[walter]

Thanks, I find these posts very helpful.

Gerry,
re: Beam supports

My concern is about the supported beam.. If your garage concrete floor moves 0.5" the whole structure will move with it?

[ger21]

If your garage concrete floor moves 0.5" the whole structure will move with it?

Whenever possible, it's a good idea to have machines on a single slab, and not span any concrete joints. But that's probably not an option with a 16' span. I doubt a floor in a heated garage would move much though.