## Re: [Hammock Camping] Re: Speer ridge line

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• Forgetting about the trees, what s scary to me is that these force numbers are not particularly bounded but the strength of the components do have bounds. In
Message 1 of 37 , Jan 11, 2008
Forgetting about the trees, what's scary to me is that these force
numbers are not particularly bounded but the strength of the
components do have bounds. In the final analysis, I would want to set
up a hammock with a structural ridgeline like it didn't have a
structural ridgeline unless I couldn't tie it off that high.

Dave

Thanks Dave and Tim,

I'll look at your thoughts when I get home tonight.
For those of you with an engineering bent...

What we are doing is calculating the various forces by doing free body
diagrams of the connection at the tree and at the ridgeline junction. Basic
Statics.
Note: as you get less and less sag, the forces approach infinity. :]

Anybody else wanna play?

Does anybody have any numbers about how much pressure it takes to crush the
bark of a tree?
I guess I could dig up a penetrometer and try it. :]

Ralph

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• I updated the file I previously posted by including some sketches to help explain what I said. It messes up the previous link but it is the same name under
Message 37 of 37 , Jan 16, 2008
I updated the file I previously posted by including some sketches to
help explain what I said. It messes up the previous link but it is
the same name under Youngblood's folder and this should be the link

http://f1.grp.yahoofs.com/v1/8BuOR_aqY-p99MHhoq9u40Wsacy4XOTpIn-o2G5KOtGM3Qmc5TVomj0dsM1O-YgxdlduT1FrTAl5pfYja8Sy1M4AvkWhng/Youngblood%27s/Structural%20Ridgelines-%2001162008.doc

Dave
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