Ch 18 High-Rise Buildings

Question 1

What is a Euler’s Law Column? Pg 456

Answer 1

Columns that are supported at their sides can carry only a fraction of the weight they can carry when attached at regular intervals.

Question 2

What are fire towers? Pg 458

Answer 2

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.

Question 3

What is stack effect? Pg 461

Answer 3

Is the natural movement of air within a building. Becomes noticeable in buildings more than 60 ft high.

Question 4

What is mushrooming? Pg 462

Answer 4

Smoke from the original fire area rises up the stairs to the upper floors, and then spreads out through the structure.

Question 5

What is normal stack effect? Pg 462

Answer 5

Outside air temperature cooler than inside temperature.

Question 6

What is reverse stack effect? Pg 462

Answer 6

Outside air temperature greater than inside temperature.

Question 7

What is stratification? Pg 463

Answer 7

When the temperature of the smoke produced isn’t sufficient to cause it to rise to the top of the building.

Question 8

What is reflex time? Pg 466

Answer 8

Is the total time elapsed from the receipt of the alarm until an effective stream is flowing on the fire.

Question 9

A class a pumped is rated to deliver what? Pg 470

Answer 9

One half of its capacity at 250 psi.

Question 10

What is a concrete core cutter? Pg 472

Answer 10

Is a diamond tipped drill used in high rise construction to bore holes up to 8 in.

Question 11

What is an access stair? Pg 474

Answer 11

Unprotected stairway leading from floor to floor within a single tenant occupancy.

Question 12

The forward staging area should be set up where? Pg 479

Answer 12

Three floors below the fire

Question 13

The staging area should maintain a reserve force of at least what? Pg 479

Answer 13

At least 2 attack teams and 2 support teams of at least 3 members each, equipped for forcible entry and overhaul.

Question 14

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

Answer 14

One block

Question 15

To which floor should elevators be sent when gaining control of the high-rise building’s systems? p. 450

Answer 15

Lobby

Question 16

In what approximate amount of time can a 6-inch reinforced concrete floor be penetrated with the core drill?
p. 473

Answer 16

5 minutes

Question 17

How does the firefighter get to the roof of most high-rise buildings to perform ventilation? p. 462

Answer 17

Walk up

Question 18

What is usually the minimum number of ladder company personnel that need to be on the fire floor of the
high-rise? p. 470

Answer 18

2

Question 19

Which type of high-rise buildings were involved in the events on September 11? p. 452

Answer 19

Lightweight Class 1

Question 20

What should be pressed immediately upon entering the elevator car? p. 468

Answer 20

Call cancel

Question 21

At what angle does the lightweight master stream device tend to kickback enough to need to be anchored? p. 471

Answer 21

15- 20 degrees

Question 22

If the fire is within what number of floors of the elevator lobby or sky lobby should the firefighters walk
up? p. 468

Answer 22

8

Question 23

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

Answer 23

2 1/2-inch line with a 1 1/4-inch solid tip

Question 24

Which device can be used to increase the success of radio usage in the high-rise building? p. 478

Answer 24

Post Radio

Question 25

To what value was the required supply by a standpipe lowered in the 1993 revision of NFPA 14? p. 472

Answer 25

1250 GPM

Question 26

Which life-threatening injuries should you expect to see the most on the upper floors during a high-rise incident? p. 480

Answer 26

Cardiac

Question 27

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

Answer 27

Go into the building

Question 28

How are the exit staircases in most modern high-rises placed in the building? p. 457

Answer 28

Central core area

Question 29

How many floors below the fire may firefighters take an elevator when performing rooftop ventilation? p. 462

Answer 29

2

Question 30

How many lines were found to provide a better flow 20 stories above grade when operating from standpipe? p. 471

Answer 30

2

Question 31

How frequently should you conduct a precautionary stop the elevator car during the ascent? p. 469

Answer 31

Every 5 floors

Question 32

Which building was able to withstand fire that burned out of control for more than 24 hours? p. 456

Answer 32

90 West Street

Question 33

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

Answer 33

One

Question 34

What is the most important prewar high-rise building feature regarding fire spread? p. 457

Answer 34

Absence of central air-conditioning systems that serve more than one floor

Question 35

What is one of the operations officer's primary duties at the high-rise fire? p. 478

Answer 35

Keeping the hose lines moving forward

Question 36

Which is a correct statement about the conditions present for reverse stack effect to occur in a high-rise? p. 463

Answer 36

Outside air temperature is greater than inside air temperature

Question 37

What happens when the elevator's inside door is forced while the car is moving? p. 469

Answer 37

Stops the elevator

Question 38

Who is responsible for maintaining the resources needed to keep the attack moving during a high-rise fire? p. 479

Answer 38

Staging area officer

Question 39

What is the first step taken in a controlled evacuation of the high-rise building? p. 449

Answer 39

Evacuate those in immediate danger

Question 40

What is the greatest danger when using an elevator during a fire in the high-rise building? p. 466

Answer 40

Doors opening on the fire floor

Question 41

Where should the command post be established when possible at a high-rise fire? p. 476

Answer 41

Lobby