Error 451 - opening lies within another opening

[proconcrete3D]

Dear Dlubal Team;

RFEM-5 doesn’t allow to define “opening inside opening” – it reports an error before calculations. It was possible in all previous versions of RFEM-2..RFEM-4.
It is very useful in case of the stepwise variable thickness of slabs (foundations or floor slabs in the column areas)
Please allow it in the next releases of RFEM-5.

BR.