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Old 04-07-2009, 12:08 PM   #1
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Are Jack Studs Necessary


Hello,

We are putting a pass-through (~36 inches) on a load bearing wall between our family room and kitchen. I know we need to add a header. But I'm wondering if just nailing the header into the adjoining studs is sufficient, or if jack studs are necessary.

Follow on question, is there ever an instance where jack studs are not necessary when putting in a header on a load bearing wall?

Thanks!

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Old 04-07-2009, 12:24 PM   #2
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Are Jack Studs Necessary


Absolutly!! Here's some good information in why. http://www.taunton.com/finehomebuild...amed-wall.aspx

If your asking because of limited space for a jack stud, re-think the opening size to accomodate the jack studs. They are a must .....load bearing or not.

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Old 04-07-2009, 12:24 PM   #3
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Are Jack Studs Necessary


Nails have no real sheath strength. That is why a jack stud is needed. Keep in mind you also need blocking under this jack stud on a bearing wall to keep the weight transferred down into the foundation. This needs to have solid bearing all the way.
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Old 04-07-2009, 12:48 PM   #4
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Are Jack Studs Necessary


The only case I can think of where a jack stud might not be needed:

If double floor joists run across the opening above to carry the load. And possible an engineer would need to evaluate & sign off - in that case you might not need a header
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Old 04-07-2009, 05:26 PM   #5
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Are Jack Studs Necessary


You need to figure out how much load it will be carrying. Carry the load directly through the floor system below, as Bob said.

Yes, a few instances. A Simpson: HUC412-concealed flanges hanger would work, with nails. (2400 lbs.)

Or, a Simpson: HUCQ hanger works, with special screws. (-5000lbs.) http://www.strongtie.com/products/co...C-HUCQ_SCL.asp

With both you need a 4x4 to act as the king stud. So, if you cut the walls back for posts, easier to cut the kings off to make them trimmers, and run the header to the next studs back. Be safe, GBR
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Old 04-07-2009, 08:54 PM   #6
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Are Jack Studs Necessary


needed

Last edited by II Weeks; 04-08-2009 at 05:36 AM.
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Old 04-13-2009, 10:34 PM   #7
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Are Jack Studs Necessary


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Old 04-15-2009, 05:38 PM   #8
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Are Jack Studs Necessary


Quote:
Originally Posted by Bob Mariani View Post
Keep in mind you also need blocking under this jack stud on a bearing wall to keep the weight transferred down into the foundation. This needs to have solid bearing all the way.
Sometimes this is true. For a 36" opening in a house he does not need to do this. the bottom plate will transfer the load adaquitly, unless maybe he has a safe or somethin sitting on top of it.
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Old 04-15-2009, 05:50 PM   #9
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Old 04-15-2009, 06:01 PM   #10
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Are Jack Studs Necessary


It is that kind of question that makes you wonder when you go buy a home....

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