Tree rescue manual | Page 145

2.3.5 Anchor point analysis chart
The chart below provides a ‘ quick and dirty ’ toolkit for qualitative analysis of a range of anchor point considerations . Anchor points with multiple marginal components should be avoided if possible .
Component of analysis
Marginal Moderate Safest
Branch thickness
Wrist Forearm Thigh
Anchor location
Well outside union
Slightly out from union
In union
Stem inclination
Horizontal ( lateral ) branch
Leaning stem or branch
Vertical stem or main trunk
Rope set
Over single branch
Over multiple branches
Around upright stem
Double load test
Triple load test
Load testing
Individual test
( not at intended angle of loading )
( at intended angle of loading )
Anchor point behaviour during load test
Lot of movement
Feels borderline
Some movement
Feels pretty good
No movement
Feels bombproof
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