Bärförmåga vid brand i hallbyggnader med samlingslokal (Br2)

Structural fire safety in Sweden for one- and two-story assembly hall buildings have been studied with regards to recent concerns regarding a large variation in the interpretation of the regulations and the resulting fire protection of the buildings. The study has been divided into three parts. First, an analysis of the current national regulations and identification of unclear paragraphs has been performed where input was gathered from practitioners and other stakeholders. Secondly, more than twenty fire safety design documents were analyzed with regards to verification, documentation and fulfilment of the regulations. The results from the analysis revealed that there is no connection between the size of deviation from prescriptive regulations and the level of verification that is required in the regulations. Thirdly, an international comparison of safety levels was conducted, revealing that Swedish requirements are on average level with a base requirement of R 30, i.e. that structures should withstand the standard fire temporary curve for 30 minutes. However, the possibilities for alternative solutions with little or no fire protection of the structure are fewer and more complicated in Sweden than in manyother countries. (Less)