Why do several seemingly identical load combinations occur when combining automatically?

Answer

The automatically created load combinations result exclusively 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 subsequently be selected, for example, when combined in the design.
Consequently, it is necessary to define a unique combination expression for each load combination, so these seemingly identical load combinations are not combined.

Keywords

Load combination Combination expression Combinatorics

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