Chapter 13: Vertical Ventilation

Question 1

Fire fighters should sound every route with a hand to as the events, except for Ruth’s covered with?

Answer 1

Tile or slate

Question 2

Firefighters must also be aware of the potentially dangerous levels of electrical power (up to__voltsDC, add up to 8 Amps) Inherent in a rooftop solar panels.

Answer 2

600 Volts

Question 3

Whenever five photos are on a roof, the building should be loaded on at least___side.

Answer 3

Two sides

Question 4

Firefighters to sound the roof with the________of a pike pole, rubbish work, or axe at any time they attempt access.

Answer 4

Blunt end

Question 5

The roof surface may sound stable even when?

Answer 5

The underlying structure has been weekend by the fire. This is especially true with trusses sounding alone is not a guarantee of roof stability.

Question 6

In general, the strongest points of any roof or where the roof meets the?

Answer 6

Outside walls, directly overall support, and a ridges or valleys.

Question 7

The weakest point of a roof are?

Answer 7

Between the support

Question 8

Firefighters can reduce the risk of falling into a fire we can roof by walking only?

Answer 8

Over roof supports

Question 9

Most roof assemblies employ a parallel rafter system with Rafter spaced from______inches on center, spanning the shortest distance between the structural members or bearing walls.

Answer 9

12 to 24 inches

Question 10

The safest way to cut A roof with an ax is?

Answer 10

Do you short, controlled strokes, with the ax head cutting to the side of the firefighters feet not between them.

Question 11

Five in twelve roof is the most common pitch on a residential roof in areas With____climates.

Answer 11

Mild

Question 12

A roof designed to withstand a heavy snow load may have a_______pitch.

Answer 12

Twelve in twelve (45 degree angle)

Question 13

This roof style is found on mini barns, churches, and commercial buildings with rural style construction.

Answer 13

Lantern roof

Question 14

This type of roof may be constructed wood mantle pitch trusses, which employee only a single web member.

Answer 14

Shed roof

Question 15

When venting pitched roofs, in the absence of thermal imaging camera, the first route cut should be parallel to the ridge to help identify whether_______are located.

Answer 15

Rafters

Question 16

In many areas,___rules are more common on Emerson towers in industrial buildings, multiple dwellings in apartment complexes then on single-family dwellings.

Answer 16

Flat roofs

Question 17

There is often a concealed space between a flat roof and the ceiling of the top floor below, what is this called?

Answer 17

Attic, cock cloth, call space, or interstitial space

Question 18

This roof is most common on buildings with flat or arch rules.

Answer 18

Rain roof

Question 19

This roof may present a hazard if lightweight plywood or OSB decking is used.

Answer 19

Wooden deck roof

Question 20

Because these roofs are so difficult to breach, some have built in knock out panels.

Answer 20

Concrete roof

Question 21

When cutting holes in flat roofs, Thick tar coverings may come up chainsaws, so what may be a better choice?

Answer 21

Rotary saw

Question 22

An arch rules typically arches are space at__to__foot centers.

Answer 22

16 to 20 foot

Question 23

What are the three most common types of arched roofs?

Answer 23

Bow string arches
Trussless arches
Lamella acrches

Question 24

The most common types of roof trusses are?

Answer 24

Parallel cord trusses

Pitched roof trusses

Question 25

The most common sub trait is_______, also called roofing felt.

Answer 25

Tar paper

Question 26

Skylights equipped with__________panels or ordinary window glass can act as automatic vents because the temperature of a fire will melt the plastic or caused the glass to break and fall.

Answer 26

Thermal plastic panels

Question 27

Current practice and some of the busiest and most experience truck companies in________is to leave turbine Vents alone.

Answer 27

North America

Question 28

When coming to a roof, firefighters should make the opening______or_______end at right angles to the bearing walls to increase fire fire safety and to facilitate repairs after the fire.

Answer 28

Square or rectangular

Question 29

When rolling back penalize rules, this technique we choirs____firefighters.

Answer 29

Four firefighters-Two with chainsaws in to with rubbish hooks- working in unison.

Question 30

Trench ventilation is accomplished by cutting an opening in the roof, at least_____wide

Answer 30

4 feet