The following land and the land use of the area with the corresponding runoff coefficients are given in the figure. Find the equivalent runoff coefficient, time of concentration, rainfall intensity for 5 years, and the discharge, before and after converting the parks to malls and shopping centers with an equivalent runoff coefficient of 0.85. The channel speed is 1 min/m. 1000 R0.989 2 years 100m 150m S years R0.9972 R0.9976 A 20 ye ars 3 min 7 min Residential area, C=0.85 75 R=0.9984 100 Parking, C=0.85 R0.9993 8 min 4 min 75 10 Playground, C=0.5 Parks, C=0.3 150m 100m Rainfall Intensiry (mm/hr)

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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The following land and the land use of the area with the corresponding runoff coefficients are given in the
figure. Find the equivalent runoff coefficient, time of concentration, rainfall intensity for 5 years, and the
discharge, before and after converting the parks to malls and shopping centers with an equivalent runoff
coefficient of 0.85. The channel speed is 1 min/m.
1000
R0.989
2 years
100m
150m
S years
R0.9972
R0.9976
R-0.9984
A 20 years
3 min
7 min
75
100
Parking, C=0.85
R0.9993
Residential area, C=0.85
8 min
4 min
75
10
Playground, C-0.5
Parks, C=0.3
150m
100m
10
100
1000
Duration (minutes)
Rainfall Intensiry (mm/hr)
Transcribed Image Text:The following land and the land use of the area with the corresponding runoff coefficients are given in the figure. Find the equivalent runoff coefficient, time of concentration, rainfall intensity for 5 years, and the discharge, before and after converting the parks to malls and shopping centers with an equivalent runoff coefficient of 0.85. The channel speed is 1 min/m. 1000 R0.989 2 years 100m 150m S years R0.9972 R0.9976 R-0.9984 A 20 years 3 min 7 min 75 100 Parking, C=0.85 R0.9993 Residential area, C=0.85 8 min 4 min 75 10 Playground, C-0.5 Parks, C=0.3 150m 100m 10 100 1000 Duration (minutes) Rainfall Intensiry (mm/hr)
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