Brandförlopp - Lätta stommar

Sammanfattning: This report deals with fully developed fires in compartments where the boundary structure is made of mineral wool and plasterboard. The project was initiated due to new Swedish regulations (BBR 94) that allow buildings with wood structure to be built more than two storeys high. The temperature-timecurves in this report are computed according to authorized methods used in Sweden (method I and method II). The accuracy of the first has been questioned due to simplifications in the model it is based upon and therefore the methods are thoroughly analysed. A comparison between fullscale experiments and computer simulated fires has been carried out. The results indicate that the validity of method I is good. The report also presents a comparison between light weight wall construction and concrete construction. Finally some suggestions are made concerning how further studies should be carried out.