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To find pre-consolidation pressure, __________ graph is used.

(a) hexagonal paper

(b) semi-log graph

(c) log-log graph

(d) normal probability paper

This question was posed to me by my school principal while I was bunking the class.

I'm obligated to ask this question of Consolidation of Undisturbed Specimen topic in section One Dimensional Consolidation of Geotechnical Engineering I

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Right answer is (b) semi-log graph

Explanation: To find pre-consolidation pressure, semi-log graph is used. In this type, the voids ratio is plotted in a linear scale and the effective pressure or the applied pressure is plotted in the logarithmic scale.

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