Answered: A masonry dam (sp.gr. = 2.4) of…

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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A masonry dam (sp.gr. = 2.4) of trapezoidal cross-section is 20 m high. It has a thickness of 2 m at the top and 14 m at the bottomas shown in the figure.Coef. of friction under the foundation is 0.80 and assuming there is hydrostatic upliftthat varies linearly from one-half the hydrostatic head at the upstream edgeof the dam to zero at the downstream edge.Determine

2. A masonry dam (sp.gr. = 2.4) of trapezoidal cross-section is 20 m high. It has a
thickness of 2 m at the top and 14 m at the bottom as shown in the figure. Coef.
of friction under the foundation is 0.80 and assuming there is hydrostatic uplift
that varies linearly from one-half the hydrostatic head at the upstream edge of
the dam to zero at the downstream edge. Determine
a) all forces acting on the dam;
b) the intersection of the resultant
pressure with the base;
c) the intensity of pressure at the heel
and at the toe
d) the factor of safety against sliding
and overturning;
e) if the dam is safe.
20m
10 m
2m
2 m

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