(a) A uniform flow of 300 cfs occurs at a depth of 5 ft in a long rectangular channel 10 ft wide. Compute the minimum height of a flat-top hump that can be built on the floor of the channel in order to produce a critical depth. What will result (upstream and downstream) if the hump is lower or higher than the computed minimum height? (b) If the critical depth in Q# 2a is produced by a contraction of the channel, what will be the minimum contracted width? (c) A hydraulic jump is formed just downstream of a sluice gate located at the entrance of a channel. There is a constant-level lake upstream of the sluice gate. The flow depth and velocity in the channel downstream of the jump are 5.2 ft and 4.3 ft/sec, respectively. What is the lake level? Assume the losses for flow through the sluice gate is negligible.

(a) A uniform flow of 300 cfs occurs at a depth of 5 ft in a long rectangular channel 10 ft wide. Compute the minimum height of a flat-top hump that can be built on the floor of the channel in order to produce a critical depth. What will result (upstream and downstream) if the hump is lower or higher than the computed minimum height? (b) If the critical depth in Q# 2a is produced by a contraction of the channel, what will be the minimum contracted width? (c) A hydraulic jump is formed just downstream of a sluice gate located at the entrance of a channel. There is a constant-level lake upstream of the sluice gate. The flow depth and velocity in the channel downstream of the jump are 5.2 ft and 4.3 ft/sec, respectively. What is the lake level? Assume the losses for flow through the sluice gate is negligible.

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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