Question 1 Calculate the Hydraulic Radius for a trapezoidal channel that has a bottom width of...

Question 1

Calculate the Hydraulic Radius for a trapezoidal channel that has a bottom width of 4 feet, side slopes, s = 20, a Manning’s n value of 0.012, and bottom slope of 1.5%, and a depth of flow of 1 foot.

a.
0.54 ft

b.
1.3 ft

c.
2.1 ft

d.
2.9 ft

e.
3.7 ft

2 points

Question 2

A trapezoidal channel that has a bottom width of 4 feet, side slopes 2:1 (H:V) and bottom slope of 1.0%. Calculate the Froude Number for a flow of 77,000 GPM. Assume (n = 0.025).

a.
0.12

b.
0.35

c.
0.55

d.
0.77

e.
1.07

2 points

Question 3

A rough concrete (n = 0.018) rectangular channel that has a bottom width of 3.0 feet and bottom slope of 1.31%. Calculate the normal depth for a flow of 68 cfs.

a.
1.5 ft.

b.
2.0 ft.

c.
2.5 ft.

d.
3.0 ft.

e.
3.5 ft.

Expert Solution

Ally Wells answered 1 year ago

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