Hoisting and rigging Flashcards
(46 cards)
what the maximum wear for a chain under 1 inch? over 1 inch?
5%/ 10%
A socket commonly used with cable to secure elevators cable name is ?
Drop forged socket
Wedge sockes are commonly used as a cable attachment on mobile cranes?
True
compressing a steal sleeve over a rope to form a connecting point is called a?
Swedge pocket
in order to retain a wire rope shape, a millwright will use to retain the shape?
thimble
Never saddle a dead horse?
True always saddle the live end never the dead end
Closing the opening of a hook with mechanical wire is known as?
mousing
Three basic types of shackles available?
Screw pin, round pin, and safety tight
The working load for slings is calculated for?
a single verticle hitch
In order to equalize the load on long slings in a big lift?
Equalizer beam is used
Single length of sling hooked back on its self is called a?
Single Choker
When lifting loads when sensitive to scratching or marring?
Synthetic web sling
A rule of thumb for calculating a sling with a 3/8 wire rope will support ?
1 ton
a block that can be opened on one side and permit the rope to be slid over onto the shiv is called a ?
snatch block
All chain hoists are designed with the hook as their weakest part?
True
It is ok to inter change the hooks on a chain hoist?
False
complete list of hand signals is listed in appendix D of the wcb regulations?
True
Most rigging assecories are produced by?
forging
the reason a hoisting rope the upper block should lead from the center of the shiv is?
to keep the block from tipping
two arms out is stop signal
what fist over head?
main hoist up
how is chain size determined
thickness diameter of the link
What does “A” mean on a chain?
lifting chain
turn buckles when used for rigging and hoisting?
should be tied with tie wire