Berryessa House: Foundation perimeter beam, slab and retaining walls formwork – Photographs
6) Close-up view of top boards indicate the final level of the studio in relation to the entrance, as well as the stair landing

Seven views from the construction process of the foundation formwork, and specifically nailing the top board of the ground floor slab on metal stakes, and hamemering the stakes into the ground until the proper level was reached. A design decision ...