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Old 01-28-2007, 11:00 AM   #13 (permalink)
patrick_g
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Join Date: Jul 2006
Location: South Central OK
Posts: 2,910
Default Re: What size beam do I need?

I have a friend about a mile from me whose driveway crosses a creek that makes his bridge over 30 ft long. He built it with frames from old mobile homes. It is the best and strongest DIY bridge I have ever seen. It doesn't mind any of his equipment or the 18 wheeler used to take his calves to auction.

Old mobile home frames are a good source of steel but I would be leary of any that were in a fire or that are very heavily corroded.

Pat
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