Stem walls are what the walls will attach to. They rest on top of the footings. The excavated area will be filled back in to a foot or so below the top of the stem walls. On the inside the stem walls will be insulated with rigid foam, then center of the foundation will be filled with pea gravel. On top of the gravel, and inside the outline created by the stem walls, our radiant-heat slab-on-grade floor will be poured.
Mom, Grandma & Cary review the progress.