So, if I was to glue a 2x6 to the bottom of my beam what glue would I use that would be strong enough?
Polyurethane construction adhesive would do the trick. This is the stuff I have used for similar tasks: http://www.stickwithpl.com/Products/...PLProductID=14
. I bought it at Home Depot.
You'll need to hold the 2x6 in position against the bottom of the steel beam while the adhesive cures. You can use a bunch of clamps if you have them, or you could cut some 2x4s to wedge between the floor and the beam/adhesive/2x6 sandwich.
And, then the wall constructed underneath that would have another top plate, correct.
Still having trouble seeing how to do the rsic clips.
It should work exactly as you originally planned, except that instead of fastening the RISC clips directly to the steel beam, you will be fastening them to the 2x6 that you have glued to the bottom of the steel beam.