3- A rectangular channel has a width of 5 m, carriers a discharge of 24 m³/s with a depth of 3.2 m in Section 1. At a certain distance downstream (Section 2), flow experiences a smooth and gradual contraction to a width of 3.5 m and a bed raise of 0.5 m. Note: The energy loss is negligible. a) Calculate the flow depth in Section 2 without considering the bridge piers (v2) b) Calculate the flow depth in Section 2 with considering the minimum channel width (v.) Calculate the maximum diameter of the two bridge piers in Section 2 such that no backwater occurs for this discharge c) B₁ Top View B₂ Y₁ Side View Y/₂ 4z

3- A rectangular channel has a width of 5 m, carriers a discharge of 24 m³/s with a depth of 3.2 m in Section 1. At a certain distance downstream (Section 2), flow experiences a smooth and gradual contraction to a width of 3.5 m and a bed raise of 0.5 m. Note: The energy loss is negligible. a) Calculate the flow depth in Section 2 without considering the bridge piers (v2) b) Calculate the flow depth in Section 2 with considering the minimum channel width (v.) Calculate the maximum diameter of the two bridge piers in Section 2 such that no backwater occurs for this discharge c) B₁ Top View B₂ Y₁ Side View Y/₂ 4z

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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Question

3- A rectangular channel has a width of 5 m, carriers a discharge of 24 m³/s with a depth of 3.2 m in
Section 1. At a certain distance downstream (Section 2), flow experiences a smooth and gradual
contraction to a width of 3.5 m and a bed raise of 0.5 m.
Note: The energy loss is negligible.
a) Calculate the flow depth in Section 2 without considering the bridge piers (v2)
b) Calculate the flow depth in Section 2 with considering the minimum channel width (v.)
c) Calculate the maximum diameter of the two bridge piers in Section 2 such that no backwater
occurs for this discharge
0
B₁
Top View
B₂
Yı
Side View
1/2
4z

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Step 3: Calculating the flow depth in Section 2 with considering the minimum channel width

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