Re: SECTION EFFECTS As you stated, when designing steel elements that are rigidly connected to each other, Axial force and Biaxial bending, that is, compound effects are controlled. The relevant equation is used according to the regulation you selected. For example, for the Turkish steel code GKT method, H sections may be 11.1a or 11.1b. If you pay attention to the equation, moment is not the only force that affects, naturally, the combination you see for moment in cross-sectional effects is not the same as the combination in the design. In the design under composite effect, each combination is looked at one by one and the combination that gives the most unfavorable PMM ratio is used for the final design, and the program gives the relevant loading and design results both in the interface and in the reports.