A 5-hours storm produces a total of 3 mm rainfall as follows: t (hr) 0-1 1-2 2-3 3-4 4-5 i (mm/hr) 0.4 1.2 0.6 0.4 0.4 Using Horton's equation with k=1.1 hr', fe= 0.2 mm/hr., and fo = 0.9 mm/hr.: I. Find the infiltration rate at t=0, 1,2,3,4, and 5 hr. (0.9,0.43,0.28,0.23,0.21,0.20 mm/hr) II. Estimate the cumulative capacity over the 5 hours storm period. (1.63 mm) III. Using Microsoft Excel, plot in one graph: the hyetograph, and the infiltration curve IV. Estimate the time when the ponding begins. (1 hr)

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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A 5-hours storm produces a total of 3 mm rainfall as follows:
t (hr)
0-1
1-2
2-3
3-4
4-5
i (mm/hr)
0.4
1.2
0.6
0.4
0.4
Using Horton's equation with k=1.1 hr', fe = 0.2 mm/hr., and fo = 0.9 mm/hr.:
I.
Find the infiltration rate at t=0, 1,2,3,4, and 5 hr. (0.9,0.43,0.28,0.23,0.21,0.20 mm/hr)
II.
Estimate the cumulative capacity over the 5 hours storm period. (1.63 mm)
III.
Using Microsoft Excel, plot in one graph: the hyetograph, and the infiltration curve
IV.
Estimate the time when the ponding begins. (1 hr)
Transcribed Image Text:A 5-hours storm produces a total of 3 mm rainfall as follows: t (hr) 0-1 1-2 2-3 3-4 4-5 i (mm/hr) 0.4 1.2 0.6 0.4 0.4 Using Horton's equation with k=1.1 hr', fe = 0.2 mm/hr., and fo = 0.9 mm/hr.: I. Find the infiltration rate at t=0, 1,2,3,4, and 5 hr. (0.9,0.43,0.28,0.23,0.21,0.20 mm/hr) II. Estimate the cumulative capacity over the 5 hours storm period. (1.63 mm) III. Using Microsoft Excel, plot in one graph: the hyetograph, and the infiltration curve IV. Estimate the time when the ponding begins. (1 hr)
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