The "Earthquake" frame serves to input earthquake parameters. Directions of input earthquake effects are displayed on the desktop.
If not provided by measurements, the coefficients kh and kv can be calculated according to EN 1998-5.
The earth pressures analysis with earthquake influence is described in the "Influence earthquake", a theoretical part of the help.
For the LRFD Verification methodology, it is possible to define coefficients for seismic combinations according to the AASHTO.