Ch 22 Post Fire Analysis Flashcards
What are the known reoccurring fire spread weakness associated with each one of the construction types? Pg 310
- Fire resistive: central air conditioning duct systems allow the spread of smoke, heat, and flame throughout a fire resistive building
- Non combustible/limited combustible: a combustible roof deck allows the spread of flame and smoke throughout a noncombustible building.
- Ordinary Construction: concealed voids and spaces allow fire spread throughout ordinary constructed buildings.
- Heavy timber: large amounts of structural fire loading, in combination with unprotected window openings, create tremendous radiated heat waves which spread fire to expose buildings when heavy timber constructed buildings burn.
- Wood frame: combustible exterior walls with small horizontal separations between buildings allow rapid fire spread between wood frame buildings.
What should be looked for when determining the exact point
of origin of the fire in the room of origin? p. 309
Lowest point of deep char
What allows the spread of flame and smoke throughout a noncombustible building? p. 310
Combustible roof deck
What part of the post-fire analysis should be done first when the fire scene will be cleaned up the day after the fire? p. 309
Photo documentation
Who should conduct the post-fire analysis? p. 308
Commanding officer
What should be done with the collapse danger zone as part
of the post-fire analysis? p. 317
Measure and photograph it
What symbol should be used to designate the point of fire origin?
p. 314
Greek cross
Where should exposure number I be located on the fire diagram? p. 314
Bottom of the page
How many bowstring timber trusses were inside the enclosed roof space of the Brooklyn supermarket? p. 306
Seven
Which type of buildings suffer localized collapse by spalling chunks of concrete? p. 310
Fire-resistive concrete
What should be put on the post-fire analysis when the evidence of the cause of the collapse was destroyed by fire? p. 311
State subjective opinion
Who is responsible for determining the point of origin and the cause of the fire for the official fire record when arson is suspected? p. 309
Officer in command
How many people are needed to perform the photographic documentation? p. 316
Two
What needs to be determined after the point of origin in the post-fire analysis? p. 309
Cause of fire
Where should the construction type, height in stories, and building width and length be indicated on the fire
diagram? p. 314
Lower left hand corner
