smokey01
ArboristSite Operative
We know that putting your anchor at the base of the tree or nearby tree doubles the force on the supporting branch (my 200 pounds becomes 400 pounds hanging from the branch) and that securing the rope to the supporting branch with a bowline or alpine butterfly does not, but what about when you catch two nearby branches with with your single rope?
I gave this some thought the other day as I captured two close branches, one just above the other, and sent my alpine butterfly up the rope to secure my climbing anchor. Although both branches are at the top of my climbing system, I have subjected the upper branch to the same force as if I secured my line to the base of the tree. So, what appears to be a back-up branch, is really a detriment.
Just thinking and sharing this thought.
I gave this some thought the other day as I captured two close branches, one just above the other, and sent my alpine butterfly up the rope to secure my climbing anchor. Although both branches are at the top of my climbing system, I have subjected the upper branch to the same force as if I secured my line to the base of the tree. So, what appears to be a back-up branch, is really a detriment.
Just thinking and sharing this thought.