Question

The vertical stress distribution diagram on a horizontal plane due to a concentrated load is known as the influence diagram if the load is ______

(a) zero

(b) unity

(c) two units

(d) three units

I had been asked this question at a job interview.

I would like to ask this question from Stress Distribution in portion Stress Distribution of Geotechnical Engineering I

Answer 1

Right option is (b) unity

The explanation: The influence diagram is a representation of vertical stress distribution diagram on a horizontal plane due to a concentrated load, at a depth z when it is plotted for a unit load Q=1.