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Questions and
Answers
,What is the horizontal distance from the center of
rotation to the center of the suspended load
called? - ANSWER-Load radius
The shaded area on a load chart indicates
_______? - ANSWER-A structural chart
The minimum distance to a power line of
unknown voltage is ? - ANSWER-50'
When hoisting personnel and have known voltage,
can you use Table A and get closer than 20'? -
ANSWER-Never!
What is the minimum tale swing clearance
requirement - ANSWER-2'
What kind of rigger is required for A/D? -
ANSWER-Qualified Rigger
,Signal training is now required in the
construction industry, True or False? - ANSWER-
True
What is the weight of the object being lifted
called? - ANSWER-Net Load
What are the four different types of crane signals?
- ANSWER-Hand
Voice
Audible
New
Why are the edges of a man basket smooth? -
ANSWER-To protect against injury
Man basket doors must swing which way? -
ANSWER-Must swing inwards only
Name a few things to inspect for with synthetic
slings - ANSWER-Missing tags, acid burns,
, broken stitches, melting, snags, tears, cuts,
discoloration
What should never be done while inspecting a
wire rope? - ANSWER-Open it to expose the core
A few things to be checked for in a wire rope
inspection are - ANSWER-Corrosion, crushed
strands, bird caging, high stranding, core
protrusion, damaged end fittings, heat damage
from any source
If the horizontal sling angle decreases, the rated
capacity - ANSWER-Decreases
How much does concrete weigh per cubic foot? -
ANSWER-150 lbs.
When making a lift in excess of 75% of rated
capacity, this would be considered a ? - ANSWER-
Critical lift