Imposed and roof imposed loads (Eurocode )

Tekla Structural Designer
Modified: 5 May 2021
2025
Tekla Structural Designer

Imposed and roof imposed loads (Eurocode )

Definition of psi factors for imposed loadcases

In the Loadcase dialog when an imposed loadcase is selected, you are able to select the Category of imposed load as follows - default Category B - office:

  • Category A - domestic/residential
  • Category B - office
  • Category C - congregation
  • Category D - shopping
  • Category E - storage

The default values of Ψ0, Ψ1 and Ψ2 vary depending on the category selected and also with the National Annex being worked to. The values can be edited if required. See “psi factors

Definition of psi factors for roof imposed loadcases

Roof imposed loads are not categorised so the default values of Ψ0, Ψ1 and Ψ2 only vary depending on the National Annex being worked to. Again, the values can be edited if required.

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