Ladder assembly Flashcards
(24 cards)
What is the aerial reach of the Pierce tiller ladder?
107’ above ground at 75° and 100’ horizontal at 0°.
What is the maximum angle the aerial can reach above horizontal?
77°.
What is the capacity of the tip of the aerial when dry?
750 lb.
What is the capacity of the tip of the aerial when wet?
500 lb.
What safety feature is designed into the tip section of the aerial?
The tip section is designed to breakaway.
What is the flow capacity of the tiller ladder?
Up to 1,000 GPM.
What types of nozzles can be used with the tiller ladder?
Automatic fog nozzle or smooth bore nozzle.
What is the discharge capability of the tiller ladder at 100 psi?
Up to 1000 GPM.
What wind speed can the nozzle operate at while discharging at 1000 GPM?
50 mph.
The Pierce tiller ladder consists of how many sections?
Four (4) sections.
The red section at the tip of the aerial consists of how many rungs?
The last 2 rungs.
What is the maximum rated capacity of the ladder piping on JFRD ladder trucks?
1,000 GPM
This applies to all ladder trucks except for tower ladders.
What is the maximum flow rating on the automatic fog nozzles on JFRD’s ladder trucks?
2,000 GPM
This is for the nozzles at the end of the ladder trucks.
What is the angle capability of the aerial when adjusting the stabilizers?
5° below horizontal
This adjustment allows for better positioning during operations.
What is the maximum angle below horizontal when manipulating stabilizers and the aerial?
15° below horizontal
This allows for improved access in certain firefighting situations.
At what angle can the nozzles be pointed upward?
30° angle
This feature aids in performing a Blitz Attack.
What is a Blitz Attack useful for?
Strip malls, store fronts, and garage doors
It is a firefighting tactic that utilizes the aerial’s capabilities.
What is the height of the aerial according to the specifications?
11 ft. 1.19 in.
What is the length of the aerial according to the specifications?
58 ft. 7.5 in.
What is the Gross Vehicle Weight Rating (GVWR) of the aerial?
73,300 lbs
This is equivalent to 36.65 tons.
What safety feature prevents the aerial from being rotated to the side when the stabilizer is not fully deployed?
Rotation interlock system
This feature enhances safety during operations.
Is it recommended to override the rotation interlock system?
No
Overriding can lead to tipping and serious injury.
What does the ladder use to restrict movement when hydraulic pressure is not present?
Holding valve cartridges and a rotational brake
What is the safety factor of the ladder based on the rated load?
2 to 1 (2:1)
This indicates the design’s reliability under load.
