I uploaded a spreadsheet to the Files section (
idgeline.xls ) where I try to show what my concerns are with some hard
numbers. Obviously I had to make a few guesses and approximations,
but I believe the general jest is correct and is something to be
concerned with. For instance, I don't think you want to just tie a
hammock with a structural ridgeline off at some height and then
tighten the suspension lines until it hangs at the height you want
without taking into consideration the distance between supports. The
sloppier one is with selecting that height, the higher their
likelihood of ending up with some very high forces.
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.
--- In firstname.lastname@example.org
, "Ralph Oborn" <Ralph.oborn@...>
> A structural ridgeline allows the hammock suspension line attached at
> the tree to be at an angle less than the hammock sag angle...
> Thanks Dave,
> Yes, I've done the statics with free body diagrams also.
> Now I see what you are thinking and I agree.
> [Non-text portions of this message have been removed]