Exercise [21 For a given basin, the following are the infiltration capacity rates at various time intervals after the beginning of the storm. Make a plot of the f-curve and establish an equation of the form developed by Horton. Also, determine the total rain and the excess rain (runoff). Time Precipitation rate Infiltration capacity (min) (cm/hr) (cm/hr) 1 5.0 3.9 5.0 3.4 3 5.0 5.0 5.0 7.5 7.5 3.1 4 2.7 2.5 2.3 2.0 6. 10 7.5 1.8 12 7.5 1.54 7.5 1.43 1.36 14 16 2.5 18 2.5 1.31 20 2.5 1.28 22 2.5 1.25

Structural Analysis
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Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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Exercise [21
For a given basin, the following are the infiltration capacity rates at
various time intervals after the beginning of the storm. Make a plot of
the f-curve and establish an equation of the form developed by
Horton. Also, determine the total rain and the excess rain (runoff).
Time Precipitation rate Infiltration capacity
(cm/hr)
3.9
(min)
(cm/hr)
1
5.0
2
5.0
3.4
3
5.0
3.1
4
5.0
2.7
2.5
2.3
5.0
6.
7.5
7.5
7.5
2.0
10
1.8
7.5
7.5
2.5
2.5
2.5
12
1.54
14
1.43
16
1.36
18
1.31
20
1.28
22
2.5
1.25
Irigation Engineering
Assignment No.1)
Time Precipitation rate Infiltration capacity
(cm/hr)
1.23
1.22
1.20
(min)
(cm/hr)
24
26
28
2.5
2.5
2.5
30
2.5
1.20
Note:
Excess rain (runoff) = Total precipitation Infiltration loss.
Transcribed Image Text:Exercise [21 For a given basin, the following are the infiltration capacity rates at various time intervals after the beginning of the storm. Make a plot of the f-curve and establish an equation of the form developed by Horton. Also, determine the total rain and the excess rain (runoff). Time Precipitation rate Infiltration capacity (cm/hr) 3.9 (min) (cm/hr) 1 5.0 2 5.0 3.4 3 5.0 3.1 4 5.0 2.7 2.5 2.3 5.0 6. 7.5 7.5 7.5 2.0 10 1.8 7.5 7.5 2.5 2.5 2.5 12 1.54 14 1.43 16 1.36 18 1.31 20 1.28 22 2.5 1.25 Irigation Engineering Assignment No.1) Time Precipitation rate Infiltration capacity (cm/hr) 1.23 1.22 1.20 (min) (cm/hr) 24 26 28 2.5 2.5 2.5 30 2.5 1.20 Note: Excess rain (runoff) = Total precipitation Infiltration loss.
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