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38 Cards in this Set

  • Front
  • Back

Hot air, smoke, and heat of gases traveling through a building via (. ). heating present the greatest

convection

smoke and heat of gases with any structure will normally travel

travel upward and then move horizontally if there is an upward obstruction and finally downward

this is the general rule behind all ventilation operations: open the fire building in such a way that all accumulations of heat and the products of combustion leave the building by natural

convection

roof ventilation is really needed in one and two-story dwelling unless

roof ventilation should always be performed when there is a working fire in a structure

when venting double hung window

Open 2/3 from the top and 1/3 from the bottom

when wind is a factor in windows are to be used for ventilation

The windows on the Leeward side should be open first followed by the opening windows on the Windward side

when the roof is open for ventilation

The windows on the top floor should be opened after the roof is opened

when windows on several stories must be opened via a fire escape or other exterior access firefighters should

begin at the top floor and work downward

in a factory building, Rosa skylights or normally located over

work areas

The least desirable way to use a skylight for ventilation is by

all of the above. you can entirely remove the skylight by lifting it off it’s opening. Remove three sides by tipping the skylight using the fourth side is a hinge. Breaking the glass or plastic in the skylight.

to ensure that firefighters do not fall through the opening created when a skylight is lifted away

lay the skylight upside down on the roof near the opening

when opening the roof for ventilation, firefighter should

keep their backs or side to the wind and wear full ppe and scba

it is best to cut a plywood roof using a

Power saw

A large single ventilation hole in the roof is preferred over several smaller holes because

it is more effective, it is safer for firefighters, it requires less cutting. the answer was all of the above

when cutting roof boards for ventilation

wait until all boards are cut before pulling up any roof boards

when venting a roof

vent as close to the hotspot as can be safely done

smoke ejector’s are generally used during

negative pressure ventilation

when using positive pressure ventilation, the pressure inside the building should be

greater than outside

when using positive pressure ventilation, the pressure inside the building should be

greater than outside

The positive pressure blower is placed

in the position that results in the most effective smoke movement

A (. ). stream is normally used for hydraulic ventilation

Fog stream

ho

uo

ventilation should begin at the same time as the initial attack or a soon after as possible when the fire is

free burning

ventilation should begin before the building is entered when the fire is

smoldering

One or two story dwellings can be adequately ventilated

horizontally through windows

to ventilate in attic fire in a two-story dwelling

Open the roof near the hotspot, remove or open windows on each end of the attic, remove built in louvers at each end of the attic, the answer is all of the above

when using an aerial ladder to gain access to the roof

several runs should extend beyond the roof

when venting in the roof

at least two firefighters should be sent to the roof

A fire has extended from the building of origin to the cockloft of an adjoining store. The proper fire attack would involve

opening the roof of the exposure, pulling the ceiling and attacking the fire from below

there is a working fire in the basement of a large structure with only one opening to the basement that is being used to attack the fire. The best venting option would be to

Open the floor between the basement and first floor directly over the fire if possible and then open all windows on the first floor.

there is a working fire in the basement of a large structure with only one opening to the basement that is being used to attack the fire. The best venting option would be to

Open the floor between the basement and first floor directly over the fire if possible and then open all windows on the first floor.

fire resistive construction

restricts fire spread, resulting extremely high temperatures in the fire area, results and heavy accumulations of smoke and fire gases.

The best way to ventilate occupied fire resistive structure is

through the windows

when venting occupied fire resistive building start

by venting the fire floor

elevator controls are

widely varied from one manufacturer to another

A lack of (. ) keeps smoldering fire from bursting into a free burning fire

oxygen

which of the following are signs of a smoldering fire

smoke is gray or yellow in color, smoke is puffing from the building, smoke is being drawn back into the building, smoke is pressurized, windows are stained brown or darkened from intense heat

when indications of the smoke and fire are visible from the exterior

vent from the highest point possible before entering the building