The ultimate bearing capacity per unit area of a soil for general shear failure is

[c= Cohesion value, r= Radius of footing, B= Width of footing, Df= Depth of foundation, γ= Density of soil, and Nc , Nq, Nγ= Bearing capacity factors]

- 1
  
  0.5 γ BNγ + γ DfNq
- 2
  
  c Nc+0.5 γ BNγ + γ DfNq
- 3
  
  1.3 c Nc+γ Df Nq+0.6 γ.r.Nγ
- 4
  
  1.3 c Nc+γ Df Nq+0.4 γ BNγ

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