GGU-UNDERPIN: "Deep-seated stability" menu item

Using this menu item, you can select the intersection with the wall manually and enter an appropriate depth.

In the "Analysis for increased earth pressure/at-rest pressure" group box you can define whether the deep-seated stability analysis should be done with active earth pressure or alternatively, the partial factors DS-P/T should be used.

EAB R 44 stipulates that this must also be used for increased or at-rest earth pressure to analyse deep-seated stability. In addition, the partial factors for DS-P/T (LC1/2) must be adopted. In the DS-P/T load case the partial factor for passive earth pressure is 1.35. Only when the 'normal' partial factor for the passive earth pressure is greater than 1.35 DS-P/T is adopted.

The partial factors for the actions to DS-P/T are around 5% greater than those to DS-T. Simplified, but conservatively, the anchor forces are multiplied by the factor '1.05'. R 44 does not always return higher utilisation factors.