Find the bed slope of trapezoidal channel of bed width 6m,depth of water 3m and side slope 3H:4V, when the discharge through the channel is $30m^3/sec$, C=70.

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Find the bed slope of trapezoidal channel of bed width 6m,depth of water 3m and side slope 3H:4V, when the discharge through the channel is

$30m^3/sec$ , C=70.

written 7.2 years ago by

mitali.poojari1908 • 400

modified 3.1 years ago by

RakeshBhuse • 3.2k

applied hydraulics

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1 Answer

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written 3.1 years ago by

RakeshBhuse • 3.2k

• modified 3.1 years ago

Solution :

Given :

enter image description here

From Fig.

$BE = 3 × \frac{3}{4}= 2.25 m$

Length of CD,

$\begin {aligned}C D &=A B+2 \times B E\\ &=6.0+2 \times 2.25 \\ &=10.50 \mathrm{~m} \end {aligned}$

Wetted perimeter,

$\begin {aligned} …

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