Hi,
when revising the calculation note of a bar, I saw that despite clasifying the section as Class 3, when calculating slenderness ratio, Lam_LT a reduced effective capacity coefficient Weff,y for a cross section class 4 is used.
I attached a pdf of the calculation note.
In case that actually the cross section was classified as Class 4, I'd like to know if Robot is taking into account that the z profile has lips on both edges, upper and lower flange, so they shoulf be considered as "internal compression parts" according to Eurocode.
Many thnaks in advance
Jorge
