5.

The ditch below is-

A.

Symmetrical trapezoidal

B.

Segmental.

C.

Nonsymmetrical triangular.

D.

Nonsymmetrical trapezoidal.

6.

You are designing a ditch in SMd soil. Use table 4-1 on page 4-4 to find the maximum velocity.

A.

3

B.

4

C.

5

D.

6

7.

You have determined that the above ditch has a Q of 10 cfs. It will be constructed in Gc soil and has a

slope of 0.005 ft/ft. Use table 4-1 to determine the velocity and figure 4-5, page 4-17 to determine the hydraulic

radius.

A.

V = 6.0 R = 1.7

B.

V = 3.0 R = 2.5

C.

V = 2.0 R = .25

D.

V = 4.0 R = 1.1