Hello, in ideCAD, there is no expression in the form of structural analysis without considering the basis in the analysis settings. As far as I understand, you are talking about the superstructure interactive solution. In Analysis Settings -> Base-Soil -> "Superstructure interactive solution" or a solution option is available considering the foundations. When the Superstructure interactive solution is marked, the analysis is made by taking into account the rotations and displacements occurring in the foundation, in the superstructure calculation. The superstructure and the foundation are solved together. When the Superstructure interactive solution option is not checked, the Superstructure and the base are resolved separately. Column and shear effects in the superstructure analysis are basically used. While the superstructure, that is, the structure, is being solved, the columns are included in the calculation as recessed from the bottom.
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