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Terms in this set (29)
Wire rope installed on most cranes
Right Regular Lay
How many randomly broken wires in a lay length must there be on a mobile cranes hoist line before it should be removed from service?
Minimum design factor required for a right regular lay, boom or hoist wire rope
How many broken wires are permitted at the end connection of a pendant before it must be taken out of service
Type 1 rotation resistant hoist wire rope has a design factor of:
5 to 1
How many broken wires must be present in one strand of one lay for running wire rope to be removed from service
How many randomly distributed broken wires in rotation resistant hoist wire rope are considered for replacement
2 broken wires in 6 rope diameters
Should the load be applied when determining the proper boom angle
When lifting loads on tires, cranes are rated at what percentage of tipping?
How does the effective weight of a stowed extension relate to the actual weight of the extension
Lower than the actual weight
When load radius is between radii values, the operator must use the:
Increasing the distance from the cranes center of gravity to the tipping axis will have what effect on a mobile crane?
What is the minimum pitch diameter used for sheaves in a boom hoist reeling system
Not less than 15 times rope diameter
A crane is at the point of instability when the cranes leverage on the load equals :
100% of the loads leverage on crane
A sudden start or stop on the hoist function while operations can produce a :
Which crane boom configuration can cause the most dangerous side loading condition for the crane?
Long boom with minimum radius
When personnel platforms are hoisted with a mobile crane what item listed must be provided
An anti two block device
Standards or regulations governs the lifting of personnel in construction
According to osha 1926.1431 at what wind speed must a qualified person be consulted?
When in transit, what is the minimum clearance for 133kv power lines?
When in transit, what is the minimum clearance for going under 445kv lines?
When operating near high voltage power lines, what clearance shall be required when the rating of the lines is 275 kv?
20 ft with encroachment precautions
According the osha 1926.1411, when you encounter power lines with a voltage of 44 kv and the crane is traveling , what is the minimum required clearance?
According the osha 1926.1408, the minimum clearance between any part of the crane and power lines rated 50 kv or below shall be :
10 ft with encroachment precautions
According to osha 1926.1408, for power lines rated 100 kv, the minimum clearance between the crane and any lines shall be?
15 ft with encroachment precautions
Mobile crane load block hooks must not have a twist in excess of :
Mobile crane load block must not have a throat opening in excess of :
5% of its original size
What is the design factor for grade 80 chain slings
Wire rope clips, u portion of the clip should be on
The dead or short end
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