Can Drywall Studs be used in Tension? 2

[structuralengr89]

Can drywall studs which are non-structural/non-load bearing be used in tension. Specifically these studs:

https://www.clarkdietrich.com/products/prostud-drywall-framing-system#description

I have a project where a contractor has hung very large sections of wall from the roof deck. The work is outside of my scope, but I pointed out to the architect that a specialty engineer should take a look at it. The walls are 20' tall with gyp and hung from an existing building with unknown deck gage or deck condition.

Thanks

 

[skeletron]

From CSA S136-12 (AISI S100-12)
Tn = Ag Fy
Tn = An Fu

But 20ft wall @ 6-9psf (studs+gyp either 1 or both sides) is about 180plf max. So, my question would be how are they hanging it from a deck. A #10 screw only takes about 50-100 lbs in tension for standard 20 or 18 gauge deck.

The studs should also be braced or work for 20ft @ 5psf pressure.

 

[phamENG]

Saying a "drywall" or "nonstructural" metal stud is non-structural is a lot like saying a No. 3 Southern Pine studs are non-structural. Are they capable of doing very much? No. That's why we don't use them in load bearing applications. But can they do nothing? Of course they can do something. They have to resist minor vertical loads and, as skeletron mentioned, lateral loading from at least internal air pressure variations and also from seismic loading. They have an area, they are made of a steel of known strength, you can calculate a tensile capacity.

 

[jayrod12]

Man, that is a fast way to have no one respond to you.

And if I'm being honest, I'd bet those studs do have the capacity to do what they need. The other items you mentioned, I.e. fasteners, roof deck, roof joists, would be a problem regardless of the stud type.

Now I believe you owe Pham and apology because your response is not acceptable.

 

[phamENG]

structuralengr89, not sure why you removed your post. For discussion's sake, I'll put it back for you:

The product manufacturer Clark Dietrich calls them NON-STRUCTURAL

https://www.itools.clarkdietrich.com/submittalpro/...

Your comment regarding #3 southern pine is ignorant. I have a situation where a contractor has hung a 25 guage track and 25 guage NON-STRUCTURAL stud per the manufacturer from and existing roof deck. It also supports a horizontal platform of wood and other architectural items totaling about 30 psf. The roof bar joists in this area have a capacity of about 40 psf. So it does not meet the building code. I am trying to determine if he should have used a type S (STRUCTURAL) stud.

I can easily check the tensile capacity with the area and yield strength of the stud...and then the hundreds of screws that would be required.

There used to be intelligent and experienced engineers on this forum a few years ago...If you don't have intelligent replies...STFU

So...in your original question, you asked if a "non-structural" stud could be used in tension. That implied that you were under the impression that a "non-structural" stud lacked the ability to support loads. If I was mistaken there, I apologize. Was comparing the member used in light gauge framing for non-structural walls to a member used in light frame wood for non-structural ignorant? I don't really think so, but admit it wasn't a great comparison.

Your original question didn't mention the platform and all of that - just asked if you could use the stud in tension. So did the installed stud work in tension? What about the connections? If the roof framing that was supporting it couldn't support the added load anyway, how would using type S studs change things?

 

[Tomfh]

Might be worth starting this thread anew...