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In passive state of plastic equilibrium, the earth pressure on the wall ________

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in Geotechnical Engineering II by (93.8k points)
In passive state of plastic equilibrium, the earth pressure on the wall ________

(a) increases

(b) decreases

(c) is zero

(d) is constant

The question was posed to me in an interview.

Question is from Earth Pressure Introduction topic in section Failure Envelopes & Earth Pressure of Geotechnical Engineering II

1 Answer

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by (243k points)
Correct option is (a) increases

Easiest explanation: In passive state of plastic equilibrium, when the wall moves towards the fill, the earth pressure increases because the shearing resistance builds up in the direction of the wall.

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