with complete solution
What should be given a visual inspection prior to use?
All rigging equipment slings and hardware
What do you do with defective components?
Destroy defective components
What is the most important precaution in hoisting and rigging?
The most important precaution is to determine the weight of the load before attempting
to lift it
What is the SWL and when is it determined?
Safe Working Load of all equipment, slings and hardware and once the weight of the
load in known.
What is necessary before any crane lift?
A lift plan
What is a lift plan?
This identifies the requirements needed for the primary areas of every lift.
What are the requirements included in a lift plan?
It identifies the size shape and weight of the load, where it will be lifted from, where it
will be placed and the placement of the cranes.
What determines the size of the crane used, where it is placed and the required site
preparations?
The important load and site factors that are describe in the systematic assessment of
the lift plan.
What are the important load and site factors of the lift plan?
The size and setup of the crane as well as the up to date inspection report, the step by
step movements of the crane and the environmental lifting conditions.
What is included in the documented plan?
The name of those preparing the plan, designate the lift supervisor, crane operators,
riggers and their state qualifications, and copy going to any designated authority
What are the four types of hoists?
Come a long, Chain Fall, Gantry and Monorail
Why is the come a long/ chain fall the most abused pieces of rigging hardware
equipment?
Because it is generally severely overloaded
At what percentage are hoist factory tested at?
150% of capacity
When do the handle of most come a long hoists flex?
When overloaded, so take this as a warning to back off and not put a snipe or cheater
over the handle
How does overload easily happen on a chain fall hoist?
It is due to the gearing system and two people on the hoist chain trying to lift more than
it is rated for
What are the two types of chain fall hoists?
1/2 to 2 ton and 5 and 6 ton