Why there are several load combinations created in the case of the automatic combination that are apparently the same?

Answer

The automatically created load combinations are solely generated from the definition of combination expressions. Thus, it may happen that two load combinations are created according to different combination expressions, but contain the same load cases with the same factors.


However, the load combinations only seem to be the same, because the information saved in the load combination is different. Thus, the load combinations are assigned to the underlying combination expression and can be selected subsequently for the combined design, for example.
Since it is thus necessary to define a unique combination expression for each load combination, these load combinations that are apparently the same are not combined.

Keywords

Load combination Combination expression Combinatorics

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