PROBLEM 2: Using the cumulative rainfall hyetagraph given below for a 150-km² watershed, determine the abstractions and the excess rainfall hyetograph using Hortan's equation with fo = 40 mm/h, fe = 10 mm/h, and k = 2 h-l. Assume that an interception storage of 10 mm is satisfied before infiltration begins. Also, determine the depth and volume of excess rainfall and its duration. Time (h) 2 3 5 6 Cumulative rainfall (mm) 25 70 115 140 160 180

Structural Analysis
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Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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PROBLEM 2: Using the cumulative rainfall hyetograph given below for a 150-km2 watershed,
determine the abstractions and the excess rainfall hyetograph using Horton's equation with fo =
40 mm/h, fe = 10 mm/h, and k = 2 h-1. Assume that an interception storage of 10 mm is satisfied
before infiltration begins. Also, determine the depth and volume of excess rainfall and its
duration.
Time (h)
1 2
3
4
5
6
Cumulative rainfall (mm)
25
70
115
140
160
180
Transcribed Image Text:PROBLEM 2: Using the cumulative rainfall hyetograph given below for a 150-km2 watershed, determine the abstractions and the excess rainfall hyetograph using Horton's equation with fo = 40 mm/h, fe = 10 mm/h, and k = 2 h-1. Assume that an interception storage of 10 mm is satisfied before infiltration begins. Also, determine the depth and volume of excess rainfall and its duration. Time (h) 1 2 3 4 5 6 Cumulative rainfall (mm) 25 70 115 140 160 180
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