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Ropework

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They may be man's oldest tool. Knots were important to Venetians, who maintained ... In the middle ages, knotting acquired religious symbolism & superstitions. ... – PowerPoint PPT presentation

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Title: Ropework


1
Ropework
2
  • Cavemen tied knots, so did the Incas of Peru who
    made knotted strings instead of written figures.
    They may be mans oldest tool. Knots were
    important to Venetians, who maintained their
    empire thru Maritime strength. In the middle
    ages, knotting acquired religious symbolism
    superstitions. By 18th century, every deep water
    ship was a spiders web of rope rigging. When
    commercial sailing ship died, knotting seemed to
    have died too. Yet some people today still need
    knots. Rock climbers secure their ropes with care
    since their lives hang on them.

3
Care of Ropes
  • Look for worn spots and broken fibers on the
    outside
  • Inspect the inner fiber by untrusting the rope in
    several places
  • Unwind a strand 8 inches long and break it with
    your hands, if it breaks a little effort, the
    rope is unsafe
  • All rope should be kept as dry as possible
  • Protect rope against chemicals

4
Parts of a Rope
Standing Part
Bight
End
End
Overhand Loop
Underhand Loop
5
Kinds of Rope Work
  • KNOTS - used for various purposes, such as
    stopper, rescue and even for connecting ropes
  • BENDS for connecting ropes of various sizes
  • HITCHES tying ropes to logs, posts, trunks or
    other ropes.
  • - also for lashing purposes
  • WHIPPINGS to stop fraying of the end of ropes
  • SPLICES tying or weaving back the strands of a
    rope
  • LASHINGS to join spars or poles together

6
Knots
  • Can be tied quickly and easily.
  • Firm, dependable and capable of doing what its
    supposed to do.
  • Can be easily untied.

7
Whippings
  • Means of protecting the ends of ropes from
    fraying.
  • It binds the fiber so tightly that they cant
    untwist.

8
A. Simple Whipping
  • Most commonly used method.
  • Easy to master
  • Can be done on fine cord with strong sewing
    cotton, if your fingers are nimble.

9
B. West Country Whipping
  • Tie square knot at the back.
  • Continue within one half inch of the end.
  • Finish of with reef knot.
  • Tie square knot a few inches from the end of the
    rope.
  • Trim end with sharp knife.

10
Lashings
  • A means of fastening two poles (or spars)
    together
  • Qualities of a Good Lashing
  • Firmness it should be string and tight, or else
    it is likely to fall apart when put under strain.
  • Neatness proper steps should be observe because
    incorrect lashing can easily loosen.

11
  • Knots and Hitches used in Lashing
  • Stopper Knots used to lock and prevent slipping
    of a clove hitch.
  • Example Overhand, Figure of Eight, etc.
  • Clove Hitch used to start and finished almost
    all lashing.
  • Timber Hitch Used to start a diagonal lashing
    because of its ability to tighten.
  • Parts of Lashing
  • Wrapping for connection
  • Frapping for tightening
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