Question

A body is said to be in plastic equilibrium, if every point of it is ________

(a) in the verge of failure

(b) in equilibrium

(c) in stable state

(d) elastic state

This question was posed to me in quiz.

I'd like to ask this question from Earth Pressure Introduction in portion Failure Envelopes & Earth Pressure of Geotechnical Engineering II

Answer 1

Right option is (a) in the verge of failure

The explanation is: A body is said to be in plastic equilibrium, if every point of it is in the verge of failure. The transition from the state of plastic equilibrium to the state of plastic flow represents the failure of the soil mass.