Q3.The laboratory test on a soil sample yields the following results: natural moisture content =
18%, liquid limit = 60%, plastic limit = 25%, percentage of clay sized fraction = 25%.
The liquidity index and activity (as per the expression proposed by skempton ) of the soil,
Q4.The old concert hall was demolished because of fears that the foundation would be affected by
the construction tried to mitigate the impact of pressurized air pockets created by the excavation
of large amounts of soil. But even with these safeguards, it was feared that the soil below the
concert hall would not be stable.
From this, one can infer that
Answer : Option BExplaination / Solution: No Explaination.
Q9.A vertical cut is to be made in a soil mass having cohesion c, angle of internal friction
ϕ, and unit weight γ. Considering Ka and Kp as the coefficients of active and passive earth pressures, respectively, the maximum depth of unsupported excavation