The Gottshalden single-family house in Horgen is situated on a terrace elevated above Lake Zurich. It consists of a basement, a ground floor and one to two upper floors. The basement is in concrete, the upper floors are a hybrid construction. The vertical loads are transferred via a wooden structure. The ceilings are wood-concrete composite slabs. The ceilings are not provided with wooden beams, but with wooden boards with a thickness of only 6 cm (oak). Where the spans for the ceiling are too large, steel girders are used in the ceiling in the sense of a hidden joist. These steel girders are partly designed as multi-storey trusses.