Posted 4/22/2009 21:43 (#689966 - in reply to #689878) Subject: RE: Engineering question...platform
Statesville, NC
I would guess the four 5" beams would be too weak for a 20' span. I think doubling the depth of a beam increases strength by 4 times. I'm thinking with 100,000 pounds you are figuring up to 45,000 on a tandem? I just can't quite see that much weight in the center of a 20' span of 5" deep beams.
Engineering question...platform
