AOTM Flashcards
AOTM: Ground jacks service the dual purpose of ___________ and ____________.
Preventing tilt and relieving the tires of added weight
AOTM: The best climbing angles are from ___ to ___ degrees inclination from horizontal.
70 to 80 degrees. At these angels, with the top supported, the ladder will carry its maximum load
AOTM: In the downtown area the curbs are approximately _____ from the building line.
Approximately 11 feet from the building line.
AOTM: TRUE OR FALSE: It is safe to move the apparatus with the main ladder raised, but do not move with the ladder extended.
TRUE
AOTM: How can you compensate for excessive street grades?
To compensate for excessive street grades, spot the apparatus DOWN SLOPE from the area of operation. It heading downhill, it is necessary that the operator pass the spot where he intends to raise the aerial. If headed uphill, the operator should stop short of the intended point of raising the aerial
AOTM: Why should you spot the apparatus down slope from the area of operation?
There are two reasons
1) The rung tilt will be reduced
2) The apparatus is more stable with the ladder extended uphill than down. The reason for this is that the lower the hoisted angle of the ladder, the less load it will carry due to the fulcrum affect
AOTM: What is jack-knifing?
Jack-knife is a trade term, and in the fire department terminology means to turn the tractor of the truck at an angle to the trailer
AOTM: What is the ideal jack knife angle?
The ideal angle is about 60 degrees from the in-line position, and away from the direction of ladder extension
AOTM: Even when the tractor is jack-knifed as much as ____ degrees, the truck stability is more than twice as as when in the in-line position
30 degrees
AOTM: Chock blocks should be placed as soon as the apparatus is properly spotted. On level terrain, chocks should be placed where? Incline?
On level terrain, the dual wheels of the tractor on the side on which the ladder is to be raised, should be chocked at the front and rear. On an incline, place both chock blocks on the down-grade side of the rear tractor wheels
AOTM: Before leaving his seat, what should the driver do?
The driver should set the hand brake, engage the power take off to the hydraulic pump, and move the throttle control switch to the “on” position
AOTM: TRUE OR FALSE: Until such time as the operator becomes thoroughly familiar with the various controls, each function of the operation such as hoisting, rotating and extending should be accomplished separately.
TRUE. According to the AOTM, very little time is gained by hoisting and extending simultaneously because either function is slower down by adding the other
AOTM: It is best to have the ladder hoisted to at least ________ before operating other controls.
At least 45 degrees
AOTM: If the aerial is to be used unsupported, the preferred angle is ___ to ___ degrees
70 to 80 degrees
AOTM: If using the aerial for upper story window ventilation, how should you do so?
Extend the fly into the panes rather than by dropping or lowering the ladder against the window frame
AOTM: According to the AOTM, how many companies are required to place the ladder pipe into service?
Two companies are required to place a ladder pipe into service. A ladder pipe will demand the total efforts of a truck and an engine company
AOTM: What are the 5 situations to use a ladder pipe mentioned in the AOTM?
1) To attack fires in upper levels of multi-story buildings
2) As an improvised dry standpipe
3) Roof areas, that would not otherwise be accessible
4) Large open areas
5) To protect exposures
AOTM: The lines on the ladder are loaded when the angle of inclination is approximately _________.
Approximately 50 degrees
AOTM: If using an improvised ladder pipe, avoid directing a stream sideways from the aerial, as side stress may be dangerous. If more than ___________ horizontal sweep from the center is required, it is best to rotate the turntable
15 degrees
AOTM: When avoiding overhead obstructions, such as electric wires, cables, etc., it may be necessary to ________ the truck to raise the aerial.
“Jockey” the truck to raise the aerial
AOTM: Proper aerial placement for maximum stability and preferred climbing angle is a matter of what?
A matter of experience and good judgement
AOTM: Aerials are strongest with the load applied _____ to the rungs.
Perpendicular to the rungs