I would like to calculate a hall frame with loads from a crane runway. It is not quite clear for me, what denote the various action categories. Can you explain it to me?


The standard EN 1991-3, Table 2.2., presents load groups 1 to 10. These are equal to the denotation of the classes in our software.

The integration in Categories A to E is a specific classification by Dlubal Software.

  • Category A: Ultimate limit state → Table 2.2 of the standard: ULS (1-7) 
  • Category B: Test load (8) 
  • Category C: Accidental (9,10) 
  • Category D: Serviceability limit state (11-13) 
  • Category E: It was added to the combinatorics on customer request and should be used for the load cases where the support forces from the crane girder design are combined with the related structure. 

The article of our Knowledge Base (see Links below) points out that the combinatorics (Classes A to D) should be used for the preliminary design of crane girders. For the supporting structure (brackets, supports, trusses), this combinatorics should not be used.

In your model, the support loads from the crane girder design are only considered in Category E.


combinatorics crane runway loads from crane girders category crane runway


[1]   Eurocode 1: Actions on structures - Part 3: Actions induced by cranes and machinery; EN 1991‑3:2010‑12


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