The hydraulic radius of a sewer refers to which of the following?
A)The diameter
B)Channel perimeter
C)One-half the diameter
D)The ratio of the cross-sectional area of flow to the wetted perimeter

Question

Quizplus · Accepted Answer

The hydraulic radius of a sewer refers to the ratio of the cross-sectional area of flow to the wetted perimeter. (The wetted perimeter is the portion of a cross-section's perimeter that is "wet.") The equation that describes the hydraulic radius of a channel, Rh, is expressed as follows:
Rh = A (cross sectional area of flow) / P (wetted perimeter)

The Hydraulic Radius of a Sewer Refers to Which of the Following