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close this bookDisaster Rescue - Australian Emergency Manual (Natural Disaster Organization, 183 p.)
close this folderCHAPTER THREE - ROPES, CHAINS AND SLINGS
View the documentRopes, Chains and Slings
View the documentTerminology
Open this folder and view contentsNatural Fibre Ropes
Open this folder and view contentsSynthetic Fibre Ropes
View the documentClimbing Tape
View the documentSteel Wire Rope (SWR) - Safe Working Loads (Figure 3:11)
Open this folder and view contentsPrecautions in Operations
Open this folder and view contentsChains and Slings
View the documentHook Mousing
Open this folder and view contentsKnots
View the documentKnot Safety
View the documentKnot Strengths
Open this folder and view contentsLashings

Knot Strengths

3.44 Knot Strengths

The following chart shows the approximate residual breaking strains of new rope in which rescue knots have been tied:

Thumb (Overhand) Knot

45-55%

Figure of Eight Knot

55-65%

Double Sheet Bend

55-65%

Buntline Hitch

60-65%

Fisherman's Bend

60-65%

Double Fisherman's Knot

60-70%

Clove Hitch

60-70%

Round Turn & Two Half Hitches

60-65%

Timber Hitch

60-70%

Figure of Eight Loop

60-70%

Figure of Eight on the Bight

60-70%

Bowline

60-65%

Bowline on the Bight

60-65%

Chair Knot

40-45%

Portuguese Bowline

60-65%