Floor Area Ratio Game

Korean studio On Architecture designed a stepped mixed use building in Ulsan. The client wanted to demolish the existing house and build a commercial building so that he could use it as the headquarters for his business. He requested to realise a project with a maximum building-to-land ratio and floor area ratio as other owners did. The building was supposed to be three-story building with a general floor area ratio, but it became a five-story building with a new composed floor area ratio.

  There is a maximum floor area ratio for the first floor, and the second and third floors meet the required floor area ratio of the building by keeping some of the front parts empty. The floor area ratio, which was obtained on the second and third floor, was used for the fourth and fifth floors. This rearranged floor area ratio created the building.

These open exterior stairs visually interrupted the protruding mass design of the building. Therefore, the punched metal, which provided not only openness but also closure, was used. In fact, the material at first was matte chain, which emphasized verticality and had a subtle sense of reflections of the sun. However, the building owner wanted to change the material to punched metal. In order to emphasize the verticality, the lines were bent in a vertical direction.

Project Floor Area Ratio Game, Ulsan
Program: mixed use
Architecture: On Architecture
Completion: 2017