As a structural engineer, I did the calculations before I built it. With a 9-ft lever arm to the resistance and a 1 to 2 ft lever arm to the load there is quite a mechanical advantage.?
One of my early installations was in my garage. I really loaded that one up, and if it failed it would have dumped the load onto my car (and even worse, onto my wife¡¯s car!)
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John Hinman
Boise ID
K700S and A941
