Post on 15-Jan-2016
OBJECTIVE :
To be able to tie the 7 basic knots
SCOPE :
Introduction to the types of rope
Maintenance of a rope
Parts of a rope
Methods of tying knots
2 main rope types commonly used :
NATURAL FIBRE ROPES :
Examples: Hemp, Manila, cotton
Limitations : Rot easily in humid conditions
* Strength of such ropes are limited due to the fact that natural fibers are short.
SYNTHETIC FIBRE ROPES :
Examples : Nylon , Polyester
Stronger and lighter than natural fibersof the same size .
Will not rot so easily as they absorbless water.
Limitations: Ropes are smoother and Knots may easily be undone Sensitive to overheating Can cause rope burn
NYLON ROPES :
Have great elasticity compared to synthetic ropes.
Good for absorbing shock loads
Not suitable for tying some of the rope obstacles
because the occurrence of friction during tying
that produces heat and reduces the rope’s strength
Easy to handle, good for instructional use on tying
of knots for hands-on session
POLYESTER ROPES :
Have less ability to stretch. Good for heavy stress.
Used in activities where minimal stretch is required
Like the tying of sails for boats and mooring lines
Easy to handle
Resistant to ultraviolet light. Water resistant thus will not rot so easily.
All ropes deteriorate with wear and some deteriorate
under the influence of weather or chemicals.
Natural fibre ropes, for example, are very susceptible to rot while wire and synthetic ropes are not.
However, galvanized wired ropes can rust while synthetic ropes can be seriously affected by heat or sunlight.
Chemicals such as acid attack most materials and damage from abrasion is one of the most common causes of deterioration in any ropes.
Deterioration :
Prevention :
Keep all ropes away from the ultraviolet light and sun as much as possible
Store all ropes in a well ventilated room
All ropes should be dried and cleaned before storage
Keep all ropes away from chemicals
Need to maintain care of ropes
POINTS TO REMEMBER :
A rope that has twice the diameter of another has four times it’s strength
Never use two ropes of different materials together as only the more rigid rope will work under the strain
Do not use ropes that will float for anchorage in ports as they would be severed by the propellers of a boat
Repair frayed ends immediately
7 BASIC KNOTS : Thumb Knot
Figure of Eight
Reef Knot
Fisherman’s Knot
Sheet Bend
Bowline
Clove Hitch
It is used as a simple stopper knot
Preventing a rope from running through a block
Preventing a rope running through a block.
Commonly used for the sheets of a sailing boat
Used to join 2 ropes of the same thickness together
Used to join 2 slippery ropes of the same thickness together
Used to join 2 ropes of different thickness together
Used to tie a loop that is fixed for rescue purposes
Used for securing a rope to round objects
TENT GUY LOOP :
Used to secure the tent to the supporting pegs in the ground. One end of the rope is secured via a bowline to the Sleeve ring of the tent. Another end of the rope goes beneath the hook of the peg . Make a slip knot ( bootlace tie method ) with the rope end in your left hand
TENT GUY LOOP :
Insert the other end of the rope into the slip knot and pull it down. After pulling, curl this end of the rope around the hook of the peg again. Tie 2 half Hitches round the pegs (Refer to final diagram)
Challenge:
Recall all knots and tie in the rope provided.
COMBINED PRACTICAL :
Knots are essential in Campcraft
It is also needed to pitch tents during camps
With these skills, you will be able to apply them in camps and making gadgets such as rafts
CONCLUSION :