Chapter 12: Horizontal Ventilation

Question 1

What is the most frequently use form of tactical ventilation?

Answer 1

Horizontal ventilation

Question 2

Openings in wooden or metal rollup doors are most often made with__________.

Answer 2

Rotary saws

Question 3

Fire departments also use flexible ducting that is up to__inches in diameter, and is made of smooth, translucent plastic.

Answer 3

24 inches

Question 4

Flexible ducking allows for smoke to be expelled from affecting apartment without spreading the smoke throughout the rest of the_________.

Answer 4

Structure

Question 5

Fix windows are often find by__________or casement windows or are stacked with awning or a hopper windows that can be opened.

Answer 5

Double hung

Question 6

By using______, two or more smoky doctors can be couple to ventilate smoke from basement, attic’s, suspended ceilings, and other confined spaces.

Answer 6

Flexible ducting

Question 7

Windows that are usually open and close using a small hand crank built into the frame?

Answer 7

Casement windows

Question 8

Windows that have two more sashes, one of which is fixed in the other or others are movable.

Answer 8

Horizontal sliding windows

Question 9

These windows, also known as back to the windows, maybe hinged at the top or bottom and may swing in word or outward.

Answer 9

Projected windows

Question 10

Energy efficient windows are commonly referred to as?

Answer 10

Thermal windows

Question 11

Regardless of its design or location, a door open for tactical ventilation purposes should be?

Answer 11

Blocked open, but not removed

Question 12

The most common types of exterior doors use for tactical ventilation purposes are?

Answer 12

• swinging doors
• sliding doors
• overhead type doors
• Roll up doors

Question 13

Especially constructed, tested, and approved fire rated door assembly designed and installed to prevent fire spread by automatically closing in covering a doorway in a firewall during a fire to block the spread of fire through the door opening.

Answer 13

Fire door

Question 14

From the standpoint of horizontal ventilation, the most important types of sliding doors are?

Answer 14

Exterior sliding doors and interior sliding fire doors

Question 15

The most common types of walls that firefighters may have to breach for horizontal ventilation are?

Answer 15

• Stem walls
• interior firewalls
• Exterior walls

Question 16

The_______, located between the foundation footing in the first floor, make Stan well above the ground if the building occupies a sloping site.

Answer 16

Stem wall

Question 17

Walls that are rated assemblies designed to reduce the likelihood of horizontal fire spread by compartmentalizing a building with fire resistive separations.

Answer 17

Firewalls

Question 18

Firewalls must extend the entire width of the building and, in most cases extend up to and above combustible_____.

Answer 18

Roofs

Question 19

Walls that protect the building and its contents from the elements and supports its roof structure.

Answer 19

Exterior walls

Question 20

Exterior masonry walls usually range from_____inches or more in thickness, depending upon the material used.

Answer 20

8 to 12 inches

Question 21

What does the acronym EIFS mean?

Answer 21

Exterior insulation and the finishing system

Question 22

The EIFS veneer may be as much as___foot thick.

Answer 22

One

Question 23

Important factors that must be considered an a plan for horizontal ventilation include

Answer 23

• location of the fire
• Wind direction and speed
• Location of ventilation openings

Question 24

Unprotected side the direction from which the wind is blowing.

Answer 24

Windward

Question 25

Protected side the direction opposite from which the wind is blowing.

Answer 25

Leeward

Question 26

When windows are open for tactical ventilation, the exit opening should be ______as large as the inlet opening.In other words, open the windows on the Leeward side fully in those on the Windward side about halfway.

Answer 26

Twice

Question 27

When breaking a window a fire fighter should have full protective clothing including hand and I protection, and should be?

Answer 27

Upwind and higher than the window

Question 28

Smoke ejectors are usually set up in the opening on the______side of the building.

Answer 28

Leeward

Question 29

4PPV, blowers are set up about_feet outside the point of entry into the building so the cone of air they create completely covers the inlet opening.

Answer 29

6 feet

Question 30

Compared with mechanical smoke ejecta, fog streams are capable of removing___to____times more smoke,Depending on the type and size of the nozzle, the angle of the spray pattern, and the location of the nozzle in relation to the ventelation opening.

Answer 30

Two to four times

Question 31

What are the disadvantages to hydraulic ventilation?

Answer 31

* An increase in the amount of water damage within the structure * there will be a drain on available water supply * In sub freezing temperatures additional ice may form * The nozzle operator must remain in a hostile environment * The operation may have to be interrupted each time the operator runs out of breathing air

Question 32

If I wind speeds are present, and the vertical ventilation is impractical or impossible, delaying ventilation until after the fire is control may be the only_________.

Answer 32

Available option