1- A uniform flow passes through a rectangular channel having a width of 4 m. The channel carriers a discharge of 12 m³/s with a depth of 2.4 m at Section 1. The bed elevation was raised by 30 cm in Section 2. The velocity distribution changes due to the bed roughness in Section 2 and it is expressed by a linear equation in form of v2 = ky2. Using energy losses equal to 10% of the velocity head at Section 2: a) Write the energy equation with all details b) Calculate the flow depth at Section 2 c) Calculate Fr2 d) Calculate Emin e) Calculate Azmax at Side veiw v₂=ky₂ 3/₂ Az

1- A uniform flow passes through a rectangular channel having a width of 4 m. The channel carriers a discharge of 12 m³/s with a depth of 2.4 m at Section 1. The bed elevation was raised by 30 cm in Section 2. The velocity distribution changes due to the bed roughness in Section 2 and it is expressed by a linear equation in form of v2 = ky2. Using energy losses equal to 10% of the velocity head at Section 2: a) Write the energy equation with all details b) Calculate the flow depth at Section 2 c) Calculate Fr2 d) Calculate Emin e) Calculate Azmax at Side veiw v₂=ky₂ 3/₂ Az

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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Concept explainers

Highway Drainage

Highway drainage is the process of extracting and regulating the excess surface water on the pavement by giving the desired slope. The construction of a highway drain helps to divert the water present on the surface, and sub-grade by the means of slope. Highway drainage systems are a necessary part of smooth functioning of traffic, since the highway drainage systems provide proper disposal of unwanted substances from the highways.

Question

1- A uniform flow passes through a rectangular channel having a width of 4 m. The channel carriers a
discharge of 12 m³/s with a depth of 2.4 m at Section 1. The bed elevation was raised by 30 cm in Section
2. The velocity distribution changes due to the bed roughness in Section 2 and it is expressed by a linear
equation in form of v2= ky2. Using energy losses equal to 10% of the velocity head at Section 2:
a) Write the energy equation with all details
b) Calculate the flow depth at Section 2
c) Calculate Fr
d) Calculate Emin
e) Calculate Azmax
Q
Note: Consider energy losses and velocity distribution in all calculations.
Y₁
Side veiw
2
v=2
V₂
R

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Step 1: Introduce the problem statement

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Step 2: Formulate energy equation

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Step 3: Determine flow depth at section-2

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Step 4: Determine Froude number at section-2

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Step 5: Determine minimum specific energy (Emin)

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Step 6: Determine max hump (z)

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