Structural Analysis
Structural Analysis
6th Edition
ISBN: 9781337630931
Author: KASSIMALI, Aslam.
Publisher: Cengage,
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The foundation design for the constmction of a telecommunication mast is to support a
concentric load of 800kN and to be inclined at 80° to the horizontal, a I .5mxl .5m footing is
to be placed at 2.0m below ground level as shown in Figure 2. The soil properties are;
C=70kN/m², Y=18KN/m³ , 4–30° Assume the ground water table to be deep
a). Determine the expected foundation pressure at the base of the footing due to the application
of the load.
b). Using the Meyerhof's bearing capacity equation, determine the ultimate bearing capacity of
the underlying soil.
c). Determine the factor of safety of the design, and comment on the adequacy of the design in
terms of shear failure, give recommendations should the design is not safe against shear failure
Q=800kN
80
2.0m
1.5m
Figure 2
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Transcribed Image Text:The foundation design for the constmction of a telecommunication mast is to support a concentric load of 800kN and to be inclined at 80° to the horizontal, a I .5mxl .5m footing is to be placed at 2.0m below ground level as shown in Figure 2. The soil properties are; C=70kN/m², Y=18KN/m³ , 4–30° Assume the ground water table to be deep a). Determine the expected foundation pressure at the base of the footing due to the application of the load. b). Using the Meyerhof's bearing capacity equation, determine the ultimate bearing capacity of the underlying soil. c). Determine the factor of safety of the design, and comment on the adequacy of the design in terms of shear failure, give recommendations should the design is not safe against shear failure Q=800kN 80 2.0m 1.5m Figure 2
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