To determine the ultimate bearing capacity in Plaxis 3D, you can perform a load-settlement analysis by gradually applying load increments to the footing or pile until failure occurs, indicated by excessive displacement or loss of convergence. The ultimate bearing capacity is typically taken as the load corresponding to the peak of the load-settlement curve or a specified displacement criterion.

Yes, surface displacement is required to identify the ultimate bearing capacity, as it helps determine the failure point and the settlement behavior under loading. Ensure appropriate boundary conditions, mesh refinement, and material models are applied to achieve accurate results.

Note: Validation of results with analytical or experimental methods is recommended to ensure reliability.

Sir, do you have the stepwise procedure?

Thank you so much for your answer. Can you please guide , how to give load increments in plaxis 3d ?