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In active state, the major principal stress σ1 is ____________

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+1 vote
in Geotechnical Engineering II by (93.7k points)
In active state, the major principal stress σ1  is ____________

(a) horizontal direction

(b) vertical direction

(c) can be both vertical and horizontal direction

(d) in no direction

This question was addressed to me in homework.

Origin of the question is Earth Pressure Introduction topic in section Failure Envelopes & Earth Pressure of Geotechnical Engineering II

1 Answer

0 votes
by (243k points)
Correct answer is (b) vertical direction

The best explanation: In active state, the major principal stress denoted by σ1  is in vertical direction. While in the passive state, the major principal stress σ1  is in horizontal direction.

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