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i) Determine the critical depth of flow for this channel. ii) Determine the normal depth of flow for before and after the change in slope. iii) Is the flow subcritical or supercritical before the change in slope? iv) What type of water surface profile would you expect between the upstream and downstream slope.

i) Determine the critical depth of flow for this channel. ii) Determine the normal depth of flow for before and after the change in slope. iii) Is the flow subcritical or supercritical before the change in slope? iv) What type of water surface profile would you expect between the upstream and downstream slope.

Structural Analysis
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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b) A rectangular channel conveys a discharge of 150 m/s. The channel has a slope, s = 0.0520, base width, b 6.0 m and Manning coefficient, n = 0.015. At a certain point, as shown in Figure 2 below, the slope changes suddenly to s2 = 0.00560 while base width and manning coefficient remaining unchanged. S, = 0.0520 S, = 0.00560 Figure 2 - Question 2 (b) i) Determine the critical depth of flow for this channel. ii) Determine the normal depth of flow for before and after the change in slope. iii) Is the flow subcritical or supercritical before the change in slope? iv) What type of water surface profile would you expect between the upstream and downstream slope.
Transcribed Image Text:b) A rectangular channel conveys a discharge of 150 m/s. The channel has a slope, s = 0.0520, base width, b 6.0 m and Manning coefficient, n = 0.015. At a certain point, as shown in Figure 2 below, the slope changes suddenly to s2 = 0.00560 while base width and manning coefficient remaining unchanged. S, = 0.0520 S, = 0.00560 Figure 2 - Question 2 (b) i) Determine the critical depth of flow for this channel. ii) Determine the normal depth of flow for before and after the change in slope. iii) Is the flow subcritical or supercritical before the change in slope? iv) What type of water surface profile would you expect between the upstream and downstream slope.
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