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Old 04-09-2011, 09:06 AM   #1
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Span for an I-Beam


I have a friend who just bought a house. He has a steel I-Beam that sits on a span of 11 ft. He want to move it to a span of 14 ft. The beam is 6"x8". Will the extra 3 ft make a difference or can a beam of that Dimension be spanned to 14 ft.

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Mike

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Old 04-09-2011, 09:14 AM   #2
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Span for an I-Beam


It all depends what the load on the beam is.

The new location must have decent support and not just a concrete slab.

Dick

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Old 04-09-2011, 09:41 AM   #3
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Span for an I-Beam


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Originally Posted by concretemasonry View Post
It all depends what the load on the beam is.

The new location must have decent support and not just a concrete slab.

Dick
Hi there Dick.. I appreciate the info.... He does have a second storey but the way I'm looking at the structure it doesn't look like a serioous supporting beam..but I did tell him he would have to break through the floor ...Would he have to dig down or what would be the process for the base support...If ya don't mind me ask'in...

Mike
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Old 04-09-2011, 09:47 AM   #4
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Span for an I-Beam


Steel I beams get their strengths not only from H X W but also in the thickness of the steel.

That's why steel can be so useful when it comes to height restrictions.
Need a longer span with the same H X W? get a thicker gauge steel.
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Old 04-09-2011, 01:01 PM   #5
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Span for an I-Beam


Thanks for the reply... it sounds true and great only the beam is in place adn the house has been built... He want to move it for his pool table...would you know what a conceivable span that would be allow for a 8" I-beam... he just has to make the 14 ft mark..

Thanks
Mike
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Old 04-09-2011, 01:17 PM   #6
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Span for an I-Beam


Not knowing all the variables surrounding the increase in span and existing load will certainly and completely ensure no reasonable answer can be arrived at here.

Simply put you are increasing the span by 22% I doubt very much that the beam was sized with this kind of safety factor, there are however ways to reinforce a beam to allow for this increase in span.

All you need to do is call your local freindly engineer and have him or her design the reinforcing (if required) as well as, detailing the foundation required for the reloacated bearing point.

Mark
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Old 04-09-2011, 04:09 PM   #7
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Span for an I-Beam


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Originally Posted by Casper6620 View Post
Thanks for the reply... it sounds true and great only the beam is in place adn the house has been built... He want to move it for his pool table...would you know what a conceivable span that would be allow for a 8" I-beam... he just has to make the 14 ft mark..

Thanks
Mike
The beam could haver been designed to only span 11'.......no one here can possibly tell you if you can increase that span to go 14'. Only an architect or engineer can.

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