UPSC Civil Service Exam Questions - Engineering

Q1:

For a partially saturated soil, Δu the increase in pore water pressure, when no drainage is permitted, is expressed as (where A and B are Skempton's pore pressure parameters and Δσ1 and Δσ3 are major and minor principal stress increments)

A Δu = B[Δσ3 + A(Δσ1 - Δσ3)]

B Δu = A[Δσ3 + B(Δσ1 - Δσ3)]

C Δu = Δσ3 + A(Δσ1 - Δσ3)]

D Δu = Δσ3 + B(Δσ1 - Δσ3)]

ANS:A - Δu = B[Δσ3 + A(Δσ1 - Δσ3)]

No answer description is available.