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Old 03-20-2011, 06:34 PM   #1
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Double 2x12 floor joist.


Currently my floor-plan is 20 ft wide my second story is 2x12x20 12" O.C southern pine grade 2. I would like to stretch the building to 25' Can i double up 2 2x12x20's on 16" O.C. for my floor joist.

Cost is the factor here the I beams for 25' local are 143 and floor trusses are 164. 2 2x12x26's are 43 bucks huge cost savings

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Old 03-20-2011, 06:53 PM   #2
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Double 2x12 floor joist.


Iíve yet to find a board stretcher that works.

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Old 03-20-2011, 06:57 PM   #3
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Double 2x12 floor joist.


Quote:
Originally Posted by INFALLIBLE1 View Post
Currently my floor-plan is 20 ft wide my second story is 2x12x20 12" O.C southern pine grade 2. I would like to stretch the building to 25' Can i double up 2 2x12x20's on 16" O.C. for my floor joist.

Cost is the factor here the I beams for 25' local are 143 and floor trusses are 164. 2 2x12x20's are 43 bucks huge cost savings
This post has to be a joke, right?
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Old 03-20-2011, 07:02 PM   #4
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Double 2x12 floor joist.


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Originally Posted by kwikfishron View Post
Iíve yet to find a board stretcher that works.
my bad i put 20 instead of 26' foot. 26 foot 2x12's are 21.50 each
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Old 03-20-2011, 07:03 PM   #5
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Double 2x12 floor joist.


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Originally Posted by Joe Carola View Post
This post has to be a joke, right?
fixed the typo in OP
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Old 03-20-2011, 07:11 PM   #6
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Double 2x12 floor joist.


douglas fir larch 2x12 will span 24' 8" on 12" centers 40psf live 10psf dead so with a overall width of 25' seeing that my joist sit on top of my header my span between walls is 24'1" im good to go.
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Old 03-20-2011, 10:34 PM   #7
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Double 2x12 floor joist.


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Originally Posted by INFALLIBLE1 View Post
fixed the typo in OP
I don't think that was the issue.
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Old 03-20-2011, 11:00 PM   #8
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Double 2x12 floor joist.


Yup, that's what the span tables say, 24' 2" southern pine #2 @12" O.C.

Andy

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