Tree rescue manual | Page 55

A variation of the twin-line offset rope rescue system can be used for extracting a casualty from a branch end or managing lateral movement .
In this system , both the main and belay line are connected to anchors as high in the tree as the structure will safely permit . The rescuer attaches one line directly to the casualty , and redirects the other through a pulley fixed to the branch end where the casualty is situated .
The ground crew can then lift , lower or move the casualty laterally by adjusting the tension in each line .
No additional belay line is required for this rescue system .
Skills that may be required for all branch end rescues :
Technique
Description
Evaluating tree anchors
Chap . 2.3
Branch walking
Pg . 103
Bracing a branch
Pg . 204
Butt block
Pg . 46
Using redirects
Pg . 111
© Arboriculture Australia 2022 - 53 -