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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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Data needed
I want to put up eight three inch square by .120" thick posts twenty feet
long, about two foot into concrete piers. Four of them would form a 7' square in the center, the other four would form a larger square of about 15". I want to stand them on end. This is for a hot tub/observation platform. Where can I find the compression strength of that tubing? I'm sure this is going to be way strong enough, as the spa is about 300 gallons. So, that's a little under 3,000# for spa and water. There would be multiple bracing on the posts, both to each other, on the horizontal and on the diagonal. I believe a simple box with an X in the middle would give it sufficient strength to keep any lateral movement to a minimum. 1/4" would be over double the price, and overkill, IMHO. Steve |
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