Considers the likelihood of secondary ignition of the interior of buildings, based on the incident heat from a fire event and the duration of exposure to the event. Makes an assessment of the proportion of occupants who do not escape from the secondary fire, thereby attempting to incorporate evaluation behaviour into the assessment. Due to the lack of suitable data on the evacuation behaviour relating to external fires, selected case studies have been used to estimate particular behaviour patterns. The key finding of this study is the increased probability of fatalities of building occupants due to multi-point ignition events, as compared to that for a single ignition. Typical case studies have been applied to the model.
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