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Originally posted by Leon
Well this appears to be going a little slow. I'm going to take Peter's advice and start with some ideas on one subject (climbing equipment) and see if I get any responses.
Here is what the Z133 has to say about arborist climbing gear. Some of this is quoted, some is my paraphrasing. In a few places I have added my own opinions, which are in parentheses:
Saddles: "Type II saddle belts and lanyards as specified in ANSI A10.14 shall be worn when above ground level". (Seems to me like rock climbing harness would be okay as long as the climber doesn't mind being incredibly uncomfortable. Also I would have no problem with a homemade harness, for instance one made out of tubular webbing as long as the parts all meet the safe weight requirements)
Ropes: ANSI says that arborist ropes should be 1/2 inch, have a MBS of 24kn when new, and should be designated as arborist climbing lines by the manufacturer. Split tails should meet the same strength requirement. The new edition will probably include the newer 11mm lines as OK. It does not mention static entry lines.
Lanyards: (Lanyards should have the same MBS as ropes. Other than that it doesn't really matter what you use.)
Carabiners and Snaps: These should be double locking and at least 5,000 lbs MBS. (I don't know where they came up with the 5,000 lbs. It makes much more sense to me to use 22kn, which is the standard in every other industry I'm aware of, and is only 50 pounds less than 5,000.)
Other climbing devices: The only other device the Z133 currently as far as I can see mentions is the false crotch, which it says should be rated to 5,000 lbs MBS. (My opinion is that ascenders, descenders, false crotchs, etc. are all OK as long as they are rated to 22kn and used properly.)
Splicing: "Splicing shall be done in accordance with manufacturer's specifications."
Here's a few more quotes from the current Z133:
"Equipment used to secure an arborist in the tree or from an aerial lift shall not be used for anything other than its intended purpose. EXCEPTION: The arborist climbing line may be used to raise and lower tools."
"Ropes and climbing equipment shall be stored an dtransported in such a manner to prevent damage through contact with sharp tools, cutting edges, gas, oil, or chemicals."
"Arborists shall inspect all compnents of their climbing system for damage, cuts, abrasion and/or deterioration before each use. Excessively worn of damaged compnents shall be removed from service"
"Arborist climbing lines shall never be left in trees unattended".
Well there you have it, folks. A crash course in what the Z133 currently has to say about arborist climbing equipment. Obviously this does not cover everything that could be mentioned (tree hammocks, for example), and there is no reason that we cannot change what it does cover. My fingers are tired so I'm going to let this go for some responses.
What do you guys and gals think? What needs to be added? What needs to be taken away? What needs to be changed? What is the average wing speed velocity of an unladen swallow?
If this does take off, and a real discussion begins about this we should probably give it it's own thread.
Originally posted by SRT-Tech
what are the rings rated for on the friction savers that many companys sell??? anybody have any idea?