Question

To avoid __________ the foundations should be taken beyond the depth up to which rain water can not reach.

(a) Unequal settlement of the soil

(b) Horizontal movement of the earth

(c) Atmospheric action

(d) Withdrawal of moisture from the sub-soil

The question was asked during an interview for a job.

My question is taken from Foundations topic in division Foundations of Construction & Building Materials

Answer 1

Correct option is (c) Atmospheric action

For explanation: Atmospheric action results in heavy rains or considerable variations in temperature or Frost action may damage the foundations. Hence the foundations are made at sufficient depth up to which rainwater cannot come in contact with it.