Difference between revisions of "AY Honors/Knot Tying/Answer Key"

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[[Image:Splice on snap shackle.jpg|thumb|A line eye-spliced to a [[snap shackle]].]]
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{{honor_header|2|1975|Recreation<br>General Conference<br>2001 Edition}}
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'''Rope splicing''' in [[ropework]] is the forming of a semi-permanent join between two [[rope]]s or two parts of the same rope by partly untwisting and then interweaving their strands. Splices can be used to form a stopper at the end of a line, to form a loop or an eye in a rope, or for joining two ropes together. Splices are prefered to knotted rope, since whilst a knot reduces the strength by as much as 40% or more,  a splice retains up to 95% of the strength of the line. However, splicing usually results in a thickening of the line and if subsequently removed a distortion of the rope. Most types of splices are used on 3 strand rope, but some can be done on 12 or greater strand braided rope.
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==1. Define the following terms:==
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;a. Bight: The part of the rope or line, between the end and the standing part, on which a knot is formed
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;b. Running end: The free end of the rope, usually shorter. This is the end of the rope in which a knot is being tied.
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;c. Standing part: The end of the rope that is longer. The end opposite the running end.
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;d. Underhand loop: A loop formed by passing the running end of a line under the standing part.
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;e. Overhand loop: A loop formed by passing the running end of a line over the standing part.
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;f. Turn:
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;g. Bend:
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;h. Hitch:
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;i. Splice:
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;j. Whipping:
  
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==Types of splices==
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==2. Know how to care for rope.==
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*'''back splice''' (also called an '''end splice''') - A splice where the strands of the end of the rope are spliced directly back into the end without forming a loop. It is used to finish off the end of the rope to keep it from fraying. The end of the rope with the splice is about twice the thickness of the rest of the rope.  With nylon and other plastic materials, the back splice is often no longer used; the rope strands are simply fused together with heat to prevent fraying.
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==3. Describe the difference between laid rope and braided rope and list three uses of each.==
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*'''cut splice''' (originally called '''cunt splice''') - A splice similar to the eye splice.  It is typically used for light lines (e.g., the log-line) where a single splice would tend to come undone, the rope being frequently wet.  It makes a very strong knot.  A cu(n)t splice is a join between two ropes, made by splicing the ends slightly apart, to make an eye in the joined rope which lies shut when the rope is taut.
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==4. Identify the following types of rope:==
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*'''[[eye splice]]''' - A splice where the working end is spliced into the working part forming a loop.
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;a. Manila:
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*'''horseshoe splice'''
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;b. Sisal:
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*'''long splice''' - A '''splice''' used to join two rope ends forming one rope the length of the total of the two ropes. The long splice, unlike most splice types, results in a splice that is only very slightly thicker than the rope without the splice, but sacrifices some of the strength of the short splice. It does this by replacing two of the strands of each rope end with those from the other, and cutting off some of the extra strands that result. The long splice allows the spliced rope to still fit through the same pulleys, which is necessary in some applications.
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;c. Nylon:
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*'''short splice''' - Also a splice used to join the ends of two ropes, but the short splice is more similar to the technique used in other splices and results in the spliced part being about twice as thick as the non spliced part, and has greater strength than the long splice. The short splice retains more of the rope strength than any knots that join rope ends.
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;d. Polypropylene:
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*'''side splice'''
 
  
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'''Tapering''' is also sometimes done to make the thicker splice blend or taper into the rest of the rope. It is done either by cutting off a lengthwise part of the end of each strand to make the end of the spliced part thinner or by staggering the strands so that the 2nd strand is interweaved one more time than the first and the third is interweaved an additional time after the 2nd. The staggering brings the splice from twice as thick as the rest of the rope to nearly the same thickness.
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==5. What are some advantages and disadvantages of synthetic rope?==
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==6. Do the following to rope:==
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===a. Splice===
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===b. Eye splice===
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===c. Back splice===
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===d. Finish the end of a rope with a double crown, whipping, or a Matthew Walker's knot.===
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==7. Make a six-foot piece of three-strand twisted rope from native materials or twine.==
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==8. From memory tie at least 20 of the following knots and know their common uses and limitations. Demonstrate how they are used.==
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===Anchor bend===
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===Bowline===
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{{knot_bowline| }}
  
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A '''fid''' is a tool (basically a hollow spike) that can be fit over the end of a strand and used to feed it through each loop as needed. It may be required for very tightly wound or large ropes.
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===Bowline on a bight===
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[http://www.grogono.com/knot/splice/index.php?LogoImage=LogoGrog.jpg]
 
