I have officially drilled my first hole through the floor.
Doesn’t look like much but that’s a 4.5 inch hole all the way into the basement compartment. Locating that is a big deal because plumbing.
Anyway, framing up a slim steel support box for shower stall, that will dictate kitchen cabinets, etc.
I also pulled the entire frame cover panel in the underbay, there is as much room in there as I had hoped. There was a lot of dirt too.