Question

In raft footing, if the C.G of the load coincide with the centroid of the raft, the upward load is considered as ___________

(a) Non uniform pressure

(b) Uniform pressure

(c) Excess pressure

(d) None of the mentioned

I got this question in an interview for internship.

Question is taken from Shallow Foundations in division Shallow Foundations of Geotechnical Engineering II

Answer 1

Right answer is (b) Uniform pressure

The explanation is: If the Center of gravity of the load coincides with the centroid of the raft, the upward load is regarded as a uniform pressure, which will be equal to the downward load divided by the area of the raft.