What is the minimum breaking strength allowed by ANSI? Isn’t in the same for all fall protection gear and expressed in kilonewtons? Like 23kn I’m guessing cuz a lot of biners are 24
Hello, Redbud33. Welcome to the TreeBuzz forum, just in case that hasn't happened for you yet.
I am not a pro climber, so take what I say with a huge grain of salt. If any senior members wish to correct me for any wrong impressions I might have, I welcome it.
You might not be saying it outright, but I get the impression that you are thinking of tree climbing harnesses in terms of them being used as "fall protection" harnesses. I don't think tree climbing harnesses are rated for or intended to be used as fall protection, in the way that construction site safety harnesses get used. Construction site safety harnesses have a dorsal connection for their lanyards, and their lanyards have a package of material in line with the lanyard that will rip apart & unstitch itself, acting as a sort of speed brake. I think these lanyards are referred to as "shock absorbing lanyards". The reason for the dorsal connection on the construction site safety harness is so that you don't get your back broken in a fall. But I'd imagine one is pretty helpless dangling in a safety harness once it has been deployed. It is up to others to get to you and to bring you down to the ground in a situation like that.
It is my belief that tree climbing harnesses are for "work position" only. I don't think that they are "fall rated" harnesses. I think the whole idea with tree climbing harnesses, in terms of operating safely when using them, is to constantly tend your slack and to keep tension on the line. Avoiding slack in the line is of primary importance, in order to limit or better yet eliminate the possibility of having a fall of any significant distance. This is what makes the self-tending nature of the SRT sytems so nice. A holder-upper-thingy pulling your SRT system up the rope as you rope walk prevents the development of slack, with no intervention needed by the climber.
Anyway, I just wanted to make sure that you get the idea that it is a mistake to think of tree climbing harnesses as if they are fall protection harnesses, because I don't think they are. Your only protection is to constantly monitor the slack in your climbing rope, and eliminate it to the best of your ability.
As I said earlier, veterans, correct me if I'm wrong in anything that I've said. Thanks for your time.