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FAQ 002574 EN 5 March 2019

Wieland Götzler Add-on Modules STEEL EC3 RF-STEEL EC3

I measure according to General Procedure 6.3.4 EN 1993-1-1 and have the addition "Extended procedure according to Dr. med. Naumes "activated. The branch value alpha * crit is displayed in red. Should I be worried?

Answer

No, you do not have to worry. If the value alpha * crit, ie the branching value without torsional rigidity, is displayed in red and thus amounts to "0", the imperfection coefficient (European bending torsional buckling line) does not decrease and the initial value of the imperfection coefficient is used.

Keywords

Steel construction Stability General method Naumes EC3 Eurocode 3 branching value transverse bending bending and compression buckling bending torsion buckling

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