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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 |
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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 |
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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 |
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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 |
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when venting double hung window |
Open 2/3 from the top and 1/3 from the bottom |
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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 |
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when the roof is open for ventilation |
The windows on the top floor should be opened after the roof is opened |
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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 |
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in a factory building, Rosa skylights or normally located over |
work areas |
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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. |
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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 |
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when opening the roof for ventilation, firefighter should |
keep their backs or side to the wind and wear full ppe and scba |
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it is best to cut a plywood roof using a |
Power saw |
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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 |
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when cutting roof boards for ventilation |
wait until all boards are cut before pulling up any roof boards |
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when venting a roof |
vent as close to the hotspot as can be safely done |
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smoke ejector’s are generally used during |
negative pressure ventilation |
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when using positive pressure ventilation, the pressure inside the building should be |
greater than outside |
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when using positive pressure ventilation, the pressure inside the building should be |
greater than outside |
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The positive pressure blower is placed |
in the position that results in the most effective smoke movement |
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A (. ). stream is normally used for hydraulic ventilation |
Fog stream |
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ho |
uo |
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ventilation should begin at the same time as the initial attack or a soon after as possible when the fire is |
free burning |
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ventilation should begin before the building is entered when the fire is |
smoldering |
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One or two story dwellings can be adequately ventilated |
horizontally through windows |
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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 |
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when using an aerial ladder to gain access to the roof |
several runs should extend beyond the roof |
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when venting in the roof |
at least two firefighters should be sent to the roof |
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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 |
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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. |
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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. |
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fire resistive construction |
restricts fire spread, resulting extremely high temperatures in the fire area, results and heavy accumulations of smoke and fire gases. |
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The best way to ventilate occupied fire resistive structure is |
through the windows |
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when venting occupied fire resistive building start |
by venting the fire floor |
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elevator controls are |
widely varied from one manufacturer to another |
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A lack of (. ) keeps smoldering fire from bursting into a free burning fire |
oxygen |
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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 |
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when indications of the smoke and fire are visible from the exterior |
vent from the highest point possible before entering the building |