I'm working in a commercial space where a previous tenant did some lousy remodeling. He framed non load bearing walls right up to the metal ceiling beams. The beams span 40 feet and the ac unit is on the roof, so there's a little bit of give in them. The sheetrock on the walls he framed is cracking, I assume because the beams are pushing down on the frame. I'm worried, too, about the long-term affect this will have on the foundation. I'd rather not rip out the entire framing and start over.
My question is, can I cut out a small gap -- like 1/4" -- on the top plate where it rests under the beam, thereby giving the beam a little breathing room?