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Jib offset is the jib angle to the
Boom
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All Hazards and problems that are found on the worksite should be identified
At the pre-operational worksite inspection
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Which of the following OSHA regulations govern suspended personnel platforms
OSHA 1926.550(g)
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According to ASME B30.5 the prohibited zone for powerlines that are 60kV is
15ft
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What percentage of gross capacity is used when lifting with more than one crane
75%
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You are required to pass a physical exam every how many years according to ASME b30.5
3 Years
-
How many broken wires at an end socket of a standing wire rope are allowed before the rope must be replaced
1
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When operating a mobile crane, you inspect you running wire rope at least
Daily
-
When lifting a load with more than one crane, it is important to
Keep the hoist lines of both cranes vertical
-
Rotation resistant wire rope has a design factor of
5 to 1
-
Line pull is
The amount of weight a drum will hoist for a given layer
-
Boom length is
Center of the foot pins to the center of the head sheave pins
-
The weight of the stowed jib used in the load calculation is
Effective weight
-
A cranes rated capacity is based on
Structural and stability
-
When lifting a suspended personnel platform the safety factor for the rigging hardware is
5 times the intended load
-
If using cranes of different rated capacities, the crane with the larger rated capacity
Should be hooked a distance closer to the loads center of gravity
-
Hoist ropes that are not rotation resistant must have a design factor of
3.5 to 1
-
Backward stability on R/T crane could be a problem with the crane is working
Over the side at minimum radius
-
It is important to inspect rotation resistant wire rope more frequently because
Internal damage will occur more frequently
-
It is important to know when lubricating wire rope, that the lubricant must
Not hinder visual inspection
-
Breaking strength divided by the design factor equals
Safe Working Load
-
Electrocution occurs when
Crane is in contact with powerlines and personnel are in contact with the crane and ground
-
If determining boom tip elevation is important the best way to determine this is to
Use range diagram
-
When determining what position to dog the machine over night and high winds are expected
Follow the manufacturers recommendations
-
When crane is in transit and you are required to pass under 50kV powerlines what is OSHA's minimum required clearance
4 feet
-
Timber mats work best when they are
Bolted together
-
The only time an employer may use a suspended personnel platform is when
There is no safer way
-
What is the greatest cause of ground personnel deaths
Electrocution
-
When lifting a suspended personnel platform the crane must be de-rated by
50%
-
Boom deflection will
Increase load radius
-
Increasing the distance from the cranes center of gravity and the tipping axis will
Increase stability
-
The effect of a loads leverage being greater than the cranes leverage is
Instability
-
Blocking under the outrigger pads/ float shall be
Sufficient to support the crane and the load
-
With a pick and carry operation, the rated tipping capacity is based on what percentage of the total tipping capacity
75%
-
All telescopic boom cranes must be equipped with
Boom angle indicators
-
A cranes ground pressure can approach a weight that is
100% of the weight of the crane and the suspended load
-
Operating a crane with a long boom, on uneven ground, you should
Block under the pad and keep a 90 degree angle between the cylinder rod and the pad
-
On a hydraulic truck crane that has all five outriggers properly positioned on firm supporting surfaces, the working area diagram from the load capacity chart will indicate that the "over the front" area is
Different depending on the cranes manufacturers definitions and determination
-
An operator performing a pick and carry operation with a rough terrain crane should keep the load
Positioned over the front of the carrier
-
When a cranes hydraulic boom sections are required to be extended equally and they are not the
Longest section can be damaged
-
A telescopic crane is going to lift a personnel platform, what is required
Boom length indicator
-
Before making a near capacity lift with a crane, the operator must
Test the hoist brakes by lifting the load a few inches and holding it
-
A stationary load is
Static
-
When operating a R/T and extending the outriggers from the upper you should
Make visual contact or post a signal person
-
The effective weight of the fly/ jib when erected from the stowed position
Increases
-
When swinging the load of any crane on crawlers, it will exert the most ground pressure over the
Corner
-
How does the effective weight of the stowed job/ extension relate to the actual weight of the jib/ extension
Lower than the actual weight
-
When testing a man basket the operator must load the basket to 125% of its rated capacity and hold it for
5 minutes
-
The ASME volume for slings is
B30.9
-
When operating a crane on a barge the list chart must be provided by
The manufacturer
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