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Flashcards in 17. Positioning aerial apparatus Deck (9)
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1

If the building is greater than five stories

The engine takes the outside position and Ariel parks next to the building

2

Places the maximum amount of stress on an aerial device and in some cases reduce its load carrying capacity

Long extensions in low angles

3

Electricity will Arc cross a gap as large as __ft

10 ft

4

$$$

The long-standing fire service standard has been to provide __ feet of clearance between the aerial device and overhead high-voltage lines energized from 600 to 50,000 V and __ feet of clearance for a high voltage transmission lines over 50,000 V

10 ft

50 ft

5

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

Front of rear

6

Jackknifing

Greatest ability occurs when this angle is approximately __° from in line and the aerial device is extended away from this angle.

60°

Good stability occurs at angles up to 90°

7

Ideally, the truck should be operated in the ___ position with the aerial device directly in line to reduce stress

Uphill

8

The maximum loading for any unsupported aerial device occurs when operated at angles between ___ from horizontal

70° and 80°

9

$$$

Most railroad companies advise that vehicles be kept at least __ feet from the tracks when possible.

25 ft



Keep the aerial device at least 25 feet above the level of the rails