Chapter 22 Post-Fire Analysis

Question 1

What is one of the most important size of duties of first chief and company officers

Answer 1

locating the fire in determining its severity, foundation for rest of operation. sets # of ffers needed, equipment needed…also need to know severity and location to know life hazard, most effective point of attack and most efficient venting method.

Question 2

from the point of view of a fireground commander a post-fire analysis is…

Answer 2

a strategy, tactics, and safety investigation

Question 3

when should a post-fire analysis of strategy and tactics be conducted

Answer 3

after a major fire or an ordinary fire were significant event occurs (general)

Question 4

A Fireground analysis be conducted when:

specific examples of when

Answer 4

1. a firefighter is killed
2. when an explosion, back draft, boiling liquid expanding vapor explosion (BLEVE) occurs
3. structure of failure occurs which injures a firefighter
4. large loss by fire

Question 5

who should perform the post-fire analysis

Answer 5

the officer in command or another the chief officer

Question 6

who gains the greatest benefit from the post-fire analysis

Answer 6

the chief officer doing the analysis

Question 7

of the three parts to a post fire-ground analysis

Answer 7

1. the fire fact sheet- information about the fire, the structure, strategy, and tactics
2. fire-ground diagram- overhead line drawing showing the fire building, exposures, apparatus, ladder placement, point of origin, collapse, and explosion areas
3. photographic documentation- photos of significant factors identified in part one into

Question 8

two important facts for the fire analysis fact sheet

Answer 8

point of origin

cause of fire

Question 9

fire spread beyond the point of origin is primarily determined by a structures

Answer 9

design and construction

Question 10

what is the fire spread weakness in each of the major five categories of construction

Answer 10

1. fire resistive- HVAC
2. non/limited- combustible- combustible roof deck
3. ordinary- concealed voids and spaces
4. heavy timber- large fire load tremendous radiant heat
5. wood frame- combustible exterior walls/ small horizontal separation between buildings

Question 11

general collapse characteristics of standard building construction types

Answer 11

1. fire resistive- localized spalling concrete, ( steel skeleton buildings) steel floor support means separate from main girder at connection
2. noncombustible- early roof collapse
3. ordinary -parapet walls of brick and joist buildings often collapsed near the roof level or at setbacks
4. heavy timber- fully involved building suffer floor collapse followed by masonry wall collapse
5. woodframe- bearing wall collapse with instantaneous floor collapse

Question 12

the most frequent causes of burning building collapse

Answer 12

1. fire destruction
2. explosion
3. backdraft
4. BLEVE
5. impact of postings or equipment, striking structure
6. accumulation of water on roofs and upper floors

Question 13

in what stage of fire to most people burning buildings collapse

Answer 13

second and third stages of fire

Question 14

fire service defined strategy as

Answer 14

the planning and directing of actions of large number of firefighter, apparatus, and equipment

Question 15

the commander the commander must designate officers for specific preplanned divisions, and groups to command fires including…

Answer 15

fireground designation plan (A,B,C,D)
fire building designation plan
fire communication plan
plan to establish the location/ identification of CP
plan to establish an alternate water supply

Question 16

guidelines that should be followed for creating a post-fire analysis diagram

Answer 16

1. use standard symbols
2. overhead drawing with the exposure number at the bottom of page
3. on writing symbols on diagram should be readable from left to right, ( exposure number, bottom of pg)
4. date time of the fire
5. alarm box number
6. address of fire, top of page
7. relative the size (scale) be discernible
8. construction type
9. height in stories, width, length ( lower left-hand corner of diagram)

Question 17

on a fire diagram the area of fire origin is denoted by

Answer 17

a Greek cross

Question 18

on the fire diagram… area fire damage

Answer 18

diagonal lines

Question 19

on fire diagram… fatality

Answer 19

cross small portion presents head, S supine, P prone

Question 20

on fire diagram… engine

Answer 20

rectangle with lines representing hoses

Question 21

on fire diagram… latter

Answer 21

rectangle with ladder, aerial platform represented by box at the end of letter

Question 22

on a fire diagram… portable deluge

Answer 22

semicircle

Question 23

on a fire diagram… floor or roof collapse

Answer 23

crossed or double diagonal lines… can also indicate an exterior masonry wall collapse

Question 24

on a fire diagram… wind direction

Answer 24

aligned with an arrowhead

Question 25

on the fire diagram… North

Answer 25

N

Question 26

what is the most important part of a post-fire analysis

Answer 26

photographic documentation

Question 27

how many pictures does it take to create a 50 minute lecture

Answer 27

25

Question 28

what should be photographed

Answer 28

1. all four exposures
2. avenues of fire spread
3. point of origin
4. explosions… fixture
5. collapse
6. exact position of the body
7. water supply

Question 29

what’s the problem with fire investigations, that are automatically performed

Answer 29

they occur only after a fire fatality in these investigations concentrate on safety and survivable at a fire. they do not address by fighting strategy and tactics