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beam bridging question

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Posted By<" ">Randy on March 03, 2002 at 10:11:39:

If I take a beam such as an I-beam, say 10 feet long. I support the beam at each end, and place a weight in the center. I will get a deflection based on the section modulus and the wonderful calculator provided at this web site. The question is: If I bridge the beam under with one length of bar wrapped and welded to the ends to form two 30/60 triangles with the apex under the center of the beam. I place a pillar between the center of the beam and the apexes to form the apexes. This pillar is fit to load the triangles. How much does it strengthen the beam by this bridge and what is the formula to achieve this data?

My dusty books just don't jog my mind on this one.


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