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Looking for Skewed Strap Between Beam and Shear Wall

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MinaHani

MinaHani

Structural
Jul 30, 2022
1
Hi everyone,

I have wood building in which an inclined beam works as a drag strut to transfer the diaphragm shear forces to the shear wall as shown in the attached snapshot.

Snapshot_bnnwk2.png


The axial force to be transferred is about 3 kips
I'm looking for a skewed strap / tie connection that can transfer this force (The one shown in blue in the snapshot).

Does anyone have a suggestion or can advise me what to use please?

Thanks in advance
 
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That either needs to be a custom steel weldment/fabrication (so it can resolve the eccentricity) or it needs to be multiple straps.

Screenshot_2022-07-30_121402_ehk7g4.png
 
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skeletron - those straps aren't meant to be bent like that, though. You end up with a prying force on the nails just past the bend as the strap tries to straighten itself out.
 
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@phamENG: Yep. Good point. Maybe it could be extended to the point where the interior pry nails are neglected in the capacity, and then make sure you have enough nails on either side. I don't see many custom weldments in this application, so my suggestion was a "make-it-work" solution, maybe not my first course of action in new construction. It would be interesting to know the surrounding arrangement.
 
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Best to take the load into the faces of the header as Pham showed.
 
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Is the load on the wood beam in tension or compresson? If compression, it might be better to square off the end? [pipe]

So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik
 
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(2) L90's each side of the beam at the joint
or
Angle at wall corner with kerf plate. Screws to U/S wall and nominal connection to end wall
 
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I don't think L90's have that kind of capacity
 
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I would do what pham shows for tension.
Maybe let in the beam a bit for compression?
L90s would work for low compression loads if they fit, but not for 3 kips. And they probably don't fit.

 
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Yeah, that tends to be a pretty awkward condition spatially. If you have the available wall space for it, you might transfer diaphragm your way over to the shear wall as shown below. If it's a full height bay window situation, not so much.

Pretty much any axial connection between the sloping collector and the beam / over the shear wall will put that beam into a tension perpendicular to grain condition which nobody loves. You might make it work by the numbers but it's still pretty icky.

C01_uvasoo.png
 
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Any chance you can make the beam the same width as the wall and carry it over top as shown below?

Snapshot_bnnwk2_fvextx.jpg
 
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