Structural firefighting 12 Flashcards

1
Q

He risk to firefighters and occupants increases in proportion to the ($$$$$$) and the ($$$$$$) above grade level

A

Height of the building.

Height of the fire

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2
Q

A responsibility of ($$$$$) is to control, operate, and account for all elevators.

A

Lobby control

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3
Q

The first rule of ($$$$$$) is to avoid the use of elevators unless they will substantially improve operations.

A

Elevator safety

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4
Q

Large high rise buildings, especially hospitals, often have ($$$$$). Firewalls and fire doors create a horizontal barrier to smoke and heat from the fire.

A

Building zones

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5
Q

The rules for elevator safety:

A
  1. Do not use an elevator of questionable safety or for a fire on a lower level.
  2. Never take an elevator directly to the fire floor or above.
  3. Place elevators under independent (fire department control)
  4. Control all elevator cars in multiple hoist ways.
  5. Never overcrowd elevators.
    6 wear ppe bring forcible entry tool.
  6. Send equipment rather than firefighters on elevators.
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6
Q

Fire department SOP should state that the elevator should be taken to ($$$$$) floors or more below the fire.

A

Two

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7
Q

($$$$$) are usually less safe than passenger elevators, but maybe suitable for sending equipment above without placing firefighters in the elevator car.

A

Freight elevators

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8
Q

When ascending in an elevator it is good practice to stop periodically, possibly every ($$$$) to check for smoke.

A

5

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9
Q

It is recommended that fire fighters stop the elevator ($$$$$) or more floors below the fire floor, step out into the hallway, and check the general floor arrangement to get a feel for the building layout.

A

Three

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10
Q

The ($$$$$$$) floors are generally not typical floor layouts; therefore, it is better to check an upper floor that will likely be similar to the fire floor.

A

First and second

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11
Q

($$$$$) is a procedure that is used to move supplies to the interior staging area when using elevators is not a safe option.

A

Stairway support

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12
Q

($$$$$$$) places one or more firefighters on every other floor to shuttle equipment up through the building to an internal staging area or resource floor.

A

Stairway support

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13
Q

($$$$$$) is to set up in a safe area two or more floors below the fire floor when it is impractical for firefighters to go outside at ground level to change SCBA cylinders and rest an recuperation.

A

Interior staging

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14
Q

A ($$$$$$) tactic places a great burden on the IC, as a successful outcome depends on the fire being promptly extinguished.

A

Defend in place

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15
Q

The ($$$$$) uses recorded messages to notify occupants of a fire and provides specific directions for reaching places of safe refuge within the building.

A

EVACS

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16
Q

Above the ($$$$$$) most external fire defenses are no longer effective.

A

Eight

17
Q

To improve fire stream penetration, it is necessary to move the nozzle ($$$$$) the building, thus reducing angle of deflection.

A

Further away from

18
Q

Although ceiling height of individual floors may vary in high rise buildings, a fair estimate for the floor to ceiling height is allowing for ($$$$) for the first floor and ($$$$) or more for each additional floor.

A

20’

10’

19
Q

The loss of pressure due to gravity is ($$$$$) psi per foot.

A

0.434

20
Q

High rise buildings are generally of ($$$$$$$) construction, with older buildings often being superior to newer ones in many construction features.

A

Fire resistive

21
Q

As a rule of thumb the average office building has 1 person per every ($$$$$)

A

100ft2

22
Q

The air tightness of the structure has much to do with ($$$$$) the vertical airflow caused by temperature differences within nod out side the building. The unpredictable behavior of smoke within a high rise is due in large part to stack effect.

A

Stack effect.

23
Q

The colder it is outside, and warmer it is inside, the greater the positive stack effect ($$$$$$$). Conversely, the stack effect can be negative ($$$$$$) on a warm day within an air conditioned building.

A

Upward

Downward

24
Q

The chances of smoke stratification are less on a ($$$$) day than a warm day.

A

Cold