House in Kunratice

The building is based on a basic rectangular floor plan. The mass is treated as a heavy, concrete block (2nd floor) on a lightweight, glazed base (1st floor). The system of internal atriums ensures maximum intimacy in all spaces and resolves the close contact between the house and the public area. The house has one underground level, two above ground levels, and a small study on the upper roof. The 1st floor has a residential character, is closed off towards the street, and opens up to the garden with massive glazing. The 2nd floor is a quiet zone of the building with bedrooms for all family members, its floor area extending beyond the ground floor, thus creating covered spaces and shading. The study on the roof is set back from the edges of the building, made of a lightweight structure and visually minimized.
Structurally, the building is designed as a four-story, reinforced concrete structure combined with steel columns. Several types of concrete were used on the house, depending on the specific location. The main innovation comes from the use of modified lightweight concrete, which eliminated complex details around sandwich constructions and insulated beams. The walls used, with a thickness of 700 mm, do not require any additional thermal insulation. The ceilings are also cast in place, including the cantilevers in one monolithic unit, with a thickness of 530 mm. The structural height is variable, with a clear height in all main spaces of 2.8 m. The roofs are flat, walkable with terraces, or greened with extensive vegetation.