The plans call for control joints every 12 feet but the concrete guy
suggested going to joints every 10 feet. They are going to be sawcut
to a depth of about three inches. The slab and footing will be poured
in one flat monolithic pour. The concrete guy also suggested using
wire mesh reinforcing in the floor in addition to the fiber additive.

The most important part seems to be to get a good compacted base that
won't settle or expand with moisture to place the concrete on.

Thanks for your comments.

Bob