Question

For piers and abutment, the minimum depth of embedment below the scour level should be taken as _________ m.

(a) 2.0

(b) 1.2

(c) 3

(d) 1.5

The question was posed to me in an online interview.

This interesting question is from Analysis of Well Foundation in section Well Foundations of Geotechnical Engineering II

Answer 1

Correct answer is (a) 2.0

Explanation: According to IRC code, it is recommended that the minimum depth of embankment below the scour level should not be less than 2.0 m for piers and abutment with arches and 1.2 m for other types of structures.