It seems that most people who write about building their shop have something over a concrete slab. It's good for heating and has other advantages.
I was in a shop which was the second story of an old barn. The shop had a wooden floor. The advantage of a wooden floor for a second story shop was that dust collector pipes, and electrical wiring were all under the floor. A pipe came off the back of the tablesaw and dove straight into the floor. The same arrangement on all tools made the floor easy to configure and easy to change. All ductwork was under the floor and therefore easy to handle and to avoid.
Wouldn't a single story shop with basement and wood floor above the basement be easy to setup and easy to change the setup as well. If so, why have so many preferred the slab?
John Neel