Aerial App Ch2-7,9 Flashcards
NFPA 1901 defines an aerial device into three basic categories
Aerial ladders, elevating platforms and water towers.
Fire apparatus collisions can be grouped into five basic causes
Improper backing, reckless driving, excessive speed, lack of skill/experience, poor vehicle design (central states).
IFSTA further breaks down aerial devices into three cars horses and five types.
Aerial ladders, elevating platforms: telescoping aerials, articulating aerials, aerial ladder platforms; water towers.
How is working height measured?
From the ground to the highest ladder ring with the ladder at maximum elevation and extension.
Minimum floor area of a platform
14square ft.
Elevating platforms must have a min load capacity of?
750lbs
Platforms 110ft or less should be raised from bed to its max elevation/extension and rotated 90 degrees in what time?
150seconds or less
Telescoping aerial platforms have two or more sections and are made of either
Box beam or tubular truss beam
Define truss as related to aerial ladder.
An assembly of bars or rods to form a rigid framework.
Hydraulic fluid is used because it is _________
And it allows force to be transmitted over a relatively large distance with little kids of power.
Practically incompressible
Normal hydraulic pressure is
850 to 3000 psi
The extension and retraction cables are usually corrosion resistant ___________ cables made with very high strength steel, called _________ and they are resistant to abrasion.
Aircraft quality, plow steel.
Detachable ladder pipes are typically limited to flows of less than
750 gpm
Because elevating platforms typically have greater load capacities than aerial ladders, the piping on these systems may be larger and flows of up to ?
2000 gpm
What is NFPA 1989?
Standard on breathing air quality for emergency services respiratory protection
Aerial apparatus inverters provide up to ______ of electric power
5000 watts or 5kW
Vehicle mounted power plants usually have ___ and ___ volt capabilities with up to _________ watts of power available
110 and 220, 12,000
________ lights usually range from 300 to 1000 watts.
Portable
Diesel exhaust can emit up to ____ harmful chemicals and compounds therefore case and Diesel engines should not be run in _______ areas for any period of time.
100, unvented
The max pressure imprinted on the tire _______ the recommended operating tire pressure. Check ______ for operating tire pressure.
Is not! , GVWR placard or tire mfg recommendation.
In general steering wheel play should be no more than _____ in either direction.
10 degrees
Personnel should wear appropriate hearing protection if any personnel will be exposed to noise levels in excess of ______
90 decibels
The ______ is the sum of the driver/operators reaction distance and vehicles braking distance.
Total stopping distance.
Reaction distance can be affected by what?
Drivers age, aptitude, emotions, fatigue, ingested intoxicating substances.
Momentum is?
The velocity of the vehicle multiplied by its mass.
p=v*m
It takes _______ more distance for a vehicle to come to a complete stop on snow and ice than it does on dry concrete.
3 to 15 times
Four main tactical uses for any aerial device:
Rescue, access to upper levels, ventilation, fire suppression.
Jackknifing
Greatest stability occurs when this angle is approximately ______ from inline and the aerial device is extended________ from this angle.
60 deg, away
When an apparatus must operate off an incline, spotting the turntable ________ from the point of operation will reduce stress.
Downhill
Building collapse zone is equal to _______ building height
1 1/2 times
The two ways s truck can be uneven are laterlh and longitudinally. Of the two, the easiest to correct is?
Lateral unevenness.
