Ventilation & Tools

Question 1

Ventilation is the:

Answer 1

planned removal of pressure, heat, smoke, and gases through predetermined paths

Question 2

How do heated gases move in a room?

Answer 2

They rise to the ceiling and spread outward

Question 3

What is the term for the main area of the fire?

Answer 3

Seat

Question 4

What type of ventilation occurs when clean air is blown into a structure to force fire gases out?

Answer 4

Positive Pressure

Question 5

Which statement about positive-pressure ventilation is correct?
A) It uses a smoke ejector to draw smoke out of a building
B) it should be used only if attack crews have access to the fire
C) It can be used only under favorable wind conditions
D) It requires the use of a built in HVAC system

Answer 5

B) it should be used only if attack crews have access to the fire

Question 6

Which term means the spread of a fire from one floor to another via exterior windows?

Answer 6

Leap-frogging

Question 7

Which type of construction technique builds one floor at a time with a firestop between each floor?

Answer 7

Platform Frame

Question 8

What does fast moving smoke indicate?

Answer 8

Very hot fire

Question 9

Which type of ventilation uses openings in roofs or floors so that heat and smoke can escape the structure in an upward direction?

Answer 9

Vertical

Question 10

For natural ventilation, which windows should be opened last?

Answer 10

Leeward Windows

Question 11

How do Thermopane windows affect fire behavior?

Answer 11

Allow for faster heat build up within the structure

Question 12

A problem with using doorways as ventilation openings is that ___.

Answer 12

this technique compromises personnel entry and exit

Question 13

How can churning be eliminated during smoke ejection?

Answer 13

Completely block the opening around the fan

Question 14

Where is water directed during hydraulic ventilation?

Answer 14

Out a window or door

Question 15

What is the greatest danger to fire fighters performing vertical ventilation?

Answer 15

Roof collapse

Question 16

Which structural component is composed of relatively small and lightweight components arranged in a series of triangles?

Answer 16

Truss

Question 17

What is the term for an open space within a wall where wires and pipes run?

Answer 17

Chase

Question 18

In which construction type are there uninterrupted channels in the walls from the foundation to attic?

Answer 18

Balloon Frame

Question 19

Which hazard is of particular concern in a basement fire?

Answer 19

Smoke and heat venting up the stairs toward the fire fighters

Question 20

All forms of ventilation that use fans or other powered equipment are classified as ___ ventilation.

Answer 20

Mechanical

Question 21

Which type of roof opening extends all the way across the roof from one exterior wall to the other by creating a large opening ahead of the fire?

Answer 21

Trench

Question 22

Which item is used in negative-pressure ventilation?

Answer 22

Smoke Ejector

Question 23

Which statement about hydraulic ventilation is correct?
A) A medium-diameter line is required
B) A straight or solid stream is used
C) The ventilation crew is not exposed to products of combustion
D) Hydraulic ventilation effectively moves large volumes of heat and smoke

Answer 23

D) Hydraulic ventilation effectively moves large volumes of heat and smoke

Question 24

Which of the following best describes a recommended procedure for horizontal ventilation of a building?
A) Open the lower windows on the leeward side first, allowing heated gases to escape, then open the upper windows on the windward side
B) Open the upper windows on the leeward side first, allowing heated gases to escape, then open the lower windows on the windward side
C) Open the lower windows on the windward side first, allowing fresh air to enter, then open the upper windows on the leeward side
D) Open the upper windows on the windward side first, allowing fresh air to enter, then open the lower windows on the leeward side.

Answer 24

B) Open the upper windows on the leeward side first, allowing heated gases to escape, then open the lower windows on the windward side

Question 25

Which statement about the use of existing roof openings for vertical ventilation is correct?
A) Existing roof openings are generally impractical to force open
B) Existing roof openings should be used whenever possible
C) No additional openings should be cut in a roof that has pre-existing openings
D) Existing roof openings are generally too small to be useful

Answer 25

B) Existing roof openings should be used whenever possible

Question 26

Which form of ventilation is best for potential backdraft conditions?

Answer 26

Vertical

Question 27

Directing fire streams into ventilation openings can ___ the ventilation process.

Answer 27

Defeat

Question 28

Smoke produced by a small fire involving ordinary combustibles is ___.

Answer 28

light colored and lazy

Question 29

What is the minimum measurement for a ventilation opening cut into a roof?

Answer 29

4 ft. x 4 ft.

Question 30

What is the correct procedure when cutting a ventilation opening in a roof?

Answer 30

Rock the saw over, rather than through, structural supports

Question 31

When opening a roof, stand ___ the cut.

Answer 31

on the windward side

Question 32

When performing roof ventilation, the primary hole should be cut:

Answer 32

directly over the fire, if possible

Question 33

When ventilating the basement, where is the preferred location to ventilate?

Answer 33

The point farthest away from the entrance used by the fire attack crew

Question 34

What is the preferred method to ventilate a large building?

Answer 34

Individual ventilation of interior compartments

Question 35

What is the easiest, quickest way to ventilate interior spaces in a building?

Answer 35

Open interior doors