If the net upward pressure on a square footing is $p_{0}$ width of footing is B and width of column wall is b, than maximum bending moment (m) near the column is given by

- 1
  
  $M = \frac{p_{0} B}{2} {(B - b)}^{2}$
- 2
  
  $M = \frac{p_{0} B}{4} {(B - b)}^{2}$
- 3
  
  $M = \frac{p_{0} B}{8} {(B - b)}^{2}$
- 4
  
  $M = \frac{p_{0} B}{16} {(B - b)}^{2}$

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