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
AOTM: Rungs are considered ______ any time they are not parallel with the horizontal plane of the earth.
Tilted
AOTM: High winds, over _____, use extra caution.
35 mph
AOTM: If the aerial is to be raised to a roof coping, extend it _______ above the wall.
Several feet
AOTM: If the aerial is to be raised to a window or fire escape balcony, raise the ladder _____ above the sill or railing.
1 foot above
AOTM: TRUE OR FALSE: Under normal conditions, when ground jacks are in place on concrete streets or blacktop, they do not provide a ground for an electrically charged apparatus.
TRUE. An exception to this is when the jacks are resting on a rail, in a puddle of water, or other similar situations.
AOTM: During high winds, 35 mph and over, use extra caution in operating the aerial. It may be advisable to attach what to the top of the fly?
It may be adviseable to attach guy ropes to the top of the fly if it is to be extended over 75 feet. Maintain tension of the guy ropes in the direction from which the wind is blowing
AOTM: During high winds, attach guy ropes to the top of the fly and maintain tension is the aerial is to be extended over _____.
Over 75 feet
AOTM: How should you use the aerial for ventilation?
Due to the possibility of ladder damage when an aerial strikes a window sill, the glass should be broken by extending the fly in to the panes rather than by dropping or lowering the ladder against the window frame.
AOTM: What is the dry foundation which can determine the effectiveness, or lack of effectiveness of an aerial ladder operation?
Proper spotting of the apparatus
AOTM: Ground jacks serve the dual purpose of what?
Of preventing tilt and relieving the tires of added weight
AOTM: Where the spot can be made next to the curb, the aerial ladder operator knows that he can operate between the ___ and ___ floors and maintain a climbing angle between ___ and ___ degrees.
Between the 5th and 8th floors; climbing angle between 70 and 80 degrees
AOTM: Where the spot can be made next to the curb, any operation below the ___ floor result in climbing angles of less than ___ degrees.
5th floor; 70 degrees
AOTM: Where the spot is made outside of the line of cars, any operation below the ___ floor will be conducted at a climbing angle of less than ___ degrees.
Below the 7th floor; less than 70 degrees
AOTM: TRUE OR FALSE: As most spots have to be made outside of the line of cars, it is not unusual to see aerial ladder operations in the downtown area conducted with climbing angles considerably less than 70 degrees.
TRUE
AOTM: What are the 5 considerations of selecting a spot that the AOTM mentions?
1) Force considerations
2) Distance considerations
3) Overhead obstructions
4) Steep inclines
5) Jackknifing
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: All ladies are stronger with load applied _________ to the rungs than when a load is applied in a sideways direction.
Perpendicular
AOTM: To compensate for excessive street grades, spot apparatus __________________.
Spot apparatus down slope for the area of operation
AOTM: What are the two reasons that when operating on a hill the operator should spot the apparatus down slope from the area of operation?
1) Rung tilt will be reduced
2) The apparatus is more stable with the ladder extended uphill than downhill
AOTM: What does the term Jack-knife mean?
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 form the direction of ladder extension
AOTM: Even when the tractor is jack-knifed as much as 30 degrees, the truck stability is more than _____ as great as when in the in-line position.
More than twice
AOTM: When should chock blocks be placed?
Chock blocks should be placed as soon as the apparatus is properly spotted
AOTM: What are the 4 suggestions mentioned for increasing the efficiency of outside drills?
1) Keep outside drills as realistic as possible
2) Make sure all participating members fully understand any simulated conditions
3) Vary practical problems to make members use their initiative
4) Hold a short critique after each problem
AOTM: Each function of operation such as hoisting, rotating, and extending should be accomplished separately until what?
Until such time as the operator becomes thoroughly familia with the various controls
AOTM: Sighting along the ladder will reveal whether or not the ladder has been elevated sufficiently. The aim should be ___________ the coping or window ledge against which the ladder is to rest.
Somewhat above
AOTM: For angles below ____, the apparatus MUST be jackknifed. (Supported operation)
Below 45 degrees
AOTM: What is the quickest method of determining maximum man-load?
Divide the horizontal distance in feet, between the base of the ladder and the building on which it rests, into 270 (ex: 270 divided by 40 (feet) equals a 6 man load)
AOTM: For angles below ____, the apparatus MUST be jackknifed. (Unsupported operation)
Below 70 degrees
AOTM: Under normal conditions, when ground jacks are in place on concrete streets or blacktop, they ______ provide a ground for an electrically charged apparatus.
The do not provide a ground. An exception to this is when the jacks are resting on a rail, in a puddle of water, or other similar situation
AOTM: TRUE OR FALSE: Windows should be broken by extending the fly into the panes rather than by dropping or lowering the ladder against the window frame.
TRUE
AOTM: ____ companies are required to place a ladder pipe into service.
Two companies. A ladder pipe will demand the total efforts of a truck and an engine company
AOTM: With most aerial trucks it is desirable to prevent ladder pipe nozzle reaction from reducing cylinder pressure to less than ____ psi.
100 psi
