| Updates Questions and Correct Answers
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The formula for determining stress on a snatch block performing a vertical lift is:
line pull x block factor = block load. What must be done to calculate formula? -----
----CORRECT ANSWER-----------------Multiply the load weight by the coefficient of
friction to determine line pull,and then use the standard formula
If both fists are placed in front of your body with your thumbs pointed
outward,the crane operator should: ---------CORRECT ANSWER-----------------Extend
the boom section
What is the MAXIMUM Percent of the rated capacity of a crane that can be used
to lift personnel ---------CORRECT ANSWER-----------------50%
When does Eghtening present the gratest hazard to the crane and rigging
personne ? ---------CORRECT ANSWER-----------------When thunder and lightning are
apparent .
What force would be required to move an object up an inclined plan compared to
lifting it vertically? ---------CORRECT ANSWER-----------------1 1/1 times more
,Personnel platforms shall NOT be used to lift ---------CORRECT ANSWER---------------
--Tools and materials without employees
All of the following are reasons for stopping personnel lifting operations EXCEPT --
-------CORRECT ANSWER-----------------There are no tag lines
When working in close quarters. the main concern is ---------CORRECT ANSWER----
-------------safety
The point of any object's weight can be assumed to be concentrated at ---------
CORRECT ANSWER-----------------Center of gravity
In a spur-gear chain hoist with a two chain system, the endless chain is used to. ---
------CORRECT ANSWER-----------------Raise and lower the load
All of the following conditions exert dynamic loading on a crane EXCEPT ---------
CORRECT ANSWER-----------------Static boom angle
, Proper lead sheave placement as it relates to the hoisting drum location is ---------
CORRECT ANSWER-----------------proper spooling of wire rope
The most important information to consider when planning a lift is ---------
CORRECT ANSWER-----------------Weight of the load
Prior to use all new aitered modified or repaired rigging hardware shall be
inspected by whome ? ---------CORRECT ANSWER-----------------A designated person
An unsafe condition that riggers should be aware of when dealing with a multi
part load block is: ---------CORRECT ANSWER-----------------Twisting multi part lines
Most cranes in duty cycle operation require a: ---------CORRECT ANSWER-------------
----load test
The only personnel allowed to have their body parts outside of the suspended
personnel platform during hoisting and iowering operations are: ---------CORRECT
ANSWER-----------------signal persons
What is the most important reason rigging hardware should NOT be modified? ----
-----CORRECT ANSWER-----------------It could negatively affect its capacity