Before leveling a mobile crane on outriggers, an operator should ensure: - ANSWER there is no weight of the crane bearing on any tires
Operating a mobile crane with a long boom, on uneven ground, what support condition should be considered? - ANSWER Keeping 90 degree angle between cylinder rod a...
Before leveling a mobile crane on outriggers, an operator should ensure: - ANSWER there is no weight of the
crane bearing on any tires
Operating a mobile crane with a long boom, on uneven ground, what support condition should be considered? -
ANSWER Keeping 90 degree angle between cylinder rod and pad
What is the primary purpose fir a rooster sheave or auxiliary boom point sheave? - ANSWER Separate the boom
hoist lines
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? - ANSWER 6
On a mobile crane, how many broken wires are permitted at the end connection of a pendent before it must be
taken out of service? - ANSWER 1
Type 1 rotation resistant hoist wire rope has a design factor of: - ANSWER 5 to 1
, How many randomly distributed broken wires in rotation- resistant hoist wire rope are considered for
replacement? - ANSWER 2 broken wires in 6 rope diameters
The term net capacity is best defined by which of the terms listed below? - ANSWER Gross capacity minus
capacity deductions
Mobile cranes that are set up on barges, shall have a list chart provided by which of the entities listed below? -
ANSWER Manufacturer
When lifting loads on tires, mobile cranes are rated at what percentage of tipping? - ANSWER 75%
How does the effective weight of a slowed extension relate to the actual weight of the extension? - ANSWER
Higher than the actual weight.
When load radius is between radii values, the operator must use the: - ANSWER longer radius
, If working near overhead power line and using a tag line, which type of rope is least conductive to electricity? -
ANSWER Polypropylene
When working near power lines with the mobile crane, where does OSHA require caution stickers be installed on
all equipment? - ANSWER At operators station and 2 on the outside of the equipment.
According to OSHA table T, what is the minimum clearance for 133kV power lines? - ANSWER 10ft
According to OSHA's table T, what clearance should a mobile crane IN TRANSIT keep while going under 445kV
lines? - ANSWER 16ft
According to OSHA when is it safe to hoist loads with a mobile crane below energized power lines? - ANSWER
When the fully extended boom can't reach the prohibited zone.
According to OSHA 1926. 1411, when you encounter power lines with a voltage of 44kV and the crane is
TRAVELING, according to Table T, what is the minimum required clearance? - ANSWER 6ft
According to OSHA, mobile crane load block hooks must not have a twist in excess of: - ANSWER 0
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