Ch3 Types and Construction of Aerial Fire Apparatus Flashcards
All aerial apparatus should meet the design requirements of NFPA blank
1901
General term used to describe the hydraulic aerial ladder, elevating platform, or telescoping or articulating booms attached to an automotive fire apparatus that has the means to reach at least 65 feet above grade
Aerial device
A power operated ladder that allows firefighters to easily climb and descend between the tip of the ladder and the turntable for either fire fighting or rescue operations
Aerial ladder
The fully extended length of North American-made aerial ladders ranges from?
50-135 ft
The main uses of Aerial ladders are?
Rescue, Ventilation, elevated master stream application, and gaining access to upper levels of an emergency
Also known as a tillered truck. It is equipped with steerable rear wheels on the trailer
Tractor-Drawn Apparatus
Minimum jacknife angle of a tillered truck?
30 degrees
A blank is required so that the platform’s position is horizontal to the ground at all times
platform leveling system
Require minimum square feet of an aerial platform?
14 square feet
No opening under the railing greater than blank inches on an aerial platform
24 in
A 4 inch metal plate that runs around the bottom edge of an elevated platform to prevent the firefighter’s feet from slipping off the edge of the platform.
Footplate, aka kickplate
1901 requires the curtain nozzle on the platform to provide blank gpm
75
minimum load capacity of aerial platform?
750 lb
minimum load capacity of aerial platform when waterway is charged?
500 lb
The water delivery system of an aerial platform must be atleast blank gpm?
1,000
Aerial platforms that are blank feet or shorter should be able to be raised from the bedded position to the maximum elevation and extension and be rotated 90 degrees in 150 seconds or less
110
Aerial ladder platform size?
85-110 feet
common sizes of telescopting aerial platforms?
75-100 feet
blank construction consists of four sides of steel or aluminum welded together to form a box shape with a hollow center
box-beam construction
Standard articulating platforms range from?
55-85 feet
combination aerial devices range from
90-174 feet
Water towers range in size from blank and have flows of blank gpm
50-130 feet, 1,000 - 5,000
Quints range in size from?
50-75 feet
The bottom section of the aerial ladder?
Base
Second and subsequent sections that extend beyond the base section
Fly sections
The lower chords of the aerial ladder to which the rungs, trusses, and other portions of the ladder are attached; also called beams
Base Rails
The top chords to which the opposite ends of the trussing are attached; also called the handrails
Rails
the portions that are attached between the two base rails and used as steps for personnel on the aerial ladder
rungs
Time criteria for an apparatus is based on its?
aerial ladder
positive displacement pump that imparts pressure on hydraulic oil within the hydraulic system
hydraulic pump
supplies the hydraulic fluid that is moved in and out of the system. Fluid displaced from the system flows back into the reservoir for storage before being recirculated through the system
hydraulic reservoir
hydraulic hose must be rated to withstand pressure blank times greater than normal operating pressure
4
mechanical deevice with a passageway that controls the flow of a liquid or gas
valve
Automatic valve that permits liquid flow in only one direction
Check Valve
Pressure control device designed to eliminate hazardous conditions resulting from excessive pressure by allowing this pressure to bypass to the intake side of the pump
relief valve
Valves designed to prevent unintentional or undesirable motion of an aerial device from position
counterbalance valves
the blank valve is a three-way valve that directs fluid to either the stabilizer control valves or the aerial device control valves
selector aka transfer, diverter
blank cylinders are capable of receiving oil under pressure from both sides of the piston so that force can be created in either direction
double acting
valve that controls the flow of hydraulic oooil form an aerial apparatus hydraulic system to the hydraulic cylinders
actuator valve
multidirectional valve used to control the flow of hydraulic oil through a hydraulic system
monitor valve
Type of multidirectional valve used in an aerial device hydraulic system
Stack valve
In a hydraulic cylinder, the pivoting end of the piston rod that is connected to the anchor ear by the heel pin
trunnion
normal hydraulic pressure ranges from
850-3,000 psi
what is the primary function of the turntable?
provide continuous rotation on a horizontal plane
the operator’s control pedestal usually stands?
3.5 feet
What are the two common types of pre-piped waterway systems
Bed ladder and telescoping waterway
ladders that are blank feet or shorter and equipped with a telescoping water system have piping that extends directly to the tip of the fly section
110
the minimum internal diameter of piping in a telescoping water system
4 in
Most telescoping waterway systems are capable of flows of blank gpm
1,000
Detachable ladder pipes are typically limited to flow of less than blank gpm
750
Elevating platform may provide flows up to blank gpm
2,000
blank are the most common power source used for emergency services and can be portable or fixed
generators
Inverters are capable of up to blank watts of power
5,000
portable generators are capable of blank watts of power for blank hours
10,000 watts, 10 hours
vehicle mounted generator are capable of up to blank watts
12,000
nfpa 1901 requires aerial apparatus to be equipped with multiple salvage covers and blank scoop shovels to assist with salvage and overhaul efforts
2
the practice of minimizing damage and providing customer service through effective mitigation and recoverty efforts before, during and after an incident
loss conrol
