Construction & Materials
Terzaghi Bearing Capacity Calculator
Estimate the ultimate bearing capacity of a strip footing using Terzaghi's equation.
Your inputs
Change any value to update the result instantly.
Ultimate bearing capacity
508.6083 kPa
Bearing capacity factor Nc
20.72
Bearing capacity factor Nq
10.66
Bearing capacity factor Nγ
8.11
Allowable bearing (FS=3)
169.5 kPa
Formula and working
qu = c·Nc + q·Nq + 0.5·γ·B·Nγ
- 1
Collect the inputs
Soil cohesion c = 10 kPa; Friction angle φ = 25 °; Soil unit weight γ = 18 kN/m³; Footing depth Df = 1 m; Footing width B = 1.5 m
- 2
Apply the formula
qu = c·Nc + q·Nq + 0.5·γ·B·Nγ
- 3
Result
Ultimate bearing capacity = 508.6083 kPa
Frequently asked questions
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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