A trapezoidal channel is 6.0m wide and has side slope of 0.5 H:I V. If the bed slope of the channel is 0.0004 and the Manning's n=0.02, find the discharge which can make the channel a hydraulically efficient section.

A trapezoidal channel is 6.0m wide and has side slope of 0.5 H:I V. If the bed slope of the channel is 0.0004 and the Manning's n=0.02, find the discharge which can make the channel a hydraulically efficient section.

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

B¸ = 2y.(√1+m² − m)
-
e
A₂ =(B₂+my) ye
R₁ = Ye
2
9
› B = Channel width of bottom › A₂ = Area

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Step 1: Given:-

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Step 2: Depth of flow:-

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Step 3: Hydraulic radius:-

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Step 4: Area of section:-

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Step 5: Discharge calculations:-

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