KNEE ASCENT LOOP
Single rope ascent technique The access rope is attached to the base of the tree and runs through an appropriate anchor in the tree. It will also be used for work. On a single rope, the ZIGZAG must only be used with the CHICANE.
This technique allows for rapid rescue and efficient climbing with the KNEE ASCENT knee ascender.
Tree access Doubled rope ascent technique The arborist ascends the access rope (purple).
In the event of a problem like a hornet attack, s/he can self-evacuate with the work rope (blue). A mule knot or releasable knot secures the ZIGZAG.
This versatile ascent technique is adaptable to many situations and allows an access rope to be available during work.
See the Instructions for Use for ZIGZAG, ZIGZAG PLUS, CHICANE and KNEE ASCENT LOOP supplied with your devices, or available at www.petzl.com