RIG CH.4 Flashcards
When are splices used?
When a permanent eye or permanent joining of two ropes is desired.
What is the efficiency of an eye splice?
95%
What is the efficiency of a short splice?
90%
When should a short splice be avoided?
If the rope is to pass through a block
If a rope is to pass through a block and without heavy tension which splice is preferred?
Long Splice
What is the efficiency of the long splice?
80%
What is another name for an eye splice?
Side splice
How many full tucks does OSHA require for an eye splice?
4
What does an eye splice do?
Forms a permanent eye in the rope.
What does a short splice do?
Permanently joins two ropes.
What is another name for a short splice?
Butt splice
T or F: A rope with a short splice can pass through a pulley.
False
How many full tucks does OSHA require on a short splice?
Eight, four on each side of the centerline
What parameters do ropes under 1” dia. follow for a short splice?
Strand tails must project at least 6 rope diameters beyond last full tuck or, taper and add two additional full tucks.
What parameters do ropes larger than 1” dia. follow for a short splice?
Tails must project at least 6 inches, or tapered and tucked two additional full tucks.
What is a back splice used for?
Used to prevent the ends from fraying
T or F: OSHA has no standards regarding the back splice
True, cause the back splice is not subjected to any loads.
What are other names for the back splice?
Crown splice or crown knot
