6) Water is flowing at a velocity of 4 m/s and depth of 5 m in a channel of rectangular section of 4 m wide. a) At downstream if there is a smooth expansion in width to 5 m; determine the depth in the expanded section. b) Find the maximum allowable contraction in the width without any choking. c) If the width is contracted to 3 m, what is the minimum amount by which the bed must be lowered for the upstream flow to be possible as specified? u-4 m/s b-4 m by-5 m > Y? m y-S m

Structural Analysis
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Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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6) Water is flowing at a velocity of 4 m/s and depth of 5 m in a channel of rectangular
section of 4 m wide.
a) At downstream if there is a smooth expansion in width to 5 m; determine the
depth in the expanded section.
b) Find the maximum allowable contraction in the width without any choking.
c) If the width is contracted to 3 m, what is the minimum amount by which the bed
must be lowered for the upstream flow to be possible as specified?
u-4 m/s
b-4 m
by-5 m
Y? m
y-S m
Transcribed Image Text:6) Water is flowing at a velocity of 4 m/s and depth of 5 m in a channel of rectangular section of 4 m wide. a) At downstream if there is a smooth expansion in width to 5 m; determine the depth in the expanded section. b) Find the maximum allowable contraction in the width without any choking. c) If the width is contracted to 3 m, what is the minimum amount by which the bed must be lowered for the upstream flow to be possible as specified? u-4 m/s b-4 m by-5 m Y? m y-S m
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