Hi, Brian. I'll tell you how I did mine and you can go from there. I drilled the floor for expansion screws and put a 2x4 sole plate down. Then, I cut studs a little longer (about 1/16") than the distance between the sole plate and the 2x4 top plate under the steel beam. Have someone hold the top plate up while you drive the stuts into a vertical position then toenail the studs. There is so much force from the long studs that the wall does not move. I guess that I could put in nuts and bolts but I didn't and don't think that you need to if you have enough force holding the studs in. My wall has been up 15 years with no problem even at the doorway. By the way, I cut the door opening in the sole plate after everything else was up. I don't think that you can do this with steel studs but I think that there are brackets that you can get for them.