A trapezoidal channel with 3 meters bottom width, side slope 2H:1V, channel gradient of 0.002, and n = 0.025, carries a discharge of 200 m3 /min. Compute the normal depth and velocity.Given dataWbottom (b)= 3 metersSlope= 2:1S= 0.002n= 0.025Q= 200 m3 /min= 3. 33 m3 /secNormal depth=?Velocity=? Formula below: A = (b + mh)hP = b + 2h/1 +m²1Q = - AR²/3n

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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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A trapezoidal channel with 3 meters bottom width, side slope 2H:1V, channel gradient of 0.002, and n = 0.025, carries a discharge of 200 m³ /min. Compute the normal depth and velocity.

Given data

W_bottom(b)= 3 meters

Slope= 2:1

S= 0.002

n= 0.025

Q= 200 m³/min= 3. 33 m³/sec

Normal depth=?

Velocity=?

Formula below:

A = (b + mh)h
P = b + 2h/1 +m²
1
Q = - AR²/3
n

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