Chapter 6, Positioning Aerial Apparatus Flashcards Preview

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Flashcards in Chapter 6, Positioning Aerial Apparatus Deck (27)
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1
Q

When an engine and ladder arrive on scene of a high rise fire, where is the ladder placed?

A
  • if building is less than 5 stories, ladder is positioned outside the engine
  • if building is greater than 5 stories, ladder is positioned inside the engine
2
Q

What is considered to be the proper distance between the objective and the aerial apparatus?

A

The distance that allows:

  • max stability
  • best climbing angle
  • adequate extension
3
Q

Long extensions with low angles place max stress on aerial device. How do you prevent this?

A

Get as close to object as safely possible.

4
Q

What are “stresses”, concerning the aerial device?

A

Factors that work against the strength of the aerial apparatus (can be static or dynamic; greater when dynamic).

5
Q

What are the 4 main uses for any aerial device (excluding water towers)?

A
  • rescue
  • access to upper floors
  • ventilation
  • fire suppression
6
Q

For an aerial ladder, where is the best rescue approach?

A

Upwind (apparatus should be parked so turntable is upwind of the target).

7
Q

For a rescue, why should apparatus be positioned at the corner of the building?

A
  • can reach victims on 2 sides of the building

- less vulnerable position if building collapses

8
Q

What is the hazard of using a solid stream master stream on an aerial device?

A

Straight stream could place a damaging load stress on aerial device, possibly collapsing device.

9
Q

What is the preferred master stream use, when conducting a rescue with an aerial apparatus?

A

The preferred procedure is the wide-angle fog master stream, to push heat or fire away from the aerial while the rescue is in progress.

10
Q

What is the difference in elevating platform placement during a rescue, when a victim needs to be removed from a building?

A
  • if victim is being lifted over the top rail of platform, place apparatus so that turntable is directly in-line with target
  • if victim enters platform through the gate, position turntable a little forward/behind target (gates are on sides)
11
Q

What are the benefits of positioning the aerial apparatus on the side of the building opposite the fire?

A
  • allows interior attack crews to advance hose lines toward fire from unburned side
  • ff retreating will most likely move toward the unburned side
12
Q

If the aerial device is being used to assist with ventilation on a pitched roof, how should the apparatus be positioned?

A

It should be positioned, if possible, so that ventilation can be accomplished from the platform or ladder of the aerial device.

13
Q

When providing access for ventilating a flat roof, where should the aerial device be positioned?

A

On the unburned side of the structure, as close as possible to the area being ventilated.

14
Q

How far above the roofline, should the aerial ladder extend?

A

At least 6 feet (if using platform, then platform floor should be at roof level).

15
Q

What are the 3 common uses of an aerial device for elevated master streams?

A
  • blitz attack (try to place nozzle in lower part of window)
  • defensive attack
  • exposure protection
16
Q

What are elevated streams most used for?

A

Defensive operations.

17
Q

Why should an apparatus be placed on the corners of the building, during a building fire?

A
  • decrease the chance of collapse

- decrease chance of damage due to radiant heat

18
Q

What factors should the driver consider, when determining the final operating position of the aerial apparatus?

A
  • surface conditions (soft ground)
  • weather/wind conditions
  • electrical hazards/overhead
  • angle/location of aerial device operation
  • fire building conditions
19
Q

What is a vaulted surface, and why should aerial apparatus avoid them?

A

A vaulted surface is a vault beneath the ground created by underground parking structures/drainage culverts. They are unstable for aerial apparatus.

20
Q

What is the most common spotting consideration for aerial apparatus in cold weather conditions?

A

The presence of ice/snow on parking surface.

21
Q

What does the term “ice shrugging” refer to?

A

Process used to remove accumulated ice on the aerial device (slowly extend and retract the aerial device).

22
Q

If aerial apparatus has to be raised during high winds, how should driver spot the apparatus?

A
  • where apparatus is raised to minimum extension needed

- position apparatus so aerial device is used over front or rear of device

23
Q

How far should distance be between aerial device and electric lines?

A

At least 10 feet.

24
Q

The aerial apparatus is most stable when the aerial device is operated in what position?

A

Operated directly over the front or rear of the vehicle (longitudinal axis).

25
Q

What is the least stable position for the operation of the aerial device?

A

At an angle perpendicular to the apparatus.

26
Q

For rear mounted aerial devices, why is backing the apparatus into position considered to be the preferred method?

A

It maximizes the reach of the aerial device.

27
Q

What position increases the stability of a tillered aerial apparatus?

A

Jackknifing (involves turning the tractor at an angle from the trailer; great angles are around 60 degrees, good angles are around 90 degrees).