A Round Robin of fire modelling for performance-based design

Research output: Contribution to journalArticle


Nine participants, representing eight different Swedish fire consultancy firms participated in a Round Robin study where two different cases were simulated with the Fire Dynamics Simulator. The first case included a large open warehouse where the activation of a sprinkler system was to be studied. In the second case time to critical conditions in a theatre was to be calculated. The participants were given clear instructions on the building layout and heat release rate for the two cases. Still, the results demonstrate a significant variation in time to sprinkler system activation (range of 110 seconds) and available safe escape time (range of 60 seconds), between the participants. It is important to emphasise that some degree of variation is unavoidable, as engineers can model things differently without the modelling solution necessarily being incorrect. Even though it is hard to isolate and specific cause of the variation, some of the variation seen in this study is related to modelling choices that are questionable and consequently problematic for the reliability of the fire safety design.


External organisations
  • Research Institutes of Sweden (RISE)
  • Brandskyddslaget AB
  • Ramböll Sverige AB
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Other Civil Engineering


  • fire dynamics, Fire Dynamics Simulator, fire safety engineering, performance-based design, round robin
Original languageEnglish
JournalFire and Materials
Publication statusE-pub ahead of print - 2020 Jul 20
Publication categoryResearch