Ch 13 Below-Grade Fires: Basements and Subbasements, Cellars and Subcellars and Crawl Spaces Flashcards
A basement is an area that has at least how many percent of its height above the adjacent grade? Pg 349
50%
A cellar is an area that has more than how many percent of its height below the adjacent grade? Pg 349
50%
What are among the last resort devices for applying water where entrance to an area is impossible or impractical? Pg 366
Cellar nozzles and distributors
Which cellar pipe only applies water in one or two directions at a time? Pg 368
Baker pipes
The baker pipe can reach how many feet? Pg 368
50 ft or more
The desman distributor have a very limited range with a radius of how many feet? Pg 368
15-20 feet
The 2 1/2 inch version of the Bresnan flows how much when supplies at 100 psi? Pg 368
500 gpm
What is considered a serious threat to firefighters? Pg 374
Occurs when masonry floors are placed over wooden floor joist.
Is a type of decorative concrete in which polished marble chips are the aggregate? Pg 375
Terrazzo
Are set on a base of concrete known as mud? Pg 375
Tile floors
Concrete acts as a shield to the steel in the event of fire, since steel rapidly loses its strength when it is exposed to high temperatures which is known for as what? Pg 375
Reinforced concrete
In which type of fire is communication and coordination more critical to firefighter safety? p. 358
Below grade
How many stairways are usually found in commercial cellars? p. 373
One
What is the shortest fall you could suffer if you step into an elevator shaft that was concealed by a sidewalk grate? p. 363
One floor
What flow can be achieved by a cellar pipe with two opposing 1-inch tips?
p. 368
420 gpm
Which is NOT commonly an indicator of a potential below-grade fire? p. 357
Darkened/soot-covered windows
Where is the fire channeled by the open joist ceiling in a basement or cellar? p. 350
Side walls
Which is NOT a correct statement about entering an area with high-expansion foam? p. 370
TICs can be used to navigate through the foam
With what height building can it be assumed that it is fire-resistive?
p. 377
75 feet
During below-grade fires, who should all ventilation be coordinated with?
p. 359
Hoselines applying water to the seat of the fire
What should be done if a slide/chute is present on a stairway leading into a basement in a commercial building?
p. 362
Secure it
What number of hoselines should be stretched when responding to a vehicle fire in a basement garage?
p. 366
Three
What should be done if the rear of a building built on grade cannot be reached during the 360^ survey?
p. 357
Look from the sides
What event must happen before the backup line can stop following the first hoseline into a below-grade fire location? p. 364
Fire knockdown
What should the initial attempt to force an exterior sidewalk door involve? p. 362
Cut down the seam between the two halves
What worsens the chimney effect of fires in below-grade locations? p. 353
Ventilation above the seat of the fire
Which is a last resort tactic that can be used at the below-grade fire? p. 366
Cellar nozzle
- What is the first thing that should be done when a hole has been discovered in the flooring? p. 352
Advise command
Where should the second line be stretched if the first line will be stretched to an exterior entryway of a
cellar? p. 365
First floor near the interior stairway
When should the water be started when lowering a distributor into the cellar fire location? p. 368
When it clears the underside of the floor joists
At least what height of the subbasement is above the
nearby grade when the building is built on grade? p. 353
50%
What amount of time should be allowed to pass before reevaluating the effectiveness of cellar nozzle operations? p. 367
One minute
What should be done to determine if the floor will hold your weight when dealing with a fire in a basement or
cellar? p. 352
Strike the floor with a tool
Where is the locking device normally located on an exterior sidewalk door leading to the cellar? p. 362
Near the building wall
If a hoseline will be operated within the high-expansion foam, where should it be directed? p. 371
Ceiling level
Where are the windows generally located in the cellar? p. 350
Near the ceiling
At least what area of a basement’s height is above the adjacent grade? Pg 349
50%
