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The example of pre-consolidation pressure is _____________

(a) ice sheet or glacier

(b) desert soil

(c) sea soil

(d) marine soil

This question was addressed to me during a job interview.

Query is from Consolidation of Undisturbed Specimen in section One Dimensional Consolidation of Geotechnical Engineering I

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Right option is (a) ice sheet or glacier

Easy explanation: Since the pre-consolidation pressure is known as the temporary over burden pressure to which a soil has been subjected and under which it got consolidated, ice sheet or glacier is an example of it. This is because the glaciers put a lot load on the soil before its melt.

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