In an eccentrically loaded footing, if eccentricity e = width (B)/6, then the minimum stress below the footing (q min) is
- A0 kPaCorrect
- B< 0 kPa
- C> 0 kPa
- DNone of these
Solution
Concept
Middle third rule
Formula
q = (Q/BL)(1 ± 6e/B)
Step-by-step solution
1. At e = B/6, qmin = (Q/BL)(1 − 1) = 0.
Explanation
The stress at the far edge becomes zero.
Why the other options are wrong
For e > B/6 it is negative.
Shortcut
e = B/6 → qmin = 0.
Correct answer: A) 0 kPa