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screw shear test?

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Forum topic by Belg1960 posted 381 days ago 573 views 0 times favorited 5 replies Add to Favorites Watch
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Belg1960

786 posts in 1662 days


381 days ago

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

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poopiekat

3556 posts in 2331 days


#1 posted 381 days ago

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!!

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widdle

1328 posts in 1595 days


#2 posted 381 days ago

Nails bend..Screws snap..

View distrbd's profile

distrbd

994 posts in 1043 days


#3 posted 381 days ago

Here’s a drywall screw test:

http://www.youtube.com/watch?v=lldPT_u5hwE

-- Ken from Ontario

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devann

1735 posts in 1289 days


#4 posted 381 days ago

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

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Belg1960

786 posts in 1662 days


#5 posted 380 days ago

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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