Sakurazaka Project, 2021

可動書架によって伸び縮みする住戸

福岡市に所在する築30年超のRC造マンションの一住戸改修。 夫婦と子2人の住宅である。可動書架を寝室の間仕切りに用いることによって、家族の変化にしたがって1LDKから3LDKへ、あるいは個室のない一室空間へと変化する住戸を考えた。 

素材とディテールについては実用性と即物性を追求し、枠のないポリカーボネート引戸、波板を転用した鴨居・敷居、アルミ箔が輝く反射天井など、多くの建築要素と家具に工夫を凝らした。 また、隣戸との境界を含め、すべての壁・床・天井に断熱材を施工し、高い断熱性能を確保した。RC造マンションの断熱改修では壁体内結露が発生するか否か、検証した事例は少ない。そこで、室内および壁体内に温湿度センサーを組み込み、結露に関する実証実験とデータ解析を行っている。

Link

新建築住宅特集 (JP)

architecturephoto (JP)

archdaily (EN)

TECTURE MAG (JP/EN)

Sakurazaka Project

Fukuoka, Japan, 2021

Iwamoto Masaaki Laboratory + ICADA

Design team: Masaaki Iwamoto, Ryo Katayama, Riko Saegusa

Thermal environment design: Kozo Takase, Asahi-Kasei Kenzai

Structural design: Kosuke Araki

Lighting design: ModuleX Fukuoka

Contractor: EX works

Photo (c) Yashiro photo office

The project is a flat renovation of a 30-year-old apartment in Fukuoka City, Japan, a home for myself, my wife and our two children. By using movable bookcases as partitions of the bedrooms, I designed a house where the space expands and contracts as the form of the family changes. In postwar Japan, Most of the flat units were designed for nuclear families of a parent and children, with the living room, dining room, parents room, kid room, kitchen, and bathroom squeezed into a small rectangle of around 80 square meters. What you see here is a one-to-one correspondence between the family form and the floor plan. However, family grows and changes from moment to moment. Children, who are small now, will establish themselves and leave the house in the not too distant future. It would be reasonable for parents to enjoy the space after children leave, but the fragmented rooms in a conventional flat are too cramped to reuse and usually ends up as storage, filled with dusty cardboard boxes of mementos. Against this backdrop, the idea was to create a house where the rooms can expand and contract as family changes. The bedrooms are divided by three movable bookcases, which can be scattered to create four small alcoves, or gathered in one place to create one large room. The space of each room can be freely allocated, and by opening the polycarbonate sliding doors facing the living room, the entire house can be made into one large space.