  
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A [[Marlinspike]] is a tool, commonly part of a sailor's pocketknife, used to separate strands of rope from one another. It is basically a 3"-4" steel spike, slightly curved, with a non-sharp point that tapers quickly out to a 1/4" to 3/8" shaft in the space of the first 1" length.
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===Butterfly loop knot or Alpine Butterfly knot ===
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===Carrick bend ===
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===Cat's paw ===
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===Clove hitch ===
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{{Knot_clove_hitch}}
  
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==See also==
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===Constrictor knot ===
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* [[Knot]]
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===Crown knot ===
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*[[List of splices]]
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===Double bow ===
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===Double sheet bend ===
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===Figure eight ===
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{{Knot_figure_8}}
  
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==External links==
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===Fisherman's bend ===
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* [http://www.animatedknots.com/splice/ Eye Splice Animation Using Rope - with Discussion]
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===Fisherman's loop ===
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* [http://www.neropes.com/splice/ New England Ropes Splicing Guide]
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===Halter hitch ===
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* [http://www.tollesburysc.co.uk/Knots/Rope_splice.htm Short splice animation]
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===Hunter's bend ===
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* [http://www.tollesburysc.co.uk/Knots/Eye_splice.htm Eye splice animation]
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===Lariat or Bowstring knot===
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* [http://southseas.nla.gov.au/refs/falc/1243.html William Falconer's Dictionary of the Marine]
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===Lark's head===
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* [http://www.bruzelius.info/Nautica/Etymology/English/Steel(1794)_p161.html Steel: ''The Elements and Rigging and Seamanship'' (1794) from The Maritime History Virtual Archives]
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===Man harness knot===
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* [[Alpheus Hyatt Verrill|A. Hyatt Verrill]] ''[http://www.gutenberg.org/etext/13510 Knots, Splices and Rope Work]'' from[[Project Gutenberg]]
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===Miller's knot===
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* Guide to Wire-Rope Splicing - [http://kayfelix.8td.com/splicing.pdf Mirror1] - [http://www.geocities.com/thelonelysailor/splicing.pdf Mirror2]
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===Packer's knot===
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* [http://home.new.rr.com/theys/ Photos of marlinspikes and fids]
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===Pipe hitch===
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[[Category:Knots]]
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===Prusik knot===
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===Sheepshank===
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===Sheet bend===
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===Slip knot===
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===Slipped half hitch===
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===Slipped sheet bend===
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===Square knot===
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{{Knot_square}}
  
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[[fr:Épissure]]
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===Stevedore's knot===
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[[fi:Pleissaus]]
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===Strangle knot===
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===Surgeon's knot===
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===Tautline hitch===
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===Timber hitch===
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===Two half hitches===
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{{Knot_two_half_hitches}}
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==References==
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[[Category:Adventist Youth Honors Answer Book]]

Revision as of 04:51, 25 October 2006

Template:Honor header

1. Define the following terms:

a. Bight
The part of the rope or line, between the end and the standing part, on which a knot is formed
b. Running end
The free end of the rope, usually shorter. This is the end of the rope in which a knot is being tied.
c. Standing part
The end of the rope that is longer. The end opposite the running end.
d. Underhand loop
A loop formed by passing the running end of a line under the standing part.
e. Overhand loop
A loop formed by passing the running end of a line over the standing part.
f. Turn
g. Bend
h. Hitch
i. Splice
j. Whipping

2. Know how to care for rope.

3. Describe the difference between laid rope and braided rope and list three uses of each.

4. Identify the following types of rope:

a. Manila
b. Sisal
c. Nylon
d. Polypropylene

5. What are some advantages and disadvantages of synthetic rope?

6. Do the following to rope:

a. Splice

b. Eye splice

c. Back splice

d. Finish the end of a rope with a double crown, whipping, or a Matthew Walker's knot.

7. Make a six-foot piece of three-strand twisted rope from native materials or twine.

8. From memory tie at least 20 of the following knots and know their common uses and limitations. Demonstrate how they are used.

Anchor bend

Bowline

Template:Knot bowline

Bowline on a bight

Butterfly loop knot or Alpine Butterfly knot

Carrick bend

Cat's paw

Clove hitch

Template:Knot clove hitch

Constrictor knot

Crown knot

Double bow

Double sheet bend

Figure eight

Template:Knot figure 8

Fisherman's bend

Fisherman's loop

Halter hitch

Hunter's bend

Lariat or Bowstring knot

Lark's head

Man harness knot

Miller's knot

Packer's knot

Pipe hitch

Prusik knot

Sheepshank

Sheet bend

Slip knot

Slipped half hitch

Slipped sheet bend

Square knot

Template:Knot square

Stevedore's knot

Strangle knot

Surgeon's knot

Tautline hitch

Timber hitch

Two half hitches

Template:Knot two half hitches

References

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