when I built my shop 32x60 I poured the slab extra thick where I planed on putting the lift. I have 12'6" walls and the truss's are 15' tall in the center. worked prefect as the 12K lift was just under 15' tall after installation. I have one bay dedicated to the lift. My problem is where to store all the stuff, welders, plasma cutter engine hoist engine stands, ect. ect. being a retired auto mech I have tons of tools to store. used to park my daily drivers in the shop until my wife started putting her shi... in there, and the daughters crap.I think I need another shop built only twice as big. just remember build to build it twice as big as you think you need :,