In the Ground Failure section of the Geotechnical Analysis Settings tab, the design check is activated by default. The theoretical principles of ground failure can be found in the chapter Ground Failure in the theoretical principles.
For the ground failure design check, you can either specify user-defined values for the allowable soil stress or calculate the bearing resistance according to EN 1997-1 Annex D.
If you want to perform the ground failure design check, it is necessary to assign a corresponding characteristic load combination (SLS) to each ULS load combination. You can do this in the Load Cases and Combinations tab. The assignment of SLS combinations to ULS combinations is necessary because the characteristic loads of the SLS combinations are needed to calculate the load eccentricity and the effective foundation area. Without this assignment, the corresponding calculations cannot be carried out.
User-Defined Values for Allowable Soil Stress
You can specify the characteristic allowable soil stress σRk in the Ground Failure section.
Bearing Resistance according to EN 1997-1 Annex D
You can calculate the bearing resistance according to Annex D of EN 1997-1. In the Geotechnical Design Configuration, in the Ground Failure section, select the option 'Bearing resistance according to EN 1997-1, Annex D.
