Question

Assertion (A): Estimation of settlement of foundations on sandy soils can be done by using SPT values.
Reason (R): Sampling in cohesionless soils without disturbing the structure is difficult.

• A. both A and R are true and R is the correct explanation of A
• B. both A and R are true but R is not a correct explanation of A
• C. A is true but R is false
• D. A is false but R is true

Answer 1

The correct option is B both A and R are true but R is not a correct explanation of A

Sampling in cohensionless soils without disturbing the structure is difficult because there is no cohesion to keep individual grains together and grains may read just among themselves due to slight impacts also while extracting.