Chapter 4 Flashcards

Splices

1
Q

When are splices desirable?

A
  • To make a permanent eye in the end of a rope

- Permanently join two ends of the same size and type of rope togther

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

When installed correctly, splices are ______________?

A

Almost as strong as the rope itself, whereas a knot can significantly reduce the strength of the rope.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Properties of an Eye Splice?

A
  • “Side Splice” - because the end of the rope is spliced back into the side of itself
  • 95% Efficient
  • Can be strengthened by adding a thimble to the eye
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are OSHA’s requirement for eye splices in Synthetic Fiber Rope?

A

Synthetic Fiber Rope eye splices must have at least 4 full tucks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the properties of a Short Splice?

A
  • 90% Efficient
  • Should be avoided if the rope is to pass through a block, especially when heavy strain is involved
  • Used to join the ends of two identical ropes together or to remove damaged portion of the rope
  • “Butt Splice” - Ends of the two ropes are butted together
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

When should a Short Splice be used?

A

When maximum strength is needed and the rope will not pass through a pulley

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are OSHA’s requirements for Short Splices in Synthetic Fiber Rope?

A
  • Must have at least 8 full tucks, 4 on each side of the centerline.
  • Rope under 1” in diameter the strand tails must project at least 6 rope diameters beyond the last full tuck, or taper them and add two additional full tucks
  • Ropes larger than 1” in diameter, tails must project at least 6”, or tapered and tucked two additional full tucks
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Properties of Back Splice?

A
  • “Crown Splice” or “Crown Knot”
  • Serves to prevent rope end from fraying
  • OSHA has no regulations on this splice, but should be made with 4 full tucks for consistency
How well did you know this?
1
Not at all
2
3
4
5
Perfectly