Rigging And Lifting Flashcards
What is an Overhand Knot used for?
Being the starting point of many knots and frequently used as a stopper at the end of a rope.
What is a Figure Of Eight Knot used for?
Used at the end of a line to prevent the end from slipping through a fastening or loop in another line. Should be used to finish other knots especially when using synthetic ropes.
What is a Square Reef Knot used for?
Used for tying together two lines of the same size so that they will not slip.
What is a Bowline Knot used for?
Used for forming a loop in the end of a line. Easy to tie and untie, will not slip and can be used to secure loads without crushing them.
What is a Bowline On The Bight used for?
Putting a non slip loop anywhere between the ends of a rope.
What is the only grade of chain allowed to be used as overhead hoisting chain?
Grade A
Where would you find the grade of a chain?
Stamped on into its surface.
Chains used as slings should be supplied with what?
A master ring and hook attached.
When should you decommission hoisting chains because of wear?
- For 1 inch or smaller = 5% of the diameter of the link.
- For 1 inch or larger = 10% of the diameter of the link.
How efficient are poured sockets?
Where are they used?
- They can take 100% of a wire ropes load capacity.
- passenger or Freight Elevators
How efficient are Cappel Sockets?
They can take 100% of a wire ropes load capacity.
What is unique about Cappel Sockets?
They allow easy, frequent inspection of the whole section of rope where it is gripped.
How long must the dead end of a Wedge Socket be exposed?
6-9 inches
How efficient is a Wedge Socket?
They can take 70% of a wire ropes load capacity.
What are Wedge Sockets used for?
Quick and easy applying and detaching of secure ball or hooks for mobile cranes.
