Inside File\Examples\Training Examples user can select in the list the Steel Design Training Example with the options for a. Eurocode and b. AASTHO, as shown in the image below. The definition of slender cross section parts are shown in the Properties\Cross-Sections\Reference Sets and the buckling characteristic effective lengths are inputted by a table. This is a spatial steel truss design and check training example that also includes the necessary additional input for checking the steel sections capacity against the codes using RateF. Resistances and Capacity Factors are the results for the action that evaluates the load rating factor for the structure as in the example that is disponible in the link, as shown in the plot below.   

   

Additional reference about steel modeling can be found at the link below, at Frequent Answered Questions from File\Examples\Demo Examples & FAQ.

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