chapter 9

Question 1

Which type of ventilation is being undertaken when the

products of combustion are pulled out by a fan?

Answer 1

Negative pressure

Question 2

Which is the best location to use the hoseline for

ventilation efforts?

Answer 2

Medium fires in a residential building

Question 3

How long is the kerf cut generally made?

Answer 3

10 inches

Question 4

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

older roof leaks?

Answer 4

Rain

Question 5

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?

Answer 5

Triangle

Question 6

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

roof?

Answer 6

90 degree

Question 7

What tips off firefighters to the presence of a bowstring

truss roof?

Answer 7

Dome shape roof

Question 8

What part of the staircase should the firefighter avoid

touching?

Answer 8

Banister

Question 9

Which of the following is true when venting for life?

Answer 9

Take out the windows

Question 10

Which of the following actions is strictly forbidden when

extending the hole in the roof?

Answer 10

Using hoseline in the hole

Question 11

Which type of ventilation requires more manpower?

Answer 11

Vertical

Question 12

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

its success?

Answer 12

Primary vent hole cut

Question 13

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

Answer 13

Straight line

Question 14

What size hoselines need to be used to combat and win

against a metal deck roof fire?

Answer 14

2 1/2-inch

Question 15

What is the second most common vertical avenue for fire?

Answer 15

Pipe chase

Question 16

What pattern is the steel bar joist bent into for the

metal deck roof?

Answer 16

Z

Question 17

How should a firefighter proceed when the fire and heat is

driving toward him on the roof?

Answer 17

Crawl

Question 18

Which of the following is better indicator of where the

fire is located below the roof?

Answer 18

Fire

Question 19

What can cooling the metal deck roof’s ceiling help

prevent?

Answer 19

Metal deck roof fire

Question 20

How wide are the Insulpan panels generally?

Answer 20

8 feet

Question 21

How far from the desired opening is the fan placed when

performing positive pressure ventilation?

Answer 21

10 feet

Question 22

Which of the following is NOT part of mechanical

ventilation?

Answer 22

Opening the roof

Question 23

What makes the truss roofs the most dangerous for

firefighters to deal with?

Answer 23

Lightweight design

Question 24

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

truss?

Answer 24

Tensile

Question 25

Which type of truss is the most deadly per incident?

Answer 25

Bowstring

Question 26

How far from the main vent hole should the trench cut be | placed?

Answer 26

20 to 25 feet

Question 27

What is one of the earliest and simplest means of | mechanical ventilation that can be performed?

Answer 27

Fog pattern

Question 28

What position should members ascending the staircase hold | their heads when a skylight will be removed?

Answer 28

Looking straight

Question 29

Which of the following would benefit from vertical | ventilation?

Answer 29

Cockloft fire

Question 30

How far apart should the cuts be made when performing a | trench cut?

Answer 30

3 feet

Question 31

How far apart are the main support beams in the old-style | roof construction?

Answer 31

16 inches

Question 32

What should be the maximum size hole cut when subdividing | the hole before starting to pull the roofing?

Answer 32

4X4 foot

Question 33

Which windows should be opened when using positive | pressure ventilation?

Answer 33

Those in the room to be vented

Question 34

How is the decking laid in relation to the bar joists in | the metal deck roof?

Answer 34

Perpendicular

Question 35

What is the last thing that should be done when venting | the old-style flat-roof?

Answer 35

Vent the roof

Question 36

How far into the member does the gusset plate penetrate?

Answer 36

1/4-inch

Question 37

How far from the intended edge of the trench should | examination holes be made?

Answer 37

5 or 6 feet

Question 38

Which type of ventilation is being performed when windows | are broken out?

Answer 38

Horizontal

Question 39

What is the most effective fog pattern used when | performing mechanical ventilation with a hoseline?

Answer 39

30 degree

Question 40

What type of ventilation is best to move cold smoke?

Answer 40

Mechanical

Question 41

What is the most common vertical artery that is | encountered in fire suppression activities?

Answer 41

Staircase

Question 42

What should be done with the soil pipes to determine if | there is a fire threat in the attic?

