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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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Steel strength charts
I'm building a lift, probably 1,000 $ max, but mostly 500 or less. Is there
a chart that gives different structural configurations and their relative efficiencies? i.e. .............. a bar joist design a pyramid with lifting point at the apex two poles with a right angle peak point of attachment and one horizontal purlin a plain truss shaped span, pitched to the roofing, with diagonal bracing ............ 16' wide span, verticals 8', then up with the framework. I actually need two so I can lift my boat entirely with straps. Weight of boat, about 1500#. I have been googling, but no luck yet. Material would be 3 x 3 x .120" tubing MIG welded together, and gusseted mostly wherever possible, and lateral bracing to help side loading. TIA Steve Heart surgery pending? Read up and prepare. Learn how to care for a friend. Download the book. http://cabgbypasssurgery.com |
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