The benchwork has started to come up. It is a simple grid, resting on the metal brackets. Nothing fancy, but it worked fine for my old Tap Creek layout.
The picture below shows what it is looks like at this stage.
I will lay plywood on the grid and extruded foam on top of that. The foom boards alone are sturdy enough for N scale so the plywood is really not needed. However, since I might install switch machines I will need something to screw them to. That is the only reason for the plywood.
The raised pieces of wood along the walls will be used to hold the backdrop.