Ch 13 Below-Grade Fires: Basements and Subbasements, Cellars and Subcellars and Crawl Spaces

Question 1

A basement is an area that has at least how many percent of its height above the adjacent grade? Pg 349

Answer 1

50%

Question 2

A cellar is an area that has more than how many percent of its height below the adjacent grade? Pg 349

Answer 2

50%

Question 3

What are among the last resort devices for applying water where entrance to an area is impossible or impractical? Pg 366

Answer 3

Cellar nozzles and distributors

Question 4

Which cellar pipe only applies water in one or two directions at a time? Pg 368

Answer 4

Baker pipes

Question 5

The baker pipe can reach how many feet? Pg 368

Answer 5

50 ft or more

Question 6

The desman distributor have a very limited range with a radius of how many feet? Pg 368

Answer 6

15-20 feet

Question 7

The 2 1/2 inch version of the Bresnan flows how much when supplies at 100 psi? Pg 368

Answer 7

500 gpm

Question 8

What is considered a serious threat to firefighters? Pg 374

Answer 8

Occurs when masonry floors are placed over wooden floor joist.

Question 9

Is a type of decorative concrete in which polished marble chips are the aggregate? Pg 375

Answer 9

Terrazzo

Question 10

Are set on a base of concrete known as mud? Pg 375

Answer 10

Tile floors

Question 11

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

Answer 11

Reinforced concrete

Question 12

In which type of fire is communication and coordination more critical to firefighter safety? p. 358

Answer 12

Below grade

Question 13

How many stairways are usually found in commercial cellars? p. 373

Answer 13

One

Question 14

What is the shortest fall you could suffer if you step into an elevator shaft that was concealed by a sidewalk grate? p. 363

Answer 14

One floor

Question 15

What flow can be achieved by a cellar pipe with two opposing 1-inch tips?
p. 368

Answer 15

420 gpm

Question 16

Which is NOT commonly an indicator of a potential below-grade fire? p. 357

Answer 16

Darkened/soot-covered windows

Question 17

Where is the fire channeled by the open joist ceiling in a basement or cellar? p. 350

Answer 17

Side walls

Question 18

Which is NOT a correct statement about entering an area with high-expansion foam? p. 370

Answer 18

TICs can be used to navigate through the foam

Question 19

With what height building can it be assumed that it is fire-resistive?
p. 377

Answer 19

75 feet

Question 20

During below-grade fires, who should all ventilation be coordinated with?
p. 359

Answer 20

Hoselines applying water to the seat of the fire

Question 21

What should be done if a slide/chute is present on a stairway leading into a basement in a commercial building?
p. 362

Answer 21

Secure it

Question 22

What number of hoselines should be stretched when responding to a vehicle fire in a basement garage?
p. 366

Answer 22

Three

Question 23

What should be done if the rear of a building built on grade cannot be reached during the 360^ survey?
p. 357

Answer 23

Look from the sides

Question 24

What event must happen before the backup line can stop following the first hoseline into a below-grade fire location? p. 364

Answer 24

Fire knockdown

Question 25

What should the initial attempt to force an exterior sidewalk door involve? p. 362

Answer 25

Cut down the seam between the two halves

Question 26

What worsens the chimney effect of fires in below-grade locations? p. 353

Answer 26

Ventilation above the seat of the fire

Question 27

Which is a last resort tactic that can be used at the below-grade fire? p. 366

Answer 27

Cellar nozzle

Question 28

2. What is the first thing that should be done when a hole has been discovered in the flooring? p. 352

Answer 28

Advise command

Question 29

Where should the second line be stretched if the first line will be stretched to an exterior entryway of a
cellar? p. 365

Answer 29

First floor near the interior stairway

Question 30

When should the water be started when lowering a distributor into the cellar fire location? p. 368

Answer 30

When it clears the underside of the floor joists

Question 31

At least what height of the subbasement is above the
nearby grade when the building is built on grade? p. 353

Answer 31

50%

Question 32

What amount of time should be allowed to pass before reevaluating the effectiveness of cellar nozzle operations? p. 367

Answer 32

One minute

Question 33

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

Answer 33

Strike the floor with a tool

Question 34

Where is the locking device normally located on an exterior sidewalk door leading to the cellar? p. 362

Answer 34

Near the building wall

Question 35

If a hoseline will be operated within the high-expansion foam, where should it be directed? p. 371

Answer 35

Ceiling level

Question 36

Where are the windows generally located in the cellar? p. 350

Answer 36

Near the ceiling

Question 37

At least what area of a basement’s height is above the adjacent grade? Pg 349

Answer 37

50%