Osäkerheter vid brandteknisk dimensionering av ventilationssystem

Sammanfattning: This masters thesis deals with smoke spread via ventilation systems. One aim of the thesis is to investigate and explain the differences in efforts to prevent smoke spread via ventilation systems in different countries. A second aim of this thesis is to investigate how frequently occurring smoke spread via ventilation systems in Swedish buildings are. A third aim is to investigate how uncertainties in input variables to smoke spread calculations will affect the result of calculation. To be able to do this the most important input variables are identified and analysed. A calculation example is also conducted in the end of the thesis where a supply and exhaust system is analysed with an event tree and the computer program PFS.