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Handbook Of Tactics > Ch 9 Ventilation > Flashcards

Ch 9 Ventilation Flashcards

1
Q

What does ventilation mean? pg 230

A

As the process of removing the toxic products of combustion and replacing them with fresh air.

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2
Q

What are the two main reasons for performing ventilation? Pg 230

A

Venting for fire and venting for life

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3
Q

The venting of windows is called what? Pg 234

A

Horizontal ventilation

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4
Q

Ventilation of roof and topside is called what? Pg 234

A

Vertical ventilation

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5
Q

What is considered mechanical ventilation? Pg 234

A

Opening windows

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6
Q

What is considered natural ventilation? Pg 240

A

Opening doors, windows, or skylight

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7
Q

What is considered mechanical ventilation? Pg 240

A

Involves hose lines, portable fans or building ventilation systems.

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8
Q

How do you create a Venturi effect from a window using a nozzle with a fog stream? Pg 240

A

30-35 degree pattern with a nozzle distance to window of 6-8 feet optimum

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9
Q

What does churning mean? Pg 241

A

Results in some air from the outside being drawn into the building around the side of the fan, only to be blown out again through the fan

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10
Q

positive pressure ventilation fan is set up how many feet from the desired opening? Pg 242

A

8-12 feet away

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11
Q

What is a mushroom effect? Pg 244

A

When restrained from rising, it spreads out horizontally and then starts to bank down.

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12
Q

What is considered total ventilation? Pg 247

A

Includes venting all windows and other horizontal openings as well as roof ventilation.

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13
Q

What are the two old style flat roofs? Pg 247

A

Standard flat roof and inverted roof

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14
Q

What is considered a standard flat roof? Pg 247

A

Where the main roof joist are right at the roof level and with the roof boards nailed directly to the joist.

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15
Q

What is a inverted roof? Pg 247

A

Where the roof boards are nailed to a framework of 2x4s raised several feet above the main roof joist.

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16
Q

What is a kerf cut? Pg 250

A

Triangular opening or a short narrow slit that is only the width of the blade or chain

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17
Q

What are insulspan panels? Pg 256

A

Are made of styrofoam insulation sandwiched between two layers of oriented strand board, creating a very effective insulating material.

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18
Q

What is a trench cut? Pg 257

A

Is a specialized cut used to create a firebreak along the surface of the roof

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19
Q

One hand line for every how many feet of trench should be positioned on the roof on the safe side of the trench? Pg 261

A

15-20 feet

20
Q

Never allow a spinning blade or chain to get more than how many inches above the roof? Pg 262

A

6 inches

21
Q

What should be your guide when deciding to break or open a window for ventilation from the inside? p. 234

A

Heat

22
Q

What should be vented first when you encounter a flat roof building? p. 249

A

Stairs and windows

23
Q

From which location must firefighters enter the building when PPV is being used? p. 243

A

Location of the fan

24
Q

How must the fire be reached if it has entered the second cockloft when a rain roof is present? p. 256

A

From above

25
Q

Which apartment should be forced when creating an area of refuge during a fire incident? p. 233

A

One on the same side of the hall as the fire apartment

26
Q

What material is sandwiched in the center of the Insulpan panels? p. 256

A

Styrofoam

27
Q

What material is sandwiched in the center of the Insulpan panels? p. 256

A

Styrofoam

28
Q

What is probably the greatest danger to firefighters engaged in roof ventilation? p. 261

A

Fellow firefighters

29
Q

Who serves as the eyes and ears of the Incident Commander? p. 263

A

Roof team

30
Q

How much of the window opening does “textbook ventilation” of double hung windows create during ventilation? p. 231

A

One-half

31
Q

What was used to create the pitch of the inverted roof? p. 254

A

Upright posts

32
Q

What is the minimum size team that is needed when you encounter a working fire on the top floor of any
large-area flat-roof building? p. 248

A

Four

33
Q

What must be done to make operating in a building with fire in the void spaces more doable? p. 247

A

Total ventilation

34
Q

At what angle do the 2X4s in the inverted roof join the top plate? p. 255

A

90

35
Q

What is the minimum width that the trench cut should be made? p. 259

A

3 feet

36
Q

How are the rows of uprights typically spaced on the inverted roof? p. 254

A

4 ft on center

37
Q

What is the best tool to use when breaching the glazed windows? p. 238

A

Circular saw

38
Q

How should the flat roof NOT be accessed? p. 249

A

Interior stairs

39
Q

Generally, what must be coupled with horizontal ventilation for a life hazard?
p. 234

A

Rescue effort

40
Q

What can be used to determine the location of pipe chases in a structure?
p. 246

A

Soil pipes on the roof

41
Q

What is most efficient way to prevent the horizontal spread of heated gas during a fire? p. 244

A

Vertical ventilation

42
Q

What is the key factor when distinguishing between venting
for life and venting for fire? p. 231

A

Timing of the ventilation

43
Q

Which weather condition is particularly important to consider when deciding between horizontal and vertical ventilation? p. 238

A

Wind

44
Q

What maximum size should each area be cut when making an 8X8 foot hole in the roof for ventilation? p. 251

A

4X4 foot

45
Q

What is best suited for cutting the Insulpan panels? p. 257

A

Chainsaw

46
Q

What size hole should result when creating an inspection hole in the roof? p. 250

A

8- to 10-inch

Handbook Of Tactics (22 decks)

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