Fasten wood to HSS beam

[JStructsteel]

Whats the goto way to fasten a 2x to a HSS beam? I was thinking a self tapping screw, but the HSS is 5/16" thick. Predrill and self tap? Blindbolt? Powder actuated fastener?

 

[phamENG]

Simpson has wood to steel screws, but 5/16 may be more than they can handle. PAF with a built in washer could be a good option.

 

[XR250]

I've used them on 1/4" on my house. Takes about 30 seconds each but they went in. You can also have the fabricator weld studs to the member.

 

[JStructsteel]

Thanks, will check out Simpson. I could specify desired strength, and let the contractor decide too.

 

[phamENG]

I could specify desired strength, and let the contractor decide too.

I don't like that idea. There are too many factors at play and even a contractor that is trying to do it right is unlikely to get all the pieces correct. I also think it's best to provide a connection design upfront. If you don't, the contractor can just say "there's no hardware that works here" and you're immediately on the defense to prove that you're not an idiot.

 

[JStructsteel]

PhamENG, thanks, that makes sense. I did find a Simpson screw thats good for up to 15/32 wood to steel, will go with that one.

 

[Tomfh]

Glue and screw.

I’d say they’ll be predrilling that wall thickness.

 

[azcats]

My first thought was welded, threaded studs. Little bit of fab shop work but time saver for the framers.

 

[jittles]

My first thought was welded, threaded studs. Little bit of fab shop work but time saver for the framers.

That's our standard way of detailing it.

 

[CURVEB]

My first thought was welded, threaded studs. Little bit of fab shop work but time saver for the framers.

My thought too. You could also do Nelson studs that are threaded and probably take care of it on-site:

https://www.grainger.com/product/12...4d810df555a41c84f38f69db461b9d9e&gclsrc=3p.ds

 

[dik]

I've done Nelson studs... put the lumber on top and smack with a hammer to mark the stud locations... works pretty well.

-----*****-----
So strange to see the singularity approaching while the entire planet is rapidly turning into a hellscape. -John Coates

-Dik

 

[jerseyshore]

If this is not taking any load, I see most guys using Ramset PAF's for attaching nailers to steel. The framer at my house didn't even have the gun with him so he just sent a guy up there to hammer them in by hand. Didn't take very long and I ended up specifying those a lot for top flange nailers and the like.

 

[JStructsteel]

Its one beam, maybe 15 screws. Should not be a big deal.
Thanks

 

[Aesur]

Our standard is threaded studs, however I have occasionally allowed for PAF's if the load allows.