A column footing of 1.8 mx 1.8 m is to be placed 1.5 m below ground level in a dry cohesionless soil. The unit weight of soil is 21 kN/m³ and angle of internal friction, $=36°. The footing is to carry total load 1350 KN including column load, weight of footing and weight of soil surcharge. Determine the factor of safety against bearing capacity failure assuming: (1) Ground water level well below the base of footing, and (ii) Ground water level at ground level Given for = 36°, N= 63.53, N=47.16, N₂=51.7 [Assume, Ybulk Ysaturated = 21 kN/m³] =

Principles of Geotechnical Engineering (MindTap Course List)
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Author:Braja M. Das, Khaled Sobhan
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Chapter16: Soil Bearing Capacity For Shallow Foundations
Section: Chapter Questions
Problem 16.13P: A square footing (B B) must carry a gross allowable load of 1160 kN. The base of the footing is to...
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A column footing of 1.8 mx 1.8 m is to be placed 1.5 m below ground level in a dry cohesionless soil.
The unit weight of soil is 21 kN/m³ and angle of internal friction, $=36°. The footing is to carry total
load 1350 KN including column load, weight of footing and weight of soil surcharge. Determine the
factor of safety against bearing capacity failure assuming:
(1) Ground water level well below the base of footing, and
(ii) Ground water level at ground level
Given for = 36°, N= 63.53, N=47.16, N₂=51.7
= 21 kN/m³]
[Assume, Ybulk Ysaturated
=
Transcribed Image Text:A column footing of 1.8 mx 1.8 m is to be placed 1.5 m below ground level in a dry cohesionless soil. The unit weight of soil is 21 kN/m³ and angle of internal friction, $=36°. The footing is to carry total load 1350 KN including column load, weight of footing and weight of soil surcharge. Determine the factor of safety against bearing capacity failure assuming: (1) Ground water level well below the base of footing, and (ii) Ground water level at ground level Given for = 36°, N= 63.53, N=47.16, N₂=51.7 = 21 kN/m³] [Assume, Ybulk Ysaturated =
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