Answer 42

Feel them

Question 43

What is a common problem for smoke ejectors and hoselines | when performing ventilation?

Answer 43

Forced draft over embers

Question 44

How many pieces within the truss design need to fail | before the entire truss may collapse?

Answer 44

1

Question 45

Which of the following is NOT part of every truss?

Answer 45

Bowing

Question 46

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

Answer 46

6 inches

Question 47

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

Answer 47

No bounce

Question 48

How much more smoke can be moved using positive pressure | than negative pressure ventilation?

Answer 48

Two times as much

Question 49

When should windows be broken in relation to the hoseline | attack?

Answer 49

Just as it begins

Question 50

Which of the following is NOT generally a concern when | performing PPV?

Answer 50

Curtains in the area

Question 51

What type of operation is the use of trench cuts?

Answer 51

Defensive

Question 52

Which type of beam is used to ensure the floors will not | squeak, but gives without warning under fire conditions?

Answer 52

I-beam

Question 53

What is the answer when fire has taken over void spaces in | a structure?

Answer 53

Complete ventilation

Question 54

What is the maximum distance that the standard wooden beam | can be spanned?

Answer 54

25 feet

Question 55

Which type of roof has its main roof supports at the roof | level?

Answer 55

Standard flat

Question 56

Where must the firefighters enter a building when PPV is | being used?

Answer 56

Location of the fan

Question 57

What is the key to determining if ventilation is for life | or fire?

Answer 57

Timing

Question 58

Which of the following is NOT a complication presented by | the Insulpan panels?

Answer 58

Common cockloft

Question 59

Which of the following conditions yields more space to | advance a hoseline?

Answer 59

Broken window

Question 60

How wide can the metal decking be that is used to | construct metal deck roofs?

Answer 60

6 feet

Question 61

What should be the guiding force when deciding to open a | window or break it?

Answer 61

Heat

Question 62

What place in the multi-winged apartment building is the | best place to attempt to cut off the fire?

Answer 62

Throat

Question 63

What size members are used in lightweight trusses?

Answer 63

2X4

Question 64

Which location in the building is best to locate the | trench cut?

Answer 64

Narrowest

Question 65

What size hole is generally desired when venting the roof?

Answer 65

8X8 foot

Question 66

Which of the following is NOT part of mechanical | ventilation?

Answer 66

Opening the roof

Question 67

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

Answer 67

Compressive

Question 68

Which direction will fire travel the quickest in?

Answer 68

Low to high points

Question 69

What does venting for fire wait upon?

Answer 69

Resources in place for attack

Question 70

What is the most efficient distance to stand from the | opening when using a fog stream to ventilate an area?

Answer 70

6 to 8 feet

Question 71

What is probably the greatest danger to firefighters who | are participating in roof ventilation?

Answer 71

Other firefighters

Question 72

What is a common concern with all parallel chord trusses | during ventilation operations?

Answer 72

Cutting the top chord

Question 73

Which of the following would heat to its failure point the | fastest?

Answer 73

1/8-inch thick angle iron

Question 74

What should be done when a larger opening is needed in the | old-style flat-roof?

Answer 74

Extend the existing opening

Question 75

How long after exposure to significant fire does the metal | deck roof fail?

Answer 75

5 minutes

Question 76

What shape is the building with an inverted roof?

Answer 76

H

Question 77

How many men should be assigned to the rooftop of a | building with an old-style flat roof?

Answer 77

4

Question 78

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

Answer 78

2

Question 79

What was positive pressure ventilation originally tested | to reduce?

Answer 79

Stack effect

Question 80

How many main reasons are there for performing | ventilation?

Answer 80

2

Question 81

What place in the multi-winged apartment building is the | best place to attempt to cut off the fire?

Answer 81

Throat

Question 82

How long can it take for a lightweight truss ceiling to | fail?

Answer 82

Less than 10 minutes

Question 83

Which type of roof has its main roof supports at the roof | level?

Answer 83

Standard flat

Question 84

Which type of ventilation is best to perform at a mattress | fire?

Answer 84

Horizontal

Question 85

What is the natural path of the heated gases during a | fire?

Answer 85

Upward