Question

In: Civil Engineering

1. A soil has Horton inﬁltration parameters f0 = 110 mm/h, fc = 20 mm/h, and...

1. A soil has Horton inﬁltration parameters f0 = 110 mm/h, fc = 20 mm/h, and k = 1.8 h−1.

a. Compute the total inﬁltration and runoﬀ from a storm with an intensity of 15 mm/h and a duration of 2 hours.

b. Suppose the intensity is i = 90 mm/h. One of your group members (not you) computes the ponding time t by setting the inﬁltration capacity to the intensity and solving for t; that is, your teammate obtained t from the Horton equation. Explain why this approach is wrong.

c. Compute the total inﬁltration and runoﬀ from a storm with an intensity of 90 mm/h and a duration of 2 hours.

d. A bumbling, but observant professor, computed a total inﬁltration of about 98 mm for part d. Why did she question this result?

Expert Solution

Let's Begin,

a)

b-continued

Moreover, the Hortons equation is the integral equation before equating one must integrate the equation.

Another case:

If the i=90mm/hr is Rainfall intensity and the student tried to calculate the time using Horton's equation it is completely wrong

C)

d)

If you are referring to the part-C

She is probably wrong as I got the Infiltration capacity = 88.63mm

(If you are referring to part-d Probably please check your question and comment I will try to help you)

Ally Wells answered 9 months ago

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