from the beginning of the storm (hr) 0 6 12 18 24 30 36 42 48 54 60 66 72 Discharge (cumecš) 40 65 215 360 400 350 270 205 145 100 70 50 42

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Problem 1. The following are the ordinates of the hydrograph flow from a catchment area of 770 km2 due to a 6-hr rainfall. a. Derive the ordinates of the 6-hr unit hydrograph. Assume that the graph of the baseflow is linear with respect to time. b. Plot the direct runoff hydrograph. c. Determine the rainfall excess in terms of (i) volume in m3 and (2) depth in cm. d. Plot the unit hydrograph. Time from the beginning of the storm (hr) 0 6 12 18 24 30 36 42 48 54 60 66 72 Discharge (cumecs) 40 65 215 360 400 350 270 205 145 100 70 50 42
Transcribed Image Text:Problem 1. The following are the ordinates of the hydrograph flow from a catchment area of 770 km2 due to a 6-hr rainfall. a. Derive the ordinates of the 6-hr unit hydrograph. Assume that the graph of the baseflow is linear with respect to time. b. Plot the direct runoff hydrograph. c. Determine the rainfall excess in terms of (i) volume in m3 and (2) depth in cm. d. Plot the unit hydrograph. Time from the beginning of the storm (hr) 0 6 12 18 24 30 36 42 48 54 60 66 72 Discharge (cumecs) 40 65 215 360 400 350 270 205 145 100 70 50 42
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