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Another point to note is that if the suitability for beams is marked in ideCAD Static, the 'torsional constant' section, which you can see in the following image in the set modifiers section of ETABS , should be intervened. 10 (-6) should be written.
As a full rigid diaphragm will be used for flooring, membrane entry should be made with ETABS.
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In ideCAD Static, two load case analysis type should be selected. In this type, the additional eccentricity effect is solved by the dynamic method. For the dynamic method, ETABS modeling should be searched from etabs sources with the title 'accidental torsion with dynamic procedure'.
1- Mass source regulation
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Calculation results are given in the second order effects section of the ideCAD Static Earthquake regulation report.
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ETABS is register of Trademark for CSI