1-5 Ton crane Flashcards
Telescopic boom cranes manufactured after February 28, 1992 must be equipped with a device which prevents damage from contact between the traveling block/ball and the boom tip this device is called what?
Anti 2 blocking device
According to OSHA accessible areas of an operating crane must always be barricaded within?
The swing radius of the rear of the rotating substructure
When working near powerlines when is a single person required?
When the crane is within a booms length of the prohibited zone
A pre-lift meeting is an operational requirement for a suspended personal platform true or false?
True
What prohibits the boom from falling down on a hydraulic crane in the event of a hydraulic line rupture?
Load holding valve 
Only use what? grade chain for overhead lifting.
Alloy grade 8/80 or 10/100
To determine the necessary parts of line and operator would need to divide the suspended load by either the SWL/safe working load for the PLP/permissible line pull true or false?
True
SWL/safe working load of a cranes wire rope is 4000 pounds what is the safe working load of four parts of line?
16,000
When working on outriggers the only time they should be less than fully extended is when?
When there is a load chart for this configuration
An A/D director is?
A competent/qualified person,
The sole person incharge of Assembly and disassembly of the crane,
The sole person responsible for overseeing operations regarding erecting and dismantling of tower cranes 
The capacity of a choker hitch is what? percent of a vertical swing hitch.
70-80%
What is the removal criteria for IWRC running wire rope?
6 randomly distributed broken wires and one lay or 3 broken wires in one strand in one lay
Significant distortion of the wire rope structure such as, kinking, crushing, birdcages, understranding, core failure, or core protrusion are what?
Category 1 apparent deficiancies
How does the operator verify the LMI’s Bloom length or load radius reading?
Actual measurement
What does LM I stand for?
Load moment indicator
A four legged steel bridal sling has how much capacity increase of a 3 legged steel bridal sling ?
No increase
When the number of wraps on the drum increase, what happens?
Permissible line pull may decrease
What is the ANSI wear criteria standard for taking wire rope out of service
Metal loss of 1/3 of the diameter of the outside
When an operator arrives on a job site and the crane is already erected how would he test the auxiliary and main hoist brakes
Lift the load slightly off the ground, apply the brakes, see if they hold
Blocking under outrigger stabilizers must be sufficient to what?
Sustain the entire weight of the crane and it’s Maximum Load 
The term upperworks refers to what part of the crane
Above the turntable
The removal criteria for rotation resistant wire rope is what?
2 randomly distributed broken wires in 6 rope diameters or 4 randomly distributed broken wires in 30 rope diameters
When using cranes of different capacities in a two crane pick, the crane with the larger net capacity should what?
Should be hooked at a distance closer to the loads center of gravity
A positive acting anti-two block device is an operational requirement for suspended personnel platform’s true or false?
True
Electrocution warning signs should be posted where?
In the cab in view of the operator, and at least two on the outside of the equipment
The table a minimum clearance distance during operation of a crane in vicinity of a 200Kv powerline is what?
15ft
The removal criteria for a sling replacement is what?
10 randomly distributed wires in one rope lay or five broken wires in one strand in one rope lay
On duty cycle operations such as swinging concrete, steel erection, and magnet work, most crane manufacturers require a crane load chart capacity to be what?
To be reduced by 20%
The proper way to calibrate a boom angle indicator is what?
Have the machine on level ground, using a level, place the boom in a horizontal position and set the indicator to 0°
A signal person must have an understanding of what?
Equipment operations
Crane dynamics involved in swinging and stopping loads
Boom deflection
When the boom handle is released to its center position, which action should be expected?
The boom hoist will be held stationary
The WLL/working load limit at the bottom of a sorting hook is 7 1/2 tons when fully engaged, and the sling angle is less than 45°. If tip loading occurs due to a sling angle greater than 45° the WLL/weight load limit will be what?
2 tons
When performing a multiple crane lift, It is important for the operator to understand what?
The weight may increase if one crane lands the load
A trual lift of what % of the platform capacity is an operational requirment for suspended personal platforms.
125%
What is encroachment?
When any part of the load, load line, or rigging reaches the minimum clearance distance of powerlines.
The correct procedure to follow if the operator of a crane comes in contact with an energized power is to what?
Remain inside the cab unless there is danger of fire, explosion, or other emergency that would force you to leave the cab
What is the maximum included angle for a shackle?
120°
Most crane manufacturers reduce load capacity for duty cycle operations because?
Side loading forces may occur
What is the maximum included angle for hooks?
90°
In a range diagram boom length and bloom angle can be used to determine what?
Load radius
A Crane’s ground pressure can approach a weight that is?
100% of the weight of the crane and it’s suspended load
What is ASME B30.10’s rejection criteria for hoist hooks
Any distortion causing an increase of throat opening of 5%, not to exceed a 1/4”
Where is the best location for leveling a crane
Upperworks
What is the D/d ratio
The diameter of the wire rope(d), compared to what it goes around(D)
What is the purpose of placing mats or cribbing under the outrigger floats?
To distribute the downward force of the float over a larger area
What is the best procedure to follow when underground utilities may be present?
Contact the local utility company
What is the proper procedure when using an insulating link for boot near powerlines
Be sure to maintain the correct allowable distance from the lines
You should always have at least how many wraps on a hoist drum according to ANSI and OSHA?
2
What is cabling?
When the traveling block has turned 90° from its neutral position, entangling the hoist lines
What is not a good location for crane set up?
Above utilitys
0-50Kv
10ft
Over 50-200Kv
15ft
Over 200-350Kv
20ft
Over 350-500 Kv
25ft
Over 500-750Kv
35ft
Over 750-1000Kv
45ft
Over 1000Kv
Consult utility owner
What is net capacity?
Gross capacity minus deductions
What does IWRC stand for?
Independent Wire Rope Core
What does PS stand for?
Plow Steel
Out riggers must be fully extended unless?
There is a load chart for the situation
Blocking under outrigger floats should be made with what?
Douglas Fir or construction grade equivalent
The Crane should have a minimum clearance of what? 360° around it’s swinging radius
2ft
90 degree sling angle
1.0 Load angle factor
60 degree sling angle
1.155 load angle factor
50 degree sling angle
1.305 load angle factor
45 degree sling angle
1.414 load angle factor
30 degree sling angle
2.0 load angle factor
