Mittendorf

Question 1

fire gas ignite temp

Answer 1

800-900 degrees

Question 2

BTU release for wood/polyurethane/polystyrene

Answer 2

wood-7000
p-urethane- 12000
p-styrene- 18000

Question 3

flashover is more common due to

Answer 3

lower ignition temp of plastics and interior items

Question 4

flashover FF death %

Answer 4

85

Question 5

signs of backdraft

Answer 5

heavy, dark, pressurized smoke

doors/windows hot to the touch

Question 6

flashover defined

Answer 6

sudden ignition of exposed combust sufaces or gases in an involved area

Question 7

flashover (opposed to backdraft) lacks

Answer 7

sudden O2 introduced
confinement
heated flammable gases under pressure

Question 8

primary gas for fatalities

Answer 8

CO

Question 9

O2 % and CO PPM following flashover

Answer 9

O2 21%—>4%

CO- 40,000 PPM

Question 10

single family dwelling considerations

Answer 10

time of day

heat hole over fire near ridge beam

Question 11

Multistory dwelling priority

Answer 11

improving atmosphere in stairwells and hallways

Question 12

ladders on ________ward side

Answer 12

wind

Question 13

Center hallway (old construction) characteristics

Answer 13

allows more rooms
3+ story buildings have fire doors
fire doors separate stairwells and hallways
skylights over top hallway

Question 14

center hallway ventilation

Answer 14

start low and work up

Question 15

center hallway vertical vent priorities

Answer 15

stair shaft
skylights
over fire room

Question 16

Garden Style apartments

Answer 16

common attic
low pitch roof
2x6 rafters

Question 17

Institutional fires

Answer 17

church/school/hospital

common in kitchen, lounge, or storage

Question 18

Commercial buildings

Answer 18

common attic

fascia considered common attic

Question 19

warehouse fire characteristics

Answer 19

easy fire spread
size of electrical service
what is made?
704 placard?

Question 20

primary concern in high rise fire

Answer 20

spread to upper floors

Question 21

elevators can be used in high rise if…

Answer 21

terminates 5 floors below

Question 22

walls that penetrate attic

division wall/or partition wall

Answer 22

division wall

Question 23

Parallel blowers for

Answer 23

covering a larger opening

Question 24

blowers in series for….

Answer 24

increasing volume (10%)

Question 25

systematic ventilation

Answer 25

near to far | low to high

Question 26

exhaust opening

Answer 26

0.75-2.0 times the PPV intake

Question 27

PPV works against up to _______mph wind

Answer 27

25

Question 28

PPV effective in excess of __________ft

Answer 28

1000

Question 29

2 categories of stair shafts

Answer 29

interior access, interior shaft, open to roof | exterior access, interior shaft, open to roof (better airflow)

Question 30

gas blower introduces how much CO PPM

Answer 30

140-160

Question 31

Ventilation Size Up

Answer 31

``` building age/type location/extent of fire roof characteristics ladders hazards ```

Question 32

screens restrict flow by....

Answer 32

50%

Question 33

turbine vents ______% more efficient with top in place

Answer 33

30

Question 34

heat hole size guideline

Answer 34

residential-4x4 | commercial-8x8

Question 35

depth of rotary saw cut

Answer 35

3.5-5

Question 36

chain saw can cut ______gauge steel

Answer 36

14

Question 37

gas blower______% more efficient than electric

Answer 37

40