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