Pump Ops Chpt 17 Flashcards Preview

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Flashcards in Pump Ops Chpt 17 Deck (26):

If the fire building is less than five stories, engine companies should park on the side of the street _______ and aerial apparatus should park outside of the engine

Closest to the building


If the building is greater than five stories the engines take the outside position and the aerials park ________

Next to the building


For any given situation, the proper distance between the objective and the aerial apparatus is the distance that affords the maximum _______, the best _______, and adequate______.

Stability, Climbing angle and extension


Long extensions at low angles place the maximum amount of _____ on an aerial device, and on some cases reduce its load carrying capacity



If the building has been exposed to severe fire conditions or has otherwise been weakened , it is not advisable to park within the buildings _______

Collapse zone


Refers to positioning the apparatus in a location that provides the upmost efficiency for operation on the fire ground



Maybe created by underground parking structures, utility chases, drainage culvert, basements that extend under sidewalks, or underground transportation systems.

Vaulted surfaces


The most common spotting consideration in cold weather is the presence of ______ on the parking surface

Ice or snow


The primary spotting consideration associated with hot weather is that ________may tend to weaken marginal or otherwise firm paved surfaces

Extreme heat


Moderate to high winds impose a ______ on the aerial device and may reduce the overall stability by forcing movement for which the apparatus was not designed

Dynamic load


When it is necessary to operate during high wind conditions, the driver operator should spot the apparatus in a manner that minimizes the

Extension needed


The aerial device may also be positioned over the front or rear of the apparatus, preferably ______ to wind direction



The long standing fire service Standard has been to provide 10 feet of clearance between the aerial device and overhead high-voltage lines energized from 600 to 50,000 Volts and _____of clearance for high-voltage transmissions lines over 50,000 volts

50 ft


The apparatus is most stable when the aerial device is operated directly over the ______ of the vehicle

Front or rear


For rear mounted aerial devices, ___________ is the preferred method, as this maximizes the reach of the aerial device, as opposed to nosing in the apparatus, which would shorten the possible reach by a distance equal to the length of the apparatus

Backing in the apparatus


Tillered aerial apparatus may be positioned to increase stability by _____ the apparatus

Jack knifing


Greatest stability occurs when this angle is approximately ____ from in-line and the aerial device is extended away from this angle

60 degrees


Good stability occurs at angles up to ____

90 degrees


Are those factors that work against the aerial devices strength



When approaching the uphill side, the apparatus should park past the building, and operate the aerial device from the ____

Rear of the truck


When approaching from the downhill side apparatus should be stopped short of the building and the aerial should be operated ______

Over the cab


The maximum loading for any unsupported aerial device occurs when operating at angles between ______from horizontal

70 to 80 degrees


Aerials operating at a low angle of elevation and at a long extension are at their ______

Weakest operational position


Perhaps more dangerous than falling debris, ________may pose a greater hazard to firefighters and apparatus on the fire ground

Structural collapse


_______ is the reason apparatus should not be parked in the collapse zone

Building instability


Positioning the aerial apparatus To attack fires or protect exposures in processing facilities or refineries can be an extremely challenging task. The nature of the fuels involved with these fires requires _______

Upwind positioning