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-   -   Exterior Load Bearing Wall Parallel to Joists (http://www.diychatroom.com/f19/exterior-load-bearing-wall-parallel-joists-24643/)

samjack 08-02-2008 03:00 PM

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?

Thanks,
Sam

Big Bob 08-02-2008 05:08 PM

:yes:

samjack 08-02-2008 06:11 PM

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

Joe Carola 08-02-2008 07:54 PM

Quote:

Originally Posted by samjack (Post 145271)
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.

samjack 08-02-2008 08:37 PM

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As a historical reference, a note in my 1976 residential construction manual states: "in new construction the outside joist shall be doubled."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


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