The exterior walkway to this five-story house on a steep and wooded lot is highlighted by the tall reinforced concrete wall on the left. Directly behind it is the interior stair, which is actually supported by the structural concrete wall.
The exterior is articulated with horizontal lines and a grid of holes, marks of the wall's construction. The first relate to the height of the formwork panels and the extent of the concrete pour for a particular day, while the latter results from the rods used to hold the forms together. For the sake of appearance, they both need to be considered by the architect and contractor.