Knots Flashcards
What is the acronym for rope damage/deteriation
C - Chemicals
A - Abrasion
M - Mechanical
S - Shock
U - Ultraviolet light
E - Extreme heat
Characticistics of a good Knot
Irrespective of the type of rope used, the characteristics of a good knot are:
TRUSS
Tie - Is easy to tie
Recognized - Is easily Recognized when tied correctly
Untie - Is easy to Untie.
Slip - Should not Slip excessively or over tighten
Strength - Will not significantly reduce or damage the Strength of the rope line when tied
correctly.
Knot protocol:
STRICT
Selected knot is correct
Tension is set in line
Remove/release all knots after use
Inspect all knots after tying, look away, recheck
Checked by another (LRL only)
Tail is greater than 150mm
Knot terminology
Bend:To fasten a line to another line or to an object.
Bight: A U-shaped bend in the rope which does not cross itself.
Haul: The act of pulling on a rope.
Hitch: A simple fastening of a line to some object by passing the line round the object and crossing one part over the other.
Parcelling: When part of a rope is wrapped in padding to prevent abrasion.
Pay Out: To ease out or slacken a line.
Round Turn: One complete turn of a rope around a spar or another rope.
Running End: The free end of a rope.
Standing End: The part of a rope which is taking the load
12 TYPES OF KNOTS
Half hitch
Overhand knot
Clove hitch
Rolling hitch
Round turn and two half hitches
Double sheet bend
Bowline
Figure-8 stopper
Figure-8 on the bight
Figure 8 on the bight (follow through or re-thread)
Double fisherman’s
Butterfly knot
Specifications of Life Rescue Lines
Diameter: 13 mm
Colour: Orange with blue fleck/Blue with orange fleck
Safe working load: 272 kg maximum
Fibre: Nylon 6 core/polyester sheath
Melting point: 250oC approx.
Elongation: 3% at 80 kg load
Length: 1x50 m + 1x25 m on primary & rescue appliances
Strength: Core (70%), Sheath (30%)
Minimum braking strength: 4000 kg
The specifications for the general purpose rope line
Colour: White when new
Diameter: 12 mm
Construction: Three-strand right hand lay
Fibre: Polyester
Melting Point: 250oC
Minimum Breaking Strength: 2200 kg / 22 kN (when new)
Safe Working Load: 450 kg
Length: 30 m (Division A)/10, 20 and 30m (Division B)
Karabiner general description
Steel construction
D Shape
Screw gate, locking type
How do you inspeect a karabiner
Hinge gate opens freely
Pin/ latch engages with the slot
Locking sleeve operates smoothly
All surfaces free from sharp edges/ rust
Deformity
Parts of a harness
Dorsal - Fall arrest (Aerial appliances)
Sternal - Fall arrest (Aerial appliances)
Ventral - Fall Prevention (Safe work at heights)
Waist side - Work positioning (Use in pairs)
Soft Attachment Point - Use to connect chest to harness
Equipment Loops - Attach equipment ONLY
Fall Arrest Lanyard Connector Holder - Store lanyard hooks when not in use
Adjustable Leg Loop to Waist Belt Straps - Allow length of leg loops to waist belt straps to be adjusted to remove slack
