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How to do fire design

Contents

Below you can download a pdf (EN or NL) containing:

  • theoretical background on the fire calculation
  • practical guide on how to use the fire module in Diamonds
  • worked examples

You could also rewatch the webinar (EN, NL) on fire design.

FAQ

Is it possible to do a fire design on timber/ stainless steel bars?
It’s possible to do the thermal analysis . But it’s NOT possible (yet) to do a fire design calculation on those bars.
Is it possible to do a fire design on surfaces?
No. The module for fire design is only made for bars. There are no plans to expand this to surfaces.
Does Diamonds verify buckling in a concrete column in case of fire?
No.

EN 1992-1-2 does not state that buckling in case of fire must be checked similar to a cold state but with reduced properties. So it is not implemented in Diamonds.

EN 1992-1-2:ANB 2021 §5.3.2 provides a table for the design of columns in case of fire. The table contains minimum dimensions and centre distances. EN 1992-1-2:2004 §5.3.2 (3) states that this method takes second-order effects into account.

EN 1992-1-2:2004 Annex C also deals with buckling in columns. NBN EN 1992-1-2:2004/A1:2019 is an amendment to this.

Annex C again contains tables with minimum dimensions and reinforcement spacings. Annex C is informative in Belgium, but not prohibited.

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