Question

The influence factor for rigid square footing is ____________

(a) 0.88

(b) 0.82

(c) 1.06

(d) 1.70

I had been asked this question by my college director while I was bunking the class.

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

Answer 1

Right option is (b) 0.82

The explanation: As suggested by BIS Code IS: 8009 Part 1, 1976 the value of influence factor Iw for rigid footing is 0.82.