1. Calculate the normal depth in a concrete trapezoidal channel with side slope of 1 to 3, a bed slope of 0.00033, a bottom width of 4.0 m and a water discharge of 39 m/s. Manning coefficient is 0.013. y 1 3. 4m

Structural Analysis
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Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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Home work 1a.docx
Home work 1
1. Calculate the normal depth in a concrete trapezoidal channel with side
slope of 1 to 3, a bed slope of 0.00033, a bottom width of 4.0 m and a
water discharge of 39 m/s. Manning coefficient is 0.013.
1
4m
Example
The cross section of the river in flood stage has the dimensions shown below:
-30.5 m
30.5 m
1.52 m
1.52 m
Estimate the total discharge if Manning's n= 0.05 for the overbank, and 0.03 for the main channel,
and the channel slope is 0.00167. Also, what is the mean velocity for each section?
II
Transcribed Image Text:11:01 Home work 1a.docx Home work 1 1. Calculate the normal depth in a concrete trapezoidal channel with side slope of 1 to 3, a bed slope of 0.00033, a bottom width of 4.0 m and a water discharge of 39 m/s. Manning coefficient is 0.013. 1 4m Example The cross section of the river in flood stage has the dimensions shown below: -30.5 m 30.5 m 1.52 m 1.52 m Estimate the total discharge if Manning's n= 0.05 for the overbank, and 0.03 for the main channel, and the channel slope is 0.00167. Also, what is the mean velocity for each section? II
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