Shelf Support Steel Angle Fastened to Cold Form Exterior Stud for Brick Veneer

[Hunter90]

Hi all,

Quite frequently there have been times where brick veneer support is missed and we are having to use the existing cold form exterior studs to fasten an angle to, to pick up brick veneer.

Couple questions based on this condition is

1. Through bolts to go through only 1 flange or extend through both flanges?
2. Do you need to have 2-through bolts with a distance d between them? Or does 1 bolt in tension and the compression is taken by the bearing face of the vertical angle leg (see image below)?
3. International Residential Code (IRC) R703.8.2.1 Support by steel angle specifies the use of a 4"x6"x5/16" into a double 350S162 cold-formed steel studs at max 16" o.c. with two 7/16" bolts with washer.
   1. What is the min. thickness for a 3.5in deep stud? is it a 350S162-33 (20 gauge)?
   2. Are the double 350S162 in the IRC meant to be back-to-back studs? Or boxed stud?
   3. Do the through bolts only go through 1 flange or extend through to both flanges?
   4. If it is back-to-back studs do you put 2-through bolts per stud flange i.e. 4 bolts total for a back-to-back condition? And is the orientation of the studs as shown below with a vertical distance d between the bolts?
   5. 

Please let me know as figuring out the local crippling/buckling of the flanges is uncertain for me. Or what is best practice in terms of design and analyzing/calculating?


I look forward to hearing from you,
Thank you.

 

[DaveAtkins]

I have never used bolts to connect a brick veneer shelf angle to cold formed studs. I have always used welds.

It is best to weld vertically, to the web, not horizontally, to the flange, because the flange can bend due to the tensile component of the moment.

 

[XR250]

I have never used bolts to connect a brick veneer shelf angle to cold formed studs. I have always used welds.

It is best to weld vertically, to the web, not horizontally, to the flange, because the flange can bend due to the tensile component of the moment.

I agree with this. Can't imagine the bolts ever lining up either. Probably need 16ga min. studs to actually get a decent weld though. I would use a loose lintel where possible.

 

[Hunter90]

I have never used bolts to connect a brick veneer shelf angle to cold formed studs. I have always used welds.

It is best to weld vertically, to the web, not horizontally, to the flange, because the flange can bend due to the tensile component of the moment.

Thank you,

Definitely agree about the vertical weld along the web will be able to resist the bending. Will have to look up cold form welding for weld sizes etc.

 

[Ron247]

XR50 & DaveAtkins: I have never had to attach a lintel to cold-formed studs, but other than alignment of the fasteners to the studs (especially on a rake), are there any other reason's you guys prefer welds to fasteners?