Question

The selection of the depth of a well is based on which of the following criteria?

(a) Adequate embedded length should be provided and The well should rest on strata of adequate bearing capacity

(b) The perimeter of the well should be minimum

(c) None of the mentioned

(d) All of the mentioned

This question was addressed to me during an online interview.

This intriguing question originated from Analysis of Well Foundation in division Well Foundations of Geotechnical Engineering II

Answer 1

Right choice is (a) Adequate embedded length should be provided and The well should rest on strata of adequate bearing capacity

The best I can explain: The selection of the depth of a well is based on the following two criteria:

i) There should be the adequate embedded length of well, called the grip length below the lowest scour level.

ii) The well should be taken deep enough to rest on strata of adequate bearing capacity in relation to the load transmitted.