The cross section through a concrete dam spillway, including a cut-off sheet pile wall and the completed flow net, is given (next page). (A) Report the exact number of flow lines, flow channels, equipotential lines, and pressure head drops through the permeable soil medium. (B) Compute the amount of flow under the dam spillway, per meter of dam, if the coefficient of permeability of the permeable soil medium is found to be 8.5 x 104 cm/sec. (Show all pertinent formulas and calculations.) (C) Determine how high the water level will rise if piezometers were to be placed at the left and right corners of the spillway base, as well as the other four points where an equipotential line “orthogonally" intersects the base. The labeling (or numbering) of these points is left to your discretion. 99

The cross section through a concrete dam spillway, including a cut-off sheet pile wall and the completed flow net, is given (next page). (A) Report the exact number of flow lines, flow channels, equipotential lines, and pressure head drops through the permeable soil medium. (B) Compute the amount of flow under the dam spillway, per meter of dam, if the coefficient of permeability of the permeable soil medium is found to be 8.5 x 104 cm/sec. (Show all pertinent formulas and calculations.) (C) Determine how high the water level will rise if piezometers were to be placed at the left and right corners of the spillway base, as well as the other four points where an equipotential line “orthogonally" intersects the base. The labeling (or numbering) of these points is left to your discretion. 99

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

The cross section through a concrete dam spillway, including a cut-off sheet pile wall
and the completed flow net, is given (next page).
(A) Report the exact number of flow lines, flow channels, equipotential lines, and
pressure head drops through the permeable soil medium.
(B) Compute the amount of flow under the dam spillway, per meter of dam, if the
coefficient of permeability of the permeable soil medium is found to be 8.5 x 104
cm/sec. (Show all pertinent formulas and calculations.)
(C) Determine how high the water level will rise if piezometers were to be placed at the
left and right corners of the spillway base, as well as the other four points where an
equipotential line “orthogonally" intersects the base. The labeling (or numbering)
of these points is left to your discretion.
99

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