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The vertical stress increments under a point load on soil surface at depth ‘z’ directly along the load axis as per Boussinesq equation is proportional to:

A1 / z
B1 / z²
C1 / z³
D1 / sqrt(z)

Explanation

Boussinesq formula directly under point load Q (r=0) is sigma_z = (3 Q / (2 pi)) * (1 / z²). Thus vertical stress is inversely proportional to z².

Submitted by: mcqstutor Team More Civil Engineering MCQs →

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