When used in design of an open channel, which of the following natural materials has the highest permissible velocity? Group of answer choices a) Poor rock (soft shale) b) Fine gravel c) Bermuda grass on silty clay d) Bermuda grass on sandy silt

When used in design of an open channel, which of the following natural materials has the highest permissible velocity? Group of answer choices a) Poor rock (soft shale) b) Fine gravel c) Bermuda grass on silty clay d) Bermuda grass on sandy silt

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter3: Weight-volume Relationships And Plasticity

Section: Chapter Questions

Problem 3.14P

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Concept explainers

Open Channel Flow

Open channel flow is a branch of fluid mechanics. It deals with the flow of fluid in an open conduit or free surface. In an open channel flow, gravity induces the flow of water whose surface is open to the air. This flow is free-falling rather than confined in rigid body conduits. The open channel flow depends upon two parameters that are the cross-section of the conduit and the velocity profile. Practical examples of open channel flow are streams, rivers, canals, and other drainage systems.In open channel flow, the cross-sectional area of at least one of the sides is exposed to air, and the surface of water faces atmospheric pressure. This flow is also known as free gravity flow. The cross-sectional area of the conduit can be either man-made or a natural channel. For instance, the flow in rivers and streams are natural conduits, and the flow in a canal and sanitary systems are man-made or engineered channels.

Question

When used in design of an open channel, which of the following natural materials has the highest permissible velocity?

Group of answer choices

a) Poor rock (soft shale)

b) Fine gravel

c) Bermuda grass on silty clay

d) Bermuda grass on sandy silt

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