Fire March 1, 2010 ? Types: natural, accidental, undetermined and incendiary ? Gerbuston and tire triangle (fuel O, heat ) ? Fire triangle -maintain also spread - conduction conviction radiation ? conbustion practice - glowing flaming spontaneous explosive ? Stages - intial growth flashoer past ? factors location and material ? Building ? more measures ? Scene ? Danger ? Origin and caus of analysis ? first are of origin ? evaluate areas undamaged less affected ? move to areas of increasing damage ? identify area of heaviest damage ? second point of origin ? examin fire patterns and physical evidence ? you will need to look at what the intial heat spread. ? once we are inside if we find most of the damage being upstairs ? one of the indicators that fire started here with radiation ? Recurring Patterns ? V- additional ? patterns ? Line of Demarcation ? shows where smoke line is.. ? At the crime scene ? Documenation ? sketches ? Notes ? Photographs ? Collect evidence ? Photographs ? because of fire fighters it sometimes would make it difficult to tell if the firefighters broke doors or was it the perpitrator. ? Evidence collection ? With a suspect fire ? collect around point(S) of origin ? Where - ADC or mechanial sniffers ? Comparison, control samples of all ? carpet, paints, ect. ? SPMEs ? ADC's - dog
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