Determine the normal depth (y0) and critical depth (yc) in a trapezoidal channel with a discharge of 3,000 cfs that has a bottom width of 40 ft, side slopes of 3:1 (m = 3), Manning n equals 0.025, and a bed slope of 0.002 ft/ft. Is the channel slope mild or steep?

Determine the normal depth (y0) and critical depth (yc) in a trapezoidal channel with a discharge of 3,000 cfs that has a bottom width of 40 ft, side slopes of 3:1 (m = 3), Manning n equals 0.025, and a bed slope of 0.002 ft/ft. Is the channel slope mild or steep?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Highway Drainage

Highway drainage is the process of extracting and regulating the excess surface water on the pavement by giving the desired slope. The construction of a highway drain helps to divert the water present on the surface, and sub-grade by the means of slope. Highway drainage systems are a necessary part of smooth functioning of traffic, since the highway drainage systems provide proper disposal of unwanted substances from the highways.

Question

Determine the normal depth (y0) and critical depth (yc) in a trapezoidal
channel with a discharge of 3,000 cfs that has a bottom width of 40 ft, side
slopes of 3:1 (m = 3), Manning n equals 0.025, and a bed slope of 0.002 ft/ft.
Is the channel slope mild or steep?
Z
-40ft
ft

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