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In passive state, the major principal stress σ1 ____________

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+1 vote
in Geotechnical Engineering II by (93.8k points)
In passive state, the major principal stress σ1 ____________

(a) horizontal direction

(b) vertical direction

(c) can be both vertical and horizontal direction

(d) in no direction

I got this question in an online interview.

Asked question is from Earth Pressure Introduction in section Failure Envelopes & Earth Pressure of Geotechnical Engineering II

1 Answer

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by (243k points)
The correct choice is (a) horizontal direction

To explain: In passive state, the minor principal stress denoted by σ3  is in vertical direction. While in the passive state, the major principal stress σ1 is in horizontal direction.

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