Hoisting License 3A Questions With
Solutions
What is the hand signal for move slowly? When giving any other hand signal, place other
hand motionless in front
What is the hand signal for "magnet is disconnected"? Crane operator spreads both hands
apart, palms up
Which code applies to overhead and gantry cranes? 29 CFR 1910.179
Which ASME standards cover overhead cranes? B30.16
What is the local law for overhead cranes? 520 CMR 6
What does a 3A license cover? Electric and air-operated overhead cranes
What is the fleet angle? The angle between the load rope from the top of the drum down
to the load block at the bottom, and the vertical plane
, Hoisting License 3A Questions With
Solutions
What is the acceptable range for fleet angle? 1/4° to 2°
(Ensure there is no severe angle if there is a flanged drum. The rope will start chafing on the
flanges.)
What is the requirement for drum diameter? It must be AT LEAST 15x the diameter of the
rope (though it can be bigger)
Where are air hoists used? In applications where electricity may be inconvenient or less
safe
How are wire ropes attached to drums? Wedge, u-bolt, clip, or clamp
How many wraps of rope are required to remain on the drums at all times? At least two
What is true of the bolts used to anchor a hoist? What are some of this bolt's characteristics?
They must be grade 8 or greater.
Solutions
What is the hand signal for move slowly? When giving any other hand signal, place other
hand motionless in front
What is the hand signal for "magnet is disconnected"? Crane operator spreads both hands
apart, palms up
Which code applies to overhead and gantry cranes? 29 CFR 1910.179
Which ASME standards cover overhead cranes? B30.16
What is the local law for overhead cranes? 520 CMR 6
What does a 3A license cover? Electric and air-operated overhead cranes
What is the fleet angle? The angle between the load rope from the top of the drum down
to the load block at the bottom, and the vertical plane
, Hoisting License 3A Questions With
Solutions
What is the acceptable range for fleet angle? 1/4° to 2°
(Ensure there is no severe angle if there is a flanged drum. The rope will start chafing on the
flanges.)
What is the requirement for drum diameter? It must be AT LEAST 15x the diameter of the
rope (though it can be bigger)
Where are air hoists used? In applications where electricity may be inconvenient or less
safe
How are wire ropes attached to drums? Wedge, u-bolt, clip, or clamp
How many wraps of rope are required to remain on the drums at all times? At least two
What is true of the bolts used to anchor a hoist? What are some of this bolt's characteristics?
They must be grade 8 or greater.
