Linework Fundamentals week 2

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  1. working load limit definition
    is the maximum load applied to a rope to ensure longevity of that rope and is calculated by dividing the breaking strength of the rope by design factor
  2. working load limits, points
    • Should not be exceeded
    • To ensure the longevity of
    • the rope,Always less than the
    • manufacture's catalog breaking strength
    • Determined by the employer
  3. reduced working load limit
    multiplied by the efficiency rating of knot or splice
  4. catalog breaking strength
    • always more than the working
    • load limit,Average force in pounds
    • needed to break a rope
    • Reduces the longevity of the rope
    • Lifting loads that approach
    • the CBS of a rope can break the filaments of that rope
  5. what is used for most rigging applications
  6. design factor
    • industry standard used to determine WWL
    • Design factors may range from 5 to 9
    • Companies will determine the
    • design factor
    • NLC design factor is 5
  7. Efficiency rating of Eye Splice
  8. Efficiency rating of short splice
  9. Efficiency rating of Bowline
  10. Efficiency rating of Clove Hitch
  11. Efficiency rating of Square knot
  12. Efficiency rating of knots that choke
  13. Shock load occurs when
    rope is pulled tight very quickly and with great force, the instant the slack is removed, shock load occurs
  14. as sling angle decreases
    sling tension increases
  15. when calculating sling tension the weight distribution of load must be what
    equal on all slings
  16. what is used for most rigging applications
  17. sling angles can create what?
    tensions that far exceed the weight being lifted
  18. where is the weight rating stamped on parted block
    hook or shell
  19. Where is most line equipment weights located
    name plate
Card Set
Linework Fundamentals week 2
Week 2
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