Question

The net ultimate bearing capacity for raft may be determined by __________

(a) Skempton’s equation and Terzaghi’s equation

(b) Darcy’s equation

(c) None of the mentioned

(d) All of the mentioned

The question was asked in an online interview.

My doubt is from Shallow Foundations in section Shallow Foundations of Geotechnical Engineering II

Answer 1

The correct option is (a) Skempton’s equation and Terzaghi’s equation

To elaborate: The net ultimate bearing capacity may be determined from both Skempton and Terzaghi’s equation as given below:

i) Skempton’s equation: q nf = 5 [1 + 0.2D/B ] [1 + 0.2B/L]c

ii) Terzaghi’s equation: q nf = 5.7[ 1 + 0.3B/L]c.