QUESTION
Does anybody have a good design example of bending of a screw at a stucco gap.
I’ve always calculated fb= v/a+ M/S
for a reduced circular section, which very rarely calculates for anything less than a 3/8" anchor.
Commonly contractors want 1/4-20 screws, any advice on how to make it work?
REPLIES
jdgengineer
What’s the application? Simpson Strong-Tie does make Drywall hangers that are intended to be attached to outside of (2) layers of 5/8" sheetrock. They are installed with SDS screws. Simpson may have some allowable values they can provide for this instance.
As an aside, from a waterproofing perspective it’s generally a bad idea to screw through the stucco. The stucco really should be removed, a ledger hard mounted to the framing and proper flashing installed. Screwing through the stucco is a recipe for a leak in my opinion.
If this is for a deck installation, I personally would not allow the stucco to be between the ledger and the framing. I would require removal.
SOURCE
https://www.eng-tips.com/viewthread.cfm?qid=420876
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