Maximum span for (2) 2x6 beam

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Old 11-13-17, 06:42 AM
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Maximum span for (2) 2x6 beam

I need to determine what the maximum span is for a double 2x6 beam that will support 2x6 ceiling joists. The joists will have a span of 12', be 12" O.C., and hang from a ledger on one side and the beam on the opposite side. The beam will have a span of 12'-6" and be supported by posts on either side. I was able to find a few references for joist spans, but it isn't clear how these relate to beams.
 
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Old 11-13-17, 08:37 AM
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Maybe enough to hang a certain somebody, lol! I know I'd be tempted!
 
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Old 11-13-17, 08:56 AM
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Talking

Very funny Surprisingly, they have been very patient and accommodating. Primarily because all of their screw-ups and because I have been correct 95% of the time. I wouldn't want to be in their shoes.
 
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Old 11-13-17, 11:01 AM
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I wouldn't want to be in their shoes.
Couldn't have said it better myself.
 
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Old 11-13-17, 11:04 AM
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I wouldn't want to be in their shoes.
Me neither!!!!!........................................lol
 
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Old 11-13-17, 12:21 PM
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A double 2 x 6 is not a beam (possibly a built-up beam), it's a header, typically used above windows and stuff.

If I may make a suggestion, you need to start trusting your builder and the approved plans or just tell them to hit the door running.

The reason you can't find span tables for beams like this is because you need to know all loads to calculate, every house is not the same.
An architect would look at the roof, floors above and any other factors........... they need to see floor plans.
 
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Old 11-13-17, 03:00 PM
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Well, if this was a deck... the allowable span of the beam would be 3'7" if using SPF, or 4'7" if using SYP... based on table 3a of the DCA6.

You say it's a ceiling. What is this ceiling rated at... and will it ever be used as a floor?

I also question why in the heck you aren't consulting your set of plans or your architect.
 
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