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Q1. (a) Water flows uniformly in a 2.50 m width rectangular channel with a normal depth of 1.80 m, a unit discharge of 3.19 m³/s.m and its specific energy of 1.96 m. At a certain section, a smooth hump with a flat top and height of 0.60 m is proposed to be built. Calculate the critical weir height to determine whether the structure controls the flow.

Q1. (a) Water flows uniformly in a 2.50 m width rectangular channel with a normal depth of 1.80 m, a unit discharge of 3.19 m³/s.m and its specific energy of 1.96 m. At a certain section, a smooth hump with a flat top and height of 0.60 m is proposed to be built. Calculate the critical weir height to determine whether the structure controls the flow.

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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Q1. (a) Water flows uniformly in a 2.50 m width rectangular channel with a normal depth of 1.80 m, a unit discharge of 3.19 m³/s.m and its specific energy of 1.96 m. At a certain section, a smooth hump with a flat top and height of 0.60 m is proposed to be built. Calculate the critical weir height to determine whether the structure controls the flow. (b) A rectangular channel of 3.30 m width conveys water with a discharge of 11.62 m³/s at a normal flow depth of 2.20 m. The Manning's n is 0.015 and the channel bed slope is 0.0008. The channel is to be constricted at one section. If the flow depth at just upstream of the constriction is allowed to rise 0.45 m higher than the normal flow depth, determine the channel width at the constriction section.
Transcribed Image Text:Q1. (a) Water flows uniformly in a 2.50 m width rectangular channel with a normal depth of 1.80 m, a unit discharge of 3.19 m³/s.m and its specific energy of 1.96 m. At a certain section, a smooth hump with a flat top and height of 0.60 m is proposed to be built. Calculate the critical weir height to determine whether the structure controls the flow. (b) A rectangular channel of 3.30 m width conveys water with a discharge of 11.62 m³/s at a normal flow depth of 2.20 m. The Manning's n is 0.015 and the channel bed slope is 0.0008. The channel is to be constricted at one section. If the flow depth at just upstream of the constriction is allowed to rise 0.45 m higher than the normal flow depth, determine the channel width at the constriction section.
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