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Geotechnical Engineering I
The vertical stress at a point within soil mass...

The vertical stress at a point within soil mass at a depth z is ____________

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+1 vote

asked Feb 8, 2022 in Geotechnical Engineering I by Sophia (102k points)

The vertical stress at a point within soil mass at a depth z is ____________

(a) σz=γ+z

(b) σz=γ-z

(c) σz=γ/z

(d) σz=γz

The question was asked in exam.

I want to ask this question from Stresses due to Self Weight topic in portion Stress Distribution of Geotechnical Engineering I

geotechnical engineering i
stress distribution
stresses due to self weight

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1 Answer

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answered Feb 9, 2022 by Oliver (727k points)
selected Sep 18, 2022 by Sophia

Best answer

Correct option is (d) σz=γz

The explanation: From the symmetry and orthogonality of principal planes, one can conclude that both horizontal and vertical planes will be devoid of shear stress.

∴ τYX= τYZ = τXZ=0.

Substituting this in the equilibrium equation,

σz=γz.

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