Chapter 17 Flashcards
Chapter 17
For efficient and safe fire control, apparatus driver/operators must ensure that aerial apparatus are positioned for?
Maximum use and minimum stress to the aerial devices
the process of position the apparatus at an actual fire incident will be at the discretion of?
The incident commander,company officer, or the driver/operator and influence by condition at the scene
Long extensions at low angles place the maximum amount of
Stress on an aerial device
A good indicator of underground voids are
Manhole covers
By facing uphill, the angle of the turntable is decreased there by
increasing capability and stability
If the Apparatus is facing downhill the
capability of the Apparatus may be decreased
Moderate to high winds impose a
Dynamic load on the aerial device
When it is necessary to operate during High wind conditions
The driver should spot the apparatus in a manner that minimize the extension needed.
The aerial device may also be position
Over the front or rear of the Apparatus, preferably parallel to the wind direction
Keep aerial device ____clearance for High-voltage transmission lines over____
50’ 50,000
Stability of aerial apparatus can be improved by
Operating the aerial device in line with the longitude axis(apparatus body)
The Apparatus is most stable when the aerial device is
Operated directly over the front or rear of the vehicle
And angle perpendicular to the Apparatus is
The least stable position
A good Stability occurs at angles up to
90°, but decreases at angles Beyond that
Stress may be imposed in both
Static [at rest] and dynamic [in motion]operation
Stress in aerial devices is increased when the ladder rungs are operated
non-parallel to the ground or when the apparatus park on an incline and aerial device must operate off the side of the apparatus
When an apparatus must operate off an incline
The driver can reduce these stress by spotting the turntable downhill from the point of operation
When approaching from the uphill side, the Apparatus
should park pass the building and operate the aerial device from the rear of the truck
When approaching from the downhill side the Apparatus should be
stopped short of the building,and the aerial should be operated over to Cab
Ideally, the truck should be operated in the uphill position with the aerial device directly in line to reduce stress
true
The maximum loading for any unsupported aerial device occurs when operated at angles between
70° and 80° from horizontal
As extension increases,aerial loading must_____
decrease
Aerials operating at low angle of elevation and at a long extension is at their
weakest operational position
Most modern aerial devices are designed to be operated
In the unsupported position
If the manufacturer recommends that a device be operated in a support position. The load or the amount of
extension must be reduced for low angles of elevation during unnsupported operation
Some of the most dangerous scenarios face by fire fighters are operation on
Highway, interstate, turnpikes, and other busy roadways
Consider parking additional apparatus ____behind the shielding apparatus to act as an additional barrier between firefighters and the flow of traffic
150-200 feet
Most railroad companies advise that vehicles be kept at least
25 feet from the tracks when possible
Even when a traffic halt confirmation has been received
Keep the aerial device at least 25 feet above the level of the rails as an added safety (627)
To identify signs of structural collapse, an aerial device is a useful tool to obtain an overhead look at the condition of the building
true
When dispatch to an aircraft emergency landing
Stage the apparatus near the expected touchdown area.complete the response only after the aircraft has touchdown.
At the scene of aircraft incident the apparatus will be primarily used to
Transport firefighters and portable equipment as needed to upper level
Aerial apparatus are more likely to be useful at
At non-accident related fires involving large-frame aircraft
The driver should always position the Apparatus outside the dike’s walls, unless
the roadway is on top of the dike
The distance between aerial apparatus and the objective should be consistent with the
Ladder’s planned use and the conditions at the emergency scene
If the manufacturer recommends that it’s device be operated in the support position, the load or the amount of extension for the aerial device must be reduce for
angles of elevation during on supported operations
When approaching, positioning, and operating at an incident, driver should place the Apparatus in a position that
Minimize the angle and extension to which aerial device will be raised
When an apparatus must operate off an incline, driver can reduce stress by
Spotting the turntable downhill from the point of operation
For any given situation, the proper distance between the objective and aerial apparatus is
the distance that afford the maximum stability,the best climbing angle,and adequate extension
Standard operation procedures can?
PROVIDE BASIC GUIDANCE
