The imperfections are entered in the same way as the loading in the user interface of RFEM and RSTAB. You choose the type of imperfection when creating the imperfection cases. You can assign the created imperfection cases to individual load cases or use them as part of the load case combination.
General information on handling imperfections in RFEM and RSTAB is available in chapter Imperfections of the RFEM manual.
Special features of the imperfections in relation to the calculation with 7 degrees of freedom are described in this chapter.