Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

ZIP PANEL SHEAR WALLS

ejlorvig

Structural
Jan 22, 2025
1
USING 2" ZIP EXT. SHEATHING
Proprietary values indicate 1 1/2" penetration needed into stud.
This would mean a 16d required.
For the shear values needed I would need to use 3" edge spacing.
QUESTION:
Is there any info on blocked values for proprietary Zip panels
Are the Zip panel allowed to increase by 1.4 for wind? (not indicated in proprietary litterateur)
Has anyone "flipped" the Zip so ply in touching studs?
Thanks
 
Replies continue below

Recommended for you

Yes, you would need a minimum nail length of 3.5" with a shank diameter of 0.131".

Blocking is required to achieve the values listed in the manufacturer's literature.

I'm not aware of there being an increase of 1.4 for any reason.

You should definitely not "flip" the panels. That would defeat the purpose of using them. In that case, it would be better to use conventional plywood or OSB and then add a layer of 1.5" rigid insulation on top. Or you could use plywood/OSB with Zip-R over it.
 
Man I hate 2" Zip. I don't trust those "laboratory shear values". I will typically use 1/2 OSB and then 1 1/2" ZIP on top at braced wall panels so it is the same depth as the adjacent 2". Make sure you read the crap out of the ESR. There is always a bunch of fine print.
 
I'm not aware of there being an increase of 1.4 for any reason.

Generally the factor of allowable shear Wind to Seismic is around 1.4. NDS currently lists both wind and seismic allowable shear capacities, but once upon a time, back when IBC included shear wall values in their tables, only one value was given and there was an allowable increase of 1.4 for wind.
 

Part and Inventory Search

Sponsor