Free software to calculate rock bearing capaciyt using Hoek-Brown Failure Criterion – 2002 developed by RocScience, Inc.
Geotechnical Engineering Circular No. 6 – Shallow Foundations 2002 FHWA-IF-02-054
Shallow Foundation Design using the Standard Penetration Test (SPT) Various methods are used for the bearing capacity criterion and the settlement criterion (serviceability)