PE - Ropes or not to rope!

[david friedman]

At 12:17 PM -0500 10/4/00, Carl Chipman wrote:
>Ok, I also have a question about this....
>
>you say "If you make a spoke wheel tent they are top heavy and they can
>come down."
>
>I say back to you that they are no top heavier than another round tent.
>  After our conversation on the phone way back in may, I did a lot of math,
>and although it is not available now I'll find it again and post it
>sometime.
>
>Some supporting thought:
>
>1) We cut out the spoke and the wheel poles for a center pole pavilion.
>  They hub weighed about 2 lbs, and the spokes each bout a pound and a half.
>  For the 12 spokes then, thats a total of twenty lbs.   This weight might
>be an over estimate.
>
>2) The design that we are doing has the center pole with a height of 13 ft,
>and the spokes to fit @ 7 ft up.
>	a) This is approximately one half a foot above the center of gravity of
>the pole.
>	b) Additionaly, the torque generated from each spoke is 
>counterbalanced by
>its counterpart on the opposite side of the pole.
>	c) The weight of the canvas pulling downwards will probably 
>generate more
>torque than the spokes and hub.
>
>Marguerite, I feel that the addition of the spoke hub does not make the
>design any less or more safe than the standard central pole pavilion.  The
>additional weight (which I think I have overestimated)

  ...

I think so too. You can do a spoke and hub with about at 6"x6"x1 3/4" 
hardwood hub and 1x1 (actually 3/4x3/4) hardwood spokes. I haven't 
weighed them, but I'm sure it's well under twenty pounds.
-- 
David Friedman
Professor of Law
Santa Clara University
ddfr at best.com
http://www.daviddfriedman.com/
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