Question

Stone columns are invariably used in which soil.

(a) Poor bearing capacity

(b) Strong bearing capacity

(c) Low bearing capacity

(d) Very poor bearing capacity

I got this question during an interview.

I need to ask this question from Ground Techniques in division Site Investigation and Ground Techniques of Construction & Building Materials

Answer 1

Right option is (a) Poor bearing capacity

Easy explanation: It is normally used in soft inorganic soils. Stone columns are essentially a method of soil reinforcement in which soft cohesive soil is replaced at discrete points by compacted stone or crushed rock in pre bored vertical hole to form columns or files within the soil.