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Simpson BVLZ

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XR250

XR250

Structural
Jan 30, 2013
5,275
So trying to use this on a project. Gotta love the CYA... How is the dimensional lumber house band shown going to resist cross grain bending due to the applied couple? I hate when they do this.

BVLZ_ct1kug.png
EE_wnbrkf.png
 
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AHJs in the Winnipeg area normally frown upon loading brick veneer... if that's what your sketch shows. I don't know about other jurisdictions... You should add posts or penetration of the veneer and try to seal it afterwards... not a good detail...

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

-Dik
 
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@Dik,

The idea is that is does NOT load the brick veneer. The device forms a tiny truss that cantilevers the load off the band - hence the cross grain bending.
 
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kissymoose said:
because our Simpson overlords say it's fine.
Click to expand...

But they actually say it is not fine in the footnotes
 
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Align them with perpendicular joists or blocking?
 
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phamENG said:
Align them with perpendicular joists or blocking?
Click to expand...
I wonder if they are trying to show that in the pic? Almost looks like the screw in entering the joist.
 
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Good point, XR. A quick check looks like you get about 540lbs in the compression strut based on their tables. According the APA tech note woodman posted in thread507-371840, the allowable bearing load for a 31/32" round peg on plywood should be at most 375lbs, much lower than that if you follow their 'recommended' values.
 
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Based on their CAD drawing, it is only 3/4"Ø. My suspicion is the brick ends up taking the gravity load when all is said and done.
 
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XR250 said:
But they actually say it is not fine in the footnotes
Click to expand...
Oh wow, that's awful, I hadn't noticed that.
That last page of your link XR250 has an A34 angle near the location of the lag screw. I wonder if the withdrawal of those angle screws can match the withdrawal of the lag screw.
 
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Thanks for all the info, pham
 
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Thanks for pointing this out XR. I really am not sure what to do anymore when I have another deck addition to a house with brick veneer. I feel like this connection relies on the brick. But the bricks a lot of times are only supported by angle and expansion anchors.
 
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Funny how code does not want framing loads on brick yet their deck fastening guidance pretty much guarantees it will.
 
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Yeah - they should be more explicit about it in the deck section. They make vague references to the 'primary structure' and don't show brick veneer in any of the code details, but you have to have almost the entire code memorized to know that it's not okay.
 
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Ledger failures, yes. Veneer failures, yes. But not at the same time.
 
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