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Norman > chapter 9 > Flashcards

chapter 9 Flashcards

1
Q

Which type of ventilation is being undertaken when the

products of combustion are pulled out by a fan?

A

Negative pressure

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2
Q

Which is the best location to use the hoseline for

ventilation efforts?

A

Medium fires in a residential building

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3
Q

How long is the kerf cut generally made?

A

10 inches

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4
Q

What type of roof is built over an existing one when the

older roof leaks?

A

Rain

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5
Q

What shape holes should be placed at the corners of the
roof section to be cut that will allow pike poles to be
inserted to assist in pulling the roof?

A

Triangle

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6
Q

What angle does the 2X4 join the top plate in an inverted

roof?

A

90 degree

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7
Q

What tips off firefighters to the presence of a bowstring

truss roof?

A

Dome shape roof

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8
Q

What part of the staircase should the firefighter avoid

touching?

A

Banister

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9
Q

Which of the following is true when venting for life?

A

Take out the windows

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10
Q

Which of the following actions is strictly forbidden when

extending the hole in the roof?

A

Using hoseline in the hole

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11
Q

Which type of ventilation requires more manpower?

A

Vertical

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12
Q

What must be done before the trench is cut to help ensure

its success?

A

Primary vent hole cut

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13
Q

What is the shape of the fastest type of examination hole?

A

Straight line

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14
Q

What size hoselines need to be used to combat and win

against a metal deck roof fire?

A

2 1/2-inch

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15
Q

What is the second most common vertical avenue for fire?

A

Pipe chase

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16
Q

What pattern is the steel bar joist bent into for the

metal deck roof?

A

Z

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17
Q

How should a firefighter proceed when the fire and heat is

driving toward him on the roof?

A

Crawl

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18
Q

Which of the following is better indicator of where the

fire is located below the roof?

A

Fire

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19
Q

What can cooling the metal deck roof’s ceiling help

prevent?

A

Metal deck roof fire

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20
Q

How wide are the Insulpan panels generally?

A

8 feet

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21
Q

How far from the desired opening is the fan placed when

performing positive pressure ventilation?

A

10 feet

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22
Q

Which of the following is NOT part of mechanical

ventilation?

A

Opening the roof

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23
Q

What makes the truss roofs the most dangerous for

firefighters to deal with?

A

Lightweight design

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24
Q

What type of force is acting upon the bottom chord of a

truss?

A

Tensile

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25
Q

Which type of truss is the most deadly per incident?

A

Bowstring

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26
Q

How far from the main vent hole should the trench cut be

placed?

A

20 to 25 feet

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27
Q

What is one of the earliest and simplest means of

mechanical ventilation that can be performed?

A

Fog pattern

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28
Q

What position should members ascending the staircase hold

their heads when a skylight will be removed?

A

Looking straight

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29
Q

Which of the following would benefit from vertical

ventilation?

A

Cockloft fire

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30
Q

How far apart should the cuts be made when performing a

trench cut?

A

3 feet

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31
Q

How far apart are the main support beams in the old-style

roof construction?

A

16 inches

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32
Q

What should be the maximum size hole cut when subdividing

the hole before starting to pull the roofing?

A

4X4 foot

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33
Q

Which windows should be opened when using positive

pressure ventilation?

A

Those in the room to be vented

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34
Q

How is the decking laid in relation to the bar joists in

the metal deck roof?

A

Perpendicular

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35
Q

What is the last thing that should be done when venting

the old-style flat-roof?

A

Vent the roof

36
Q

How far into the member does the gusset plate penetrate?

A

1/4-inch

37
Q

How far from the intended edge of the trench should

examination holes be made?

A

5 or 6 feet

38
Q

Which type of ventilation is being performed when windows

are broken out?

A

Horizontal

39
Q

What is the most effective fog pattern used when

performing mechanical ventilation with a hoseline?

A

30 degree

40
Q

What type of ventilation is best to move cold smoke?

A

Mechanical

41
Q

What is the most common vertical artery that is

encountered in fire suppression activities?

