Water flows in a 5-ft-wide rectangular channel with a flowrate of Q = 30 ft³/s and an upstream depth of y1 = 2.5 ft as shown in the figure below. Determine (a) the flow depth and (b) the surface elevation at section (2). Assume h2 = 0.2 ft. Va (2) (1) Concepts Bernoulli's equation applies along a streamline to frictionless flow Volume flowrate is constant for steady, incompressible flow There are two possible depths when the flow area changes in an open channel The Froude number indicates whether the flow is subcritical, critical, or supercritical (a) What is the velocity at section 1? i ft/s (b) What is the total energy of the flow at section 1, with the elevation of the bottom of the channel at section 1 as reference? ft (c) What is the Froude number of the flow at section 1? i

Water flows in a 5-ft-wide rectangular channel with a flowrate of Q = 30 ft³/s and an upstream depth of y1 = 2.5 ft as shown in the figure below. Determine (a) the flow depth and (b) the surface elevation at section (2). Assume h2 = 0.2 ft. Va (2) (1) Concepts Bernoulli's equation applies along a streamline to frictionless flow Volume flowrate is constant for steady, incompressible flow There are two possible depths when the flow area changes in an open channel The Froude number indicates whether the flow is subcritical, critical, or supercritical (a) What is the velocity at section 1? i ft/s (b) What is the total energy of the flow at section 1, with the elevation of the bottom of the channel at section 1 as reference? ft (c) What is the Froude number of the flow at section 1? i

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

Part 1
Water flows in a 5-ft-wide rectangular channel with a flowrate of Q = 30 ft/s and an upstream depth of y1 = 2.5 ft as shown in the
figure below. Determine (a) the flow depth and (b) the surface elevation at section (2).
Assume h2 = 0.2 ft.
h,
(2)
(1)
Concepts
Bernoulli's equation applies along a streamline to frictionless flow
Volume flowrate is constant for steady, incompressible flow
There are two possible depths when the flow area changes in an open channel
The Froude number indicates whether the flow is subcritical, critical, or supercritical
(a) What is the velocity at section 1?
i
ft/s
(b) What is the total energy of the flow at section 1, with the elevation of the bottom of the channel at section 1 as reference?
ft
(c) What is the Froude number of the flow at section 1? i
(d) Is the flow at section 1 subcritical, critical, or supercritical?

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