Calling out cold formed column

[JStructsteel]

I have a cold formed metal beam supported by cold formed studs (column)I am calling it out as (2) S200-43 studs boxed together W/ 1 full height S200-43.

Is there a better or proper way to call out a boxed column or gang of studs?

 

[XR250]

Can you provide a pic of your column?

 

[Celt83]

Your missing the stud depth on your call out (600S200-43) Boxed implies the flanges are touching and interconnected. If you have more than two elements for the built up then I’d recommend including a quick plan detail with the call out showing the configuration you want. Usually also include typical details for various build ups with the interconnection requirements.

For posts I tend to lean towards back-to-back studs so their webs reinforce each other for crippling and the interconnection is simpler since its screws through the webs, then if need more capacity or a flat face for finish at a door jamb you can cap either end with a track.

 

[JStructsteel]

XR250, boxed like Celt83 shows.

Celt83, you are right, they are 362S200-43. I boxed them for the capacity needed.

Thanks

 

[XR250]

Do you actually need 3 members? A back to back stud has pretty significant capacity.

 

[Celt83]

JStructsteel:
Edit: Actually I would up the gauge to 68 max and just do back-to-back

If you truly need three members I would consider doing back-to-back studs + a track, this allows for much better interconnection for composite action:

 

[phamENG]

Boxed also means you either need a pair of tracks to complete the box and screw them together, or you need to field weld. If field welding, you'll need to have a minimum of 54mil, though I think 68 is preferred - don't quote on me it, though, it's been a while since I've had to spec that. There are also insulation issues if the wall will be insulated. They'll have to insulate it when the fabricate it, and inspecting that can be a hassle.

 

[XR250]

The installer I used to engineer for welded 18ga a lot. Takes special training, I believe. Unless there is a bunch of other welding on the job, I would try to use screws where possible.