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The zone of soil in isobar is called __________

(a) stress diagram

(b) contour

(c) pressure bulb

(d) isotherm

This question was posed to me during an interview.

This interesting question is from Stress Distribution topic in portion Stress Distribution of Geotechnical Engineering I

1 Answer

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Best answer
Right choice is (c) pressure bulb

Explanation: The zone in a loaded soil mass bounded by an isobar of given vertical pressure intensity is called pressure bulb. In any point inside the pressure bulb, the vertical pressure in a horizontal plane is same.

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