Question

According to Terzaghi and Peck, the ultimate bearing capacity can be determined by which of the following expression?

(a) Q f = Q p + 2πRfs Df

(b) Q p = πR2(Q p + 2πRfs Df)

(c) Q p = 2πRfs Df

(d) All of the mentioned

This question was posed to me in examination.

Question is from Analysis of Well Foundation in section Well Foundations of Geotechnical Engineering II

Answer 1

The correct option is (a) Q f = Q p + 2πRfs Df

For explanation: According to Terzaghi and Peck, the ultimate bearing capacity can be determined from the following expression:

Q f = Q p + 2 π R fs Df

Where R = radius of well, Df = depth of well, fs = average skin friction.