consider the compound channel shown in Figure(1). The Manning's coefficient for the left side,main channel, the right side is 0.04, 0.016, and0.05, respectively. If the longitudinal slope for thechannel is 0.001 and the flow depth is 4mCalculate:1-The equivalent Manning's coefficient using thePavlovskii method2-The freeboard.The average shear stress along the wettedperimeter in N/m?.3-4-Is the flow supercritical or subcriticalLeft sideRight sideSide slope 1%Main channelSide slope 4%3mNot to scale-30 m

Solution : Manning's coefficient for 1. Left channel = 0.04 2. Main channel = 0.016 3. Right side =…

Answered: (1). The Manning's coefficient for the…

(1). The Manning's coefficient for the left side, main channel, the right side is 0.04, 0.016, and 0.05, respectively. If the longitudinal slope for the channel is 0.001 and the flow depth is 4m

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter7: Seepage

Section: Chapter Questions

Problem 7.1P

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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

consider the compound channel shown in Figure
(1). The Manning's coefficient for the left side,
main channel, the right side is 0.04, 0.016, and
0.05, respectively. If the longitudinal slope for the
channel is 0.001 and the flow depth is 4m
Calculate:
1-
The equivalent Manning's coefficient using the
Pavlovskii method
2-
The freeboard.
The average shear stress along the wetted
perimeter in N/m?.
3-
4-
Is the flow supercritical or subcritical
Left side
Right side
Side slope 1%
Main channel
Side slope 4%
3m
Not to scale
-30 m

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