Under slab plumbing and drainage

All kinds of internal and external plumbing and drainage pipes are added then buried.  I took hundreds of photos of these in case we need to reconstruct where the pipes are.  Its not very exciting unless it is your plumbing!

Next we have styrofoam and wire mesh that goes under the concrete.  The styrofoam is used to insulate the concrete heated area.

Lastly a picture of the moon just above the trees taken from the bottom of the elevator shaft.  I figured this would be the last time I would see this happen.