I have a two story building with brick veneer. Arch wants a shelf angle at the top of the second floor windows. Most windows are 15' wide, so I am using a HSS header and jamb system at these openings and will connect my veneer support angle to the HSS header. However, I have some openings that are just 10' wide where I am using a typical light ga. header and jamb system (with the same veneer support angle). Distance from the outside edge of metal stud to outside face of veneer is 6.625". The studs "by-pass" the second floor slab so they are not supported vertically by the second floor framing. Questions are: 1. Where I do not have any headers (HSS or lt. ga.) and will be connecting my shelf angle directly to the stud. Is it okay to weld to 16 GA studs with a 1/8" weld? Also, any suggested details for this? I have about 11' of veneer from the top of opening to the top of parapet, giving about a 600# load to the stud. 2. At the light ga. headers (10' openings) would you screw the shelf angle to the lt. ga. header? I'm using the following boxed header: (3)-1000S162-97 with 600T200 top and bottom member. Thank you and have a great day.