Vent cpt 5 Flashcards

1
Q

Vertical ventilation is a ___ of ventilation that utilizes convective heat currents
and increased pressure, created by high temperatures in a structure that is on fire, to
carry smoke up and out of a structure

A

natural form

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2
Q

For the proper placement of the roof opening as close to the seat of the fire as possible,
firefighters should read the_____

A

ventilation profile, utilize a TIC, and communicate with
interior crews.

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3
Q

A door to a stairway that pierces a flat roof

A

bulkhead door

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4
Q

The puncturing of ceiling materials from above to allow smoke and heat to vertically exit a finished living space.

A

ceiling punch

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5
Q

A heavy type of roof sheathing material that is up to three
inches in thickness

A

car decking

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6
Q

The removal of heat, smoke and fire gases after
extinguishment of the fire.

A

smoke removal

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7
Q

The opening of the roof covering or existing roof openings for the purpose of
allowing the products of combustion to escape into the atmosphere

A

coordinated vertical vent

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8
Q

The direction that is downwind from the intended ventilation
point.

A

leeward side

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9
Q

Attic space between a flat roof and the ceiling joists of the living
space below

A

cockloft

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10
Q

Cuts that are made parallel to
rafters to ensure that the roof decking
within the hole spans no more than one
rafter

A

dicing

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11
Q

The process of supplying air to and removing air from
an indoor space without using mechanical systems. Horizontal and
vertical ventilation tactics used by firefighters are forms of natural
ventilation.

A

Natural ventilation

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12
Q

A three-sided diagnostic cut used to determine the type, direction, and spacing of rafters aswell as the sheathing type and thickness of the roof covering

A

inspection hole

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13
Q

Procedure for removing sheathing boards from roof framing members performed by making a quick motion upward and back toward the firefighter using a long tool.

A

J hooking

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14
Q

Smoke movement from a structure that shows flow paths of
heat and smoke out of the structure as well as air movement into the structure.

A

vent profile

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15
Q

A small, covered opening that provides access to the roof from the
interior of a building. When used for ventilation purposes, scuttles must be
evaluated to ensure they access the space intended for ventilation. (Attic or
public hallway)

A

roof scuttle

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16
Q

The roof ____ be opened until it has been visually confirmed that fire has extended to the attic or the top floor living spaces of the structure.

A

should not

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17
Q

When fighting fires in balloon frame structures, It is especially important to have ___ ready before holes are opened in the walls, ceilings, or roof.

A

hose lines

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18
Q

___ for smoke removal should not be used for in the walls of a
balloon frame structure until the fire has been completely extinguished.

A

Positive-pressure ventilation

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19
Q

An attic fire that has been ventilated and then allowed to burn unchecked due to difficulty in reaching the fire with the hose stream can result in the ____

A

catastrophic failure of the roof structure.

20
Q

The initial categorization is a starting point that must be verified through
the cutting of an ____ when the crew arrives on the roof

A

inspection hole

21
Q

As a general rule, a conventionally constructed roof structure will sustain fire involvement
for ___ before failure of the roof should be expected.

A

20 minutes

22
Q

Tongue and Groove on the roof can span up to 12 feet Providing a roof opening in this
type of structure requires a special cutting technique known as a ____cut. This method
also referred to as a “__ cut” will be discussed in the cutting techniques section.

A

7-9-8, coffin

23
Q

Due to the small surface area to mass ratio, roofs built with lightweight construction can
withstand fire involvement for only__minutes before failure of the roof structure occurs

A

five

24
Q

A lightweight roof on a residential structure poses a much greater threat to those working
__ than under it.

A

on the roof

25
Q

Lightweight construction uses ____ sheathing that
reacts differently than solid wood when subjected to heat.

A

plywood or orientated stand board (OSB)

26
Q

Small columns of smoke emanating from the decking
indicates a __ that will not support the weight of a firefighter

A

loss of integrity

27
Q

If a prolonged operation is expected, extra fuel for saws should be taken to the ___

A

roof or staged at the turntable

28
Q

___ should be used when cutting flat roofs with a heavy tar roof covering.

A

Rotary

29
Q

__ saws should also be used on roofs with a steep slope

A

Rotary

30
Q

the ____ should be used when performing vertical ventilation on a roof with a
slope greater than 8/12

A

rotary saw

31
Q

To prevent serious injury, the blade spin must be stopped by releasing the throttle and burying the blade into the roofing material ___ the blade it is removed from a cut.

A

every time

32
Q

Care should be used in selecting a ladder that will extend at least__ rungs above the eve

A

three

33
Q

If the first crew to the roof is not able to place the second ladder, they should
request the placement from__

A

RIT or the next due truck

34
Q

The 45-foot ladder carried by most truck companies is ___
capable of reaching a the roof of a four story building.

A

usually not

35
Q

Roofs with a slope greater than __ will require a roof ladder to maintain safe footing
while operating on the roof

A

8/12

36
Q

The roof ladder is intended to provide ___ and is not to be used to distribute the
weight of the ventilation team on a weakened roof

A

good footing

37
Q

One of the most hazardous parts of roof operations is____

A

transitioning from the aerial ladder onto the roof

38
Q

The first member to the roof must have a sounding tool to determine if the roof is strong
enough to support the weight of personnel before stepping onto it. The member that
sounds the roof also determines the path of travel for other firefighters. This member
should be the___

A

most experienced member of the crew.

39
Q

An inspection hole should be only big enough to gather the necessary information;
usually no larger than about ___ inches on the sides that are at right angles to each other

A

18

40
Q

A ___ is a ventilation opening placed directly over the fire, or as close to the fire as
safety allows, for the purpose of venting the products of combustion to the atmosphere

A

heat hole

41
Q

When breaching the ceiling, it is important to remember that the size of the hole in the
ceiling must be _____ the size of the hole in the roof for the opening to
be most effective.

A

equal to or greater than

42
Q

The coffin cut will create a heat hole that is up to ___
feet in size and can be easily expanded.

A

4 feet by 8

43
Q

Trench cuts can be used to cut off a rapidly extending cockloft fire at a pinch point. The
pinch point or “__” could be defined as an area where a building narrows sufficiently
to perform a successful operation before the fire can extend past that point.

A

throat

44
Q

A trench cut must be placed across the width of a flat roof to be effective, leaving only a
___ area of uncut roofing at each exterior wall for an egress path if necessary.

A

four-foot

45
Q

Glass skylight Break a single pane of glass and wait for___ seconds

A

ten