Rk1 Manila Rope Flashcards
How many grades of Manila rope is there
6
What colour is sisal rope
White with coarse texture
Can sisal rope be used for construction rigging and hoisting
No
How much stronger is nylon rope to Manila rope
3 times stronger
How long will nylon rope stretch
40% it’s length
How much strength does nylon rope lose when wet
10%
How far can apply eater stretch before breaking
5% it’s length
Polyester is what percent as strong at nylon
87
Does polyester lose strength from being wet ?
No
Wll well hoisting formula
Breaking strength x design factors (5)
Will support worker formula
Breaking strength
______
10
Sharp bends reduce rope by what percent
50%
What is the strongest rope Polypropylene Manila Sisal Polyester
Polyester
What is a non slip knot
Bowline
Single Dutchman is used for what
Tieing down loads
Composition in wire is indentified in 3 ways
Number of strands
Number of wires in each strand
Pattern of wires in strand
What are the 4 strand patterns
Ordinary
Seale
Warrington
Filler
What is lay
The direction the wires and strands are wound
Lang lay
Both wire and strands wound in same direction (never use lang as a sling)
What is peening
When rope is striked and flattened
What is scrubbing
Displacement of wires from rubbing against itself or an object
Fatigue fracture
Breaks with little surface wear (bending stressing vibrations)
Manila rope is about what percent as strong as nylon
35%
When rigging a loose bundle of round stock u should use a
Basket hitch