A

Staircase

42
Q

What should be done with the soil pipes to determine if

there is a fire threat in the attic?

A

Feel them

43
Q

What is a common problem for smoke ejectors and hoselines

when performing ventilation?

A

Forced draft over embers

44
Q

How many pieces within the truss design need to fail

before the entire truss may collapse?

A

1

45
Q

Which of the following is NOT part of every truss?

A

Bowing

46
Q

What is the maximum distance above the roof that a
firefighter should allow a spinning blade to be to prevent
injuries?

A

6 inches

47
Q

What will happen when a wood joist is sounded by a tool?

A

No bounce

48
Q

How much more smoke can be moved using positive pressure

than negative pressure ventilation?

A

Two times as much

49
Q

When should windows be broken in relation to the hoseline

attack?

A

Just as it begins

50
Q

Which of the following is NOT generally a concern when

performing PPV?

A

Curtains in the area

51
Q

What type of operation is the use of trench cuts?

A

Defensive

52
Q

Which type of beam is used to ensure the floors will not

squeak, but gives without warning under fire conditions?

A

I-beam

53
Q

What is the answer when fire has taken over void spaces in

a structure?

A

Complete ventilation

54
Q

What is the maximum distance that the standard wooden beam

can be spanned?

A

25 feet

55
Q

Which type of roof has its main roof supports at the roof

level?

A

Standard flat

56
Q

Where must the firefighters enter a building when PPV is

being used?

A

Location of the fan

57
Q

What is the key to determining if ventilation is for life

or fire?

A

Timing

58
Q

Which of the following is NOT a complication presented by

the Insulpan panels?

A

Common cockloft

59
Q

Which of the following conditions yields more space to

advance a hoseline?

A

Broken window

60
Q

How wide can the metal decking be that is used to

construct metal deck roofs?

A

6 feet

61
Q

What should be the guiding force when deciding to open a

window or break it?

A

Heat

62
Q

What place in the multi-winged apartment building is the

best place to attempt to cut off the fire?

A

Throat

63
Q

What size members are used in lightweight trusses?

A

2X4

64
Q

Which location in the building is best to locate the

trench cut?

A

Narrowest

65
Q

What size hole is generally desired when venting the roof?

A

8X8 foot

66
Q

Which of the following is NOT part of mechanical

ventilation?

A

Opening the roof

67
Q

What force is acting upon the top chord of a truss?

A

Compressive

68
Q

Which direction will fire travel the quickest in?

A

Low to high points

69
Q

What does venting for fire wait upon?

A

Resources in place for attack

70
Q

What is the most efficient distance to stand from the

opening when using a fog stream to ventilate an area?

A

6 to 8 feet

71
Q

What is probably the greatest danger to firefighters who

are participating in roof ventilation?

A

Other firefighters

72
Q

What is a common concern with all parallel chord trusses

during ventilation operations?

A

Cutting the top chord

73
Q

Which of the following would heat to its failure point the

fastest?

A

1/8-inch thick angle iron

74
Q

What should be done when a larger opening is needed in the

old-style flat-roof?

A

Extend the existing opening

75
Q

How long after exposure to significant fire does the metal

deck roof fail?

A

5 minutes

76
Q

What shape is the building with an inverted roof?

A

H

77
Q

How many men should be assigned to the rooftop of a

building with an old-style flat roof?

A

4

78
Q

How many times the height of the wall should the collapse
zone be when dealing with a building with a bowstring
truss roof?

A

2

79
Q

What was positive pressure ventilation originally tested

to reduce?

A

Stack effect

80
Q

How many main reasons are there for performing

ventilation?

A

2

81
Q

What place in the multi-winged apartment building is the

best place to attempt to cut off the fire?

A

Throat

82
Q

How long can it take for a lightweight truss ceiling to

fail?

A

Less than 10 minutes

83
Q

Which type of roof has its main roof supports at the roof

level?

A

Standard flat

84
Q

Which type of ventilation is best to perform at a mattress

fire?

A

Horizontal

85
Q

What is the natural path of the heated gases during a

fire?

A

Upward

Norman (8 decks)

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