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UPSC Civil Service Exam Questions - Engineering

Q1:

Cohesion is 15 kN/m2, the unit weight of soil is 20 kN/m3, the factor of safety is 1.5 and stability number is 0.05; the safe maximum height of the slope is

A 5.0 m

B 8.0 m

C 10.0 m

D 12.0 m

ANS:C - 10.0 m

H = C/F * GAMMA * Sn = 15/1.5 * 20 *.05 = 10m.