Chapter 17 Positioning Of Aerial Apparatus Flashcards
Area beneath the wall in which the wall is likely to land if loses structural integrity.
Collapse zone
If the fire building is less than five stories the _____________should park on the side of the street closest to the building in the aerial apparatus should park on the outside of the engine.
Engine company.
If the fire building is more than five stories the engine takes the outside position in the _____ Apparatus parks next to the building
Aerial app
T or F: For any given situation, the proper distance between the objective and the aerial apparatus is a distance that affords the maximum stability, the best climbing angle, and adequate extension. The distance should be consistent with the ladders planned use and the conditions at the emergency scene.
True
This refers to the positioning of the apparatus and location that provides the upmost efficiency for operating on the fire ground.
Spotting
What are some Factors to consider when Positioning the Aerial and Apparatus on the fairgrounds.
Surface conditions
Grade
Windy conditions
Electrical hazards ground or overhead obstructions
Angle and location of Ariel device operations
Special situations
Ground above underground vaults such as underground parking structures, utility chases, drainage culvert, basements and extend under sidewalks or underground transportation system. Manhole covers are a good indicator of underground voids.
Vaulted surfaces
What are some visual indicators of compromised asphalt services due to extreme heat.
(Bleeds) creating a shiny glass like surface
Loads that involve motion. They include the forces arising from wind, moving vehicles, earthquakes, vibrations, or falling objects, as well as addition of a moving load forced to an aerial device or structure also known as shock loading.
Dynamic load
Electricity will arc across a gap as large as _______ ft and all overhead wires and cables should be considered hazardous and dangerous. The lines range from 600-50,000volts
10 feet
Do not work within ___feet of high voltage transmission lines. These are high tension wires to transport electricity over long distances.
50 feet
OSHA Recently revise her overhead powerline clearances for the construction in the tree. The new stain requires 20 feet between the device in overhead electrical lines of less than 350 kV( kilovolt). For high tension lines over 350 kV OSHA requires 50 feet of clearance.
True
Apparatus stability is greatest when the aerial device can be operated in line with the _________ ____apparatus.
Longitudinal axis
An Ariel Apparatus is less stable when the aerial device is operated ________ to the longitudinal axis of the Apparatus
Perpendicular
Condition of truck trailer semi trailer combination when their relative position to each other form an angle of 90° or less about the trailer king pen, such as turning the trailer portion of a tractor tillered Aerial and Apparatus at an angle from the trailer to increase ability with the aerial device is being used.
Jack knifing
