Ch 18 High-Rise Buildings Flashcards
What is a Euler’s Law Column? Pg 456
Columns that are supported at their sides can carry only a fraction of the weight they can carry when attached at regular intervals.
What are fire towers? Pg 458
Are stairways enclosed in a 4 hour fire wall and separated from the floor area by two fire related doors separated by a landing that is open to the outside air or a smoke removal shaft.
What is stack effect? Pg 461
Is the natural movement of air within a building. Becomes noticeable in buildings more than 60 ft high.
What is mushrooming? Pg 462
Smoke from the original fire area rises up the stairs to the upper floors, and then spreads out through the structure.
What is normal stack effect? Pg 462
Outside air temperature cooler than inside temperature.
What is reverse stack effect? Pg 462
Outside air temperature greater than inside temperature.
What is stratification? Pg 463
When the temperature of the smoke produced isn’t sufficient to cause it to rise to the top of the building.
What is reflex time? Pg 466
Is the total time elapsed from the receipt of the alarm until an effective stream is flowing on the fire.
A class a pumped is rated to deliver what? Pg 470
One half of its capacity at 250 psi.
What is a concrete core cutter? Pg 472
Is a diamond tipped drill used in high rise construction to bore holes up to 8 in.
What is an access stair? Pg 474
Unprotected stairway leading from floor to floor within a single tenant occupancy.
The forward staging area should be set up where? Pg 479
Three floors below the fire
The staging area should maintain a reserve force of at least what? Pg 479
At least 2 attack teams and 2 support teams of at least 3 members each, equipped for forcible entry and overhaul.
At what minimum distance should a fire line be set up in all directions at a serious fire in a high-rise building? p. 465
One block
To which floor should elevators be sent when gaining control of the high-rise building’s systems? p. 450
Lobby
In what approximate amount of time can a 6-inch reinforced concrete floor be penetrated with the core drill?
p. 473
5 minutes
How does the firefighter get to the roof of most high-rise buildings to perform ventilation? p. 462
Walk up
What is usually the minimum number of ladder company personnel that need to be on the fire floor of the
high-rise? p. 470
2
Which type of high-rise buildings were involved in the events on September 11? p. 452
Lightweight Class 1
What should be pressed immediately upon entering the elevator car? p. 468
Call cancel
At what angle does the lightweight master stream device tend to kickback enough to need to be anchored? p. 471
15- 20 degrees
If the fire is within what number of floors of the elevator lobby or sky lobby should the firefighters walk
up? p. 468
8
What is the preferred hoseline to battle a fire in a high-rise where the floor is spacious and open at the
ceiling with partitions at the floor level? p. 470
2 1/2-inch line with a 1 1/4-inch solid tip
Which device can be used to increase the success of radio usage in the high-rise building? p. 478
Post Radio
To what value was the required supply by a standpipe lowered in the 1993 revision of NFPA 14? p. 472
1250 GPM
Which life-threatening injuries should you expect to see the most on the upper floors during a high-rise incident? p. 480
Cardiac
What is likely to happen to the smoke when a ventilation opening is made if the fire is on an upper floor and the
outside temperature is high? p. 465-466
Go into the building
How are the exit staircases in most modern high-rises placed in the building? p. 457
Central core area
How many floors below the fire may firefighters take an elevator when performing rooftop ventilation?
p. 462
2
How many lines were found to provide a better flow 20 stories above grade when operating from standpipe? p. 471
2
How frequently should you conduct a precautionary stop the elevator car during the ascent? p. 469
Every 5 floors
Which building was able to withstand fire that burned out of control for more than 24 hours? p. 456
90 West Street
How many members for every two floors above grade to the fire will generally be assigned when a stairwell support team is needed during the high-rise operation? p. 479
One
What is the most important prewar high-rise building feature regarding fire spread? p. 457
Absence of central air-conditioning systems that serve more than one floor
What is one of the operations officer’s primary duties at the high-rise fire?
p. 478
Keeping the hose lines moving forward
Which is a correct statement about the conditions present for reverse stack effect to occur in a high-rise?
p. 463
Outside air temperature is greater than inside air temperature
What happens when the elevator’s inside door is forced while the car is moving? p. 469
Stops the elevator
Who is responsible for maintaining the resources needed to keep the attack moving during a high-rise fire?
p. 479
Staging area officer
What is the first step taken in a controlled evacuation of the high-rise building? p. 449
Evacuate those in immediate danger
What is the greatest danger when using an elevator during a fire in the high-rise building? p. 466
Doors opening on the fire floor
Where should the command post be established when possible at a high-rise fire? p. 476
Lobby
