Hi All,
I have been cracking my head around this situation with robot on the columns design to ec2 on the eccentrities and the Moment Resistance saftey factors and I think I know why.
After running some manual verifcations and comparing the two results I finally figured it out.
Hi,
Will IĀ“m not sure if youĀ“re suppose to apply it on both direction, some EC2 expert can answer that question. But I would like to hear Autodesks thought about the this issue and the issue of the slenderness. What I noticed is, that when using the danish annex then I get the same value as Robot. Stil donĀ“t know how it is calculated when EN 1992-1-1:2004 AC:2008 is used.
5.2 Geometric imperfections - in Robot the eccentricity is applied only in the 'worst' direction.
The same is assumed for 5.8.9 Biaxial bending
(2) Separate design in each principal direction, disregarding biaxial bending, may be made as a
first step. Imperfections need to be taken into account only in the direction where they will have
the most unfavourable effect.
I think it is better communicated in the French NAD for EC2
"L'imperfection lgeomĆ©trique ei (EC2 EN 5.2 (1)) est prise en compte dans le sens le plus dĆ©favorable Ā»
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