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Old 08-02-2008, 03:00 PM   #1
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Exterior Load Bearing Wall Parallel to Joists


When an exterior load bearing wall is to be built parallel to the floor joist, and the band joist is supported by a cmu wall, do you still double the joist at that location?

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Sam

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Old 08-02-2008, 05:08 PM   #2
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Exterior Load Bearing Wall Parallel to Joists



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Old 08-02-2008, 06:11 PM   #3
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Exterior Load Bearing Wall Parallel to Joists


Thanks Bob - that's the way I remembered it, but wanted to verify. Heck, the last time I did this we didn't have black diamonds every 19.2" on our tapes.

-Sam
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Old 08-02-2008, 07:54 PM   #4
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Exterior Load Bearing Wall Parallel to Joists


Quote:
Originally Posted by samjack View Post
When an exterior load bearing wall is to be built parallel to the floor joist, and the band joist is supported by a cmu wall, do you still double the joist at that location?

Thanks,
Sam
Sam,

The answer is no. I'm a Framing Contractor and I've never once doubled the box. Why would you need to? Even with a 2x6 wall, you still don't have to double the box. Unless for some strange reason it's code where your from, but I doubt it.
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Old 08-02-2008, 08:37 PM   #5
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Exterior Load Bearing Wall Parallel to Joists


Gents:

I had to dig around a bit to find my notes re current local requirements:

Load-bearing walls parallel to floor joists (and beams) shall be continuously and directly supported by a subordinate bearing structure as in double joists, beams, girders, or other load-bearing wall.

It makes no exclusion for interior or exterior walls, but if I'm reading this correctly then the foundation wall is the "other load-bearing wall".

As a historical reference, a note in my 1976 residential construction manual states: "in new construction the outside joist shall be doubled."

Thanks again.

Sam

Last edited by samjack; 08-02-2008 at 09:05 PM.
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