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Bridge Construction question
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Posted by Ron (Tex) on July 06, 2005 at 11:37:59 from (139.169.216.143):
I was given a mobile home trailer frame that was 76 feet long. I plan to cut it in half so that I will have four I beams sections to place across a creek that is about 18 ft from one bank to the other. The frame is an I beam that measures 12 inches from flange to flange but is fairly thin guage steel. I would guess that the thickness is 3/16 inch.
Question: without any support in the center, how would one calculate the loading that can be safely placed over the center of the span?
If need to, I can weld sections of angle under the bottom flange to gain greater support.
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