7.23 A 45-min rainstorm occurs on a 9-acre urban area having a runoff coefficient of 0.7. The time of concentration has been calculated as 20 min. Incremental rainfall depths for the storm are given in the table below. Using a spreadsheet, calculate the runoff from the storm at 5-minute intervals. Plot the resulting hydrograph. Time (min) 0 10 15 20 25 30 35 40 45 50 55 60 65 70 Incremental Rainfall Depth (in.) 0 0.1 0.18 0.29 0.6 0.64 0.51 0.3 0.17 0.07 0 0 0 0 0

7.23 A 45-min rainstorm occurs on a 9-acre urban area having a runoff coefficient of 0.7. The time of concentration has been calculated as 20 min. Incremental rainfall depths for the storm are given in the table below. Using a spreadsheet, calculate the runoff from the storm at 5-minute intervals. Plot the resulting hydrograph. Time (min) 0 10 15 20 25 30 35 40 45 50 55 60 65 70 Incremental Rainfall Depth (in.) 0 0.1 0.18 0.29 0.6 0.64 0.51 0.3 0.17 0.07 0 0 0 0 0

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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Use excel to solve and show steps clearly please

7.23 A 45-min rainstorm occurs on a 9-acre urban area having a runoff coefficient of 0.7.
The time of concentration has been calculated as 20 min. Incremental rainfall depths
for the storm are given in the table below. Using a spreadsheet, calculate the runoff
from the storm at 5-minute intervals. Plot the resulting hydrograph.
Time (min)
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
Incremental Rainfall
Depth (in.)
0
0.1
0.18
0.29
0.6
0.64
0.51
0.3
0.17
0.07
0
0
0
0
0

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