screw shear test?

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Forum topic by Belg1960 posted 07-07-2013 11:37 PM 1051 views 0 times favorited 5 replies Add to Favorites Watch
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1062 posts in 3033 days

07-07-2013 11:37 PM

LJ’s, I used to watch Holmes on Homes all the time and he used screws to build alot of his stud walls. That being said he went to do a house in California and was told that he had to use nails because there were no screws that were rated for the shear of their earthquake building codes. Have any of the newer generation of screws now been rated for this application? Also just watched an episode of Ask This Old House and Tom(carpenter) said pretty much the exact thing that the screws were not rated for shear. Thanks Pat

-- ***Pat*** Rookie woodworker looking for an education!!!

5 replies so far

View poopiekat's profile


4349 posts in 3702 days

#1 posted 07-08-2013 12:14 AM

Interesting question!
Yeah, perhaps not a good idea for structural uses…
Odd how if drywall screws only hold sheetrock to the studs, how shear resistance is important. During an earthquake, the last thing to worry about would be a hunk of sheet rock falling on me!

-- Einstein: "The intuitive mind is a sacred gift, and the rational mind is a faithful servant. We have created a society that honors the servant and has forgotten the gift." I'm Poopiekat!!

View widdle's profile


2069 posts in 2967 days

#2 posted 07-08-2013 12:16 AM

Nails bend..Screws snap..

View distrbd's profile


2252 posts in 2414 days

#3 posted 07-08-2013 12:43 AM

Here’s a drywall screw test:

-- Ken from Ontario, Canada

View devann's profile


2246 posts in 2660 days

#4 posted 07-08-2013 01:04 AM

ditto what widdle said.

I recently needed structural screws for a joist hangers I installed in a friend’s home. The framing had been improperly done where a metal chimney flue passed through the roof. There was no way to get at one of the hangers I wanted to install to use nails. On a trip to the big Orange home improvement store for hangers and nails I discovered that Simpson now offers structural screws for their products. You can get them next to the joists hanger nails.

-- Darrell, making more sawdust than I know what to do with

View Belg1960's profile


1062 posts in 3033 days

#5 posted 07-08-2013 10:44 PM

Thanks for the info guys, I knew the nails were much better for give as opposed to the screws. Was just wondering if they had come up with newer technology for a screw with the same give.

-- ***Pat*** Rookie woodworker looking for an education!!!

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