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After raising, rotating, and extending the aerial device you may then lower it into position. When lowering the aerial device to the desired work position, what are the guidlines to follow?
Position the aerial device about 4 to 6 inches above the surface of the objective (roofline, windowsill etc.) and allow it to settle onto the surface from the weight of the firefighters climbing the aerial device.
When deploying an aerial device, what order should the device movements be made in?
Elevate, Rotate, Extend, then Lower
Before lowering an aerial device, what should be done in order to properly drain the waterway system?
Open both ends of the system (the nozzle and the intake valve). At least one end of the system should remain open during the lowering process to avoid air from becoming pressurized within the system.
When preparing to lower an aerial device, what step should be performed just prior to retracting the device?
In order to avoid damage to the tip of the ladder or the platform, the aerial device should be raised slightly from its working position to ensure clearance.
When preparing to lower an aerial device that is equiped with a piped waterway system, after rotating the device to where it is directly above the travel cradle, what should you make sure is done before proceeding to lower the device?
Make sure that the nozzle is in the stowed position.
Aerial ladders built since 1991 are required to safely support a minimum load of how many pounds?
250 pounds
If you can see large tree branches in motion, and you can hear wind whistling through utility wires - what is the estimated wind speed?
25-31 mph
If you witness whole trees in motion, and can feel an inconvenience walking against the wind - what is the estimated wind speed?
32-38 mph
If twigs are breaking off trees, and walking against the wind is generally impeded - what is the estimated wind speed?
39-54 mph
Most aerial device manufacturers allow for full operations in winds of up to how fast?
Up to 35 or 40 miles per hour.
When should guy ropes be used?
Only on older apparatus when it is necessary to extend the ladder 75 feet or more, and only when specifically approved by the manufacturer.
Where should guy ropes be attached?
To the top end of the fly section.
What does \"shrugging off ice\" refer to, and how is it done?
A method to remove built up ice from the aerial by slowly extending and retracting the device.
If shrugging off is not effective, what are some other methods that can be used achieve the same result?
Using high-pressure steam or liquid thawing agents similar to those used on aircraft.
If the aerial device becomes exposed to extreme heat, and it cannot be moved immediately, what can be done to help keep it cool?
Protective water hose streams should be played on the device to keep it cool.
What should be done if heat damage to the aerial device is noted, or even suspected?
The aerial device should be removed from service immediately.
What are some of the obvious signs of heat damage to an aerial device?
Discoloration, disfiguration, deformed welds, or improper operation of any portion of the aerial device.
How long can the auxiliary hydraulic pump be operated before needing a period of rest, and how long should the rest period be?
Operated this pump for one minute intervals, followed by one minute of rest.
Are ladders strongest when the load is applied perpendicular or laterall to the rungs?
The rated capacity of an aerial platform is the safe carrying capacity in what position?
In ANY position.
Should the weight of equipment that is mounted in the aerial platform be added or subtracted from the rated capacity of the platform?
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