New post footings and temporary supports
Benito's crew came in today to saw cut the 4'x4' concrete post footings. I thought they were just going to work around the existing posts, but it ended up they thought removing the existing posts would make the job go more smoothly. So, they put up the temporary supports, saw cut the floor, and started digging! We were concerned the center drain pipe would interfere with the 18" deep hole, but it looks like we've cleared it. One less dollar to the plumber. :)
I still have LOTS of radiator pipe to remove.