FAQ 002108 FR

Calcul RFEM RSTAB 5.xx 8.xx

When trying to calculate a result combination, I receive the "Warning No. 30014 - Unacceptable addition of load cases in reculs combination! The result combination includes load cases or load combination with result according to the second-order theory with nonlinear relations and thus, they cannot be added [...]". What does this mean exactly?


This warning appears in case of the following definition variants of result combinations:

  • LC/S + LC/S

  • factor * LC/S or factor * LC/S

Detailed explanation is possible on the second definition variant, for example: A load combination was calculated according to the second-order analysis. Results show a nonlinear relation, which should not involve doubled axial force with doubled moment at the same time, for example. Now, if you add a factor to the lod combination results, it multiplies each internal force. This conflict (nonlinear calculation of results and the subsequent linear multiplicartion) causes the warning appears.



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RFEM Logiciel principal
RFEM 5.xx

Programme de base

Logiciel de calcul de structures aux éléments finis (MEF) pour les structures 2D et 3D composées de plaques, voiles, coques, barres (poutres), solides et éléments d'assemblage

RSTAB Logiciel principal
RSTAB 8.xx

Programme de base

Logiciel de calcul de structures filaires composées de charpentes, poutres et treillis. Il permet le calcul linéaire et non linéaire des efforts internes, des déformations et des réactions d'appui