Do PBU Wall panels give shear value? How can I find this/Derive this? 2

[Revv]

Hey guys,

So basically question is the title, I am working on some roll-up storage buildings and have interior CFS stud walls. I see on past projects that PBU wall panels get called out as the sheathing, do these provide shear value? How can I find this? Not having much luck looking at it from the distributor website.

Thank you!

 

[dold]

I've done one mini-storage project like this. It was a nightmare. I think my "shearwall sheathing" was 29 gauge (!!!) PBU panels. And wall studs at like...5'-0" o.c. There are shear values for these panels. Super low values, but greater than zero. I don't recall where I found the values but it took quite a bit of digging. Likely some ESR report. Even worse was the "diaphragm". It's common to use plan bracing / diaphragm bracing made up of flat strap CFS for these structures. I was able to find shear values for the standing seam roof but it was like 5 (five) plf allowable. So we just ignored it and used plan bracing.

 

[XR250]

Maybe check this out...

https://www.nfba.org/index.php/reso...bas-revised-post-frame-building-design-manual

I think 100 plf is pretty typical

 

[driftLimiter]

Whats worse how do you get the R-value for these? I have seen people use the published diaphragm allowable strengths for shearwall applications. I'm not a big fan of the approach. On the storage facility I am working on I will call for 0.033" steel sheets at shear walls. If they want a PBU panel they can attach it on top of that.

 

[GC_Hopi]

Agree with above. Best to go with a separate system like bracing or steel sheets. PEMB typically go with a separate system and who am I to argue with that approach.

 

[dhengr]

Revv:
You go to the manuf’ers. of the wall panels (PBU, what’s that mean?, or whatever they are) and ask them for this info., if they want to be considered for your project. Plywd., OSB, and like products have that testing data and design values for their use. If they can’t supply that type of info. and testing data, they shouldn’t be selling to the bldg. industry, and won’t be allowed on your project. Then, if the Arch. or Owner are the ones pushing this product, tell them that all they are buying with that product is decoration, and they should get the design values ad ICC ESR report for you. Otherwise, you can’t use it for the structural design purposes, there is just nothing there of value on that account. There is so much unproven crap on the market these days, just to have another product to sell, and then it is left to you to prove that it works, or waste your time trying to make it work, or to assume the liability when it doesn’t. Much of this junk is riding on someone else’s testing and research, and then competing with the guy who actually did the work and the testing. All, so that the owner can save less in material costs, than it costs you to try to run it down.