Bearing Capacity Calculator

Computes q_ult = c*Nc + q*Nq + 0.5*gamma*B*Ngamma with q = gamma*Df. Friction angle drives Nc, Nq, Ngamma through textbook correlations. Shape, depth, and inclination factors, groundwater, layered soils, and settlement are not modeled. Output is not a substitute for geotechnical investigation or design standards.

Free · No limits · Runs in your browser

How to use

  1. 1Enter cohesion c, unit weight gamma, footing width B, embedment Df, and friction angle phi (degrees).
  2. 2Optional: factor of safety for an allowable pressure estimate.
  3. 3Read overburden q, factors, ultimate pressure, and allowable if FOS set.

Frequently asked questions

Is this LRFD or EC7?
No. It is a classical ultimate-pressure estimate without code partial factors.
What about the water table?
Not included; effective stress and buoyant unit weight must be handled by the user elsewhere.

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