In the Ground Failure section of the Geotechnical Calculation Configurations tab, the design is activated by default. The theoretical background of ground failure can be found in the chapter Ground Failure in the theoretical principles.
For the ground failure design, you can either specify user-defined values for the allowable soil stress or calculate the bearing resistance according to EN 1997-1, Annex D.
To perform the ground failure design, it is necessary to assign a corresponding 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 required for the calculation of load eccentricity and the calculated base area. Without this assignment, the corresponding calculations cannot be performed.
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 ground failure resistance according to Annex D of EN 1997-1. Select Bearing resistance according to EN 1997-1 Annex D in the Ground Failure section of the Geotechnical Design Configuration.
