Re: Load rating on I-Beam

Posted by JDknut on January 10, 2007 at 04:24:25 from (152.119.204.87):

In Reply to: Load rating on I-Beam posted by 4020 on January 09, 2007 at 18:30:00:

Billy has it right. You should have an engineer look at it, perhaps your local steel service center has one on their staff. In a beam application, the beam is sized by the moment or bending force applied by the load. That beam of yours looks like a W12x26. In A36 structural steel, a W12x26 beam has an allowable moment of about 67 kip-ft ( a kip is 1000 lbs) at an unbraced length of 7 ft. I can already see that a 30 ft unbraced span is too long for any kind of useful load, you would have to give it lateral support at no more than 7 ft.

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