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Rigging 4
Slings
| Question | Answer |
|---|---|
| 1. ___ is flat narrow strapping woven from yarns of strong synthetic fibers | webbing |
| 2. A ___ is a flat rigging sling made from synthetic webbing material | web sling |
| 3. Webbing for rigging purposes is made of woven ___ or ___ fibers. | nylon, polyester |
| 4. In general, how is the material that the webbing is made from identified | by colored marker yarns woven in |
| 5. Which type of webbing materials can be used around bleaching agents | polyester |
| 6. Which type of webbing materials can be used in oily environments | both polyester and nylon |
| 7. Exposure to ultraviolet light, such as sunlight or arc welding, may affect the webbing material strength without any visible indication True or False | True |
| 8. Web-slings consist of what four parts | length, body, splice, and loop eye |
| 9. A ___ is a leather or webbed pad used to protect the web sling from damage | wear pad |
| 10. Identify the sling types page 24 | TYPE 1, TYPE2, TYPE3, TYPE4, TYPE5, TYPE6 |
| 11. Web sling load capacity tables generally list what four characteristics | webbing class, number of plies, webbing width, sling construction type |
| 12. What is meant by "fabrication efficiency" | ratio of tensile strength of webbing material to tensile strength of web sling it is made into |
| 13. List at least four factors that decrease web-slings strength | age, mishandling, tying into knots, pulling it out from under a load |
| 14. What is a round sling | bundle of unwoven yarns of load-bearing synthetic fibers, surrounded by non-load-bearing woven cover |
| 15. How is the rated capacity of a round sling determined | by the color of its cover.?? p38? |
| 16. What is the choker rating of a round sling with a tan color covering | 8500 check please pg 38 |
| 17. Why is the use of chain preferred over wire rope | chain has 3X impact-absorption of wire rope, it is more flexible, cheaper, lasts longer |
| 18. Rigging or hoisting chain is designed to __ before ___ | deform, fracturing |
| 19. Chain should be removed from service if elongation exceeds about ___ or the thickness of any part of a link has decreased by about ___ | 5%, 10% |
| 20. Of the many types of chain specified, only___ chain are to be used for sling or tie-down applications | Grade 80 and Grade 100 |
| 21. What are the safety factors numbers used to calculate the working load limit of a chain | 3.5 and 5 ???? super check please |
| 22. The chain included with a hoist may not display a grade number because it is designed for the hoist. However, its strength is at least as strong as the hoist's rating True/False | True p40 in Factoid |
| 23. Typical connecting attachments between the load, rigging, and hoisting device include ___ | shackles, master links, and hooks |
| 24. A __ is usually the primary link between the rigged load and the hoisting equipment | hook |
| 25. A __ is a U-shaped metal connector with holes drilled into the ends for receiving a removable pin or bolt | shackle |
| 26. The most common shackle shapes are the __ and __ types. | anchor, chain |
| 27. What is the load limit reduction of a shackle when the lifting angle of the sling connected to it is at 45 degrees | 30% chart p 44 |
| 28. A __ is a continuous link, often pre-attached to manufactured slings, used to gather multiple slings and connect them to lift hooks. | master link |
Created by:
JoshHampton