can someone explain?

1

1bigtree

Location
Grand Rapids, MI
Can someone explain this diagram which came with the petzl sequia "arborist" climbing saddle? I'm not sure if this is breaking strength at the floating bridge attachment(15KN)? Shouldn't this component have a minimum breaking strength of at least 22KN for an "arborist saddle". Also, Can anyone tell me the breaking strength of the rings?
 

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what it's telling you is that the whole thing together is rated as a unit. Your instruction sheet will tell you that you can't just use one ring. You can use the two gold rings together (bridge), the side rings together, or all of the above as long as you use two rings together. You can clip into the gold rings with another lanyard.
 
The petzl sequoia isn't ANSII approved here in the for a work harness. If it were it would have a stamp or some id on the tag where it states the Europe ratings.

I have one and feel safe in it. It dose feel a little dinky at times, and it took a while to "trust" the gold rings.
 
let me know if you find out. I replaced the webbing bridge soon as I got it. It wouldn't fit the micro pulley with out the sheave flare running on the stitching.

I believe I've read somewhere where each ring is rated at 15k, and that the combined rating would be more than enough to satisfy ansii. Perhaps since the rings open they have to individually meet the min rating. Or perhaps Petzl hasn't tested them to US standards, and marketing them here was an after thought? All guesses here.
 
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The petzl sequoia isn't ANSII approved here in the for a work harness.

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Yup. Neither is the TreeMotion because, as I understand it, there is no current ANSI standard that is specific to tree climbing harnesses. (Although I'm assuming the 23kN and other relevant standards would still apply to the harnesses.)

Z133.1 does say that arborist saddles should meet ANSI 359.1 and be identified by the manufacturer as suitable for tree climbing. I have a feeling this somewhat vague wording will be changed over the next couple years.
 
I have contacted petzl and am currently awaiting more info on the saddle. I was told the gated rings are rated above ANSI req. though I am awaiting some documentation. As for the Bridge??? By the way the tree motion !!!does!!! meet the requirements even though it may not be stamped. I will let you know of any other info I get.
 
Currently there is no US ANSI standard for treeclimbing harnesses. Like TreeStuff said, harnesses are expected to meet ANSI 359.1.

This has been discussed many times at Z133 meetings. In order to have a tree climbing specific harness standard it will have to be done from the bottom up. The US manufacturers are meeting to talk about this but I have no clue what the status is.
 
I think it's the bridge itself. 15kn is pretty typical for belay loops in other harnesses. I would also read that the side D's are 15kns apiece. Just my take.
 
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the thing with these saddles like the treemotion and butterly and sequoia is that they are intended for "positioning only and not fall arrest. Thats what is said in the info that came with my butterfly

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Nearly every saddle I've seen info on, regardless of brand has said "not for fall arrest." Or something along the lines of not for falls of greater than 4 feet. Anything that is only supporting your waist I cant imagine to be claiming that is it useful for fall arrest, only with a dorsal attachment and upper body restraint would I consider something for fall arrest.

All I ever imagine with taking a fall in ANY arborist saddle is falling backwards and having your upper body and legs snapped back behind you and potentially breaking your back. Gives me the heebie jeebies.
 
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