東京都武蔵野市に設計した、地上3階建てのテナントビルの計画。敷地は南北の2つの道路に接道する旗竿形状のような特徴的な敷地となる。本計画では、隣接する建物との隙間を積極的に計画することで、2つの道路を繋ぐ動線と隙間のシークエンスを主に検討している。
建物の計画としては、条例で決められた斜線をかわしながら外部階段を配置し、各階にシンプルなテナント区画を積み上げた構成となる。斜線をかわすことによってできた小道は、建物の隙間を通り抜けできるような小道として2つの道路を繋いでいる。敷地は商業地域のため隣接する建物も本敷地ギリギリまで建ち並んでいることから、隙間の小道は圧迫感があり、薄暗くなってしまう時間帯が多いことが懸念された。そこでハーフミラーの塀を立てる計画とした。その塀は、隙間に差し込む1日の日差しの明暗の移り変わりを細かく拾いながら、こちら側の敷地を映したり、向こう側の隣接する建物の裏側を透過させたり、2つの景色を重ねたりする。
単純な構成と仕掛けだが、隣地の建物の裏側を単純に隠すのではなく、1日の明暗を拾いながら、周辺環境との接続の仕方が変化していくような関係を生んでくれるのではないかと思う。（川嶋洋平）
Tenant building contributes a sense of openness to the city as the fence picks up the transition of nature
This is a plan for a three-story tenant building in Musashino City, Tokyo.
The site has a distinctive shape, like a flagpole, which connects both the North and the South side of the building. In this plan, we considered greatly the two roles of this shape. Firstly as a pathway to make the flow of people circulation and secondly as a carefully designed appearance directing people to fresh experience to walk through.
To fit the slant line regulation in the law of Japan, we adopted a plan to set back the building from the adjacent site by setting the external stairs on the sideway and creating a path below. As a result, the tenants in the building have a simple and equivalent composition on each floor. And this pathway connects the two roads north and south as a path through which people can walk freely through the gaps in the buildings. The site is in a commercial area and the buildings are built up to the edge of the lot. So it was expected that this pathway would always be dark and oppressive. As a solution, we planned to build a half mirror along the pathway.
The half-mirror fence meticulously picks up the changes in the light and shade of the sunlight that comes through the gaps throughout the day, reflecting the side dimensions of the building and the back side of the adjacent building on the other side. And we would occasionally notice the superimposing of the two views.
Rather than a simple solution of hiding the back of the building by making a flat wall, we created a distinctive pathway where people can feel the flow of the day and the changes in the sunlight by adopting a half-mirror wall plan. Moreover, we expect that the transformation of this rather dark oppressing pathway into an experience of walking in varied level of sunlight will surely change the quality of connection between surrounding buildings. (Yohei Kawashima)
【O_ building】
所在地：東京都武蔵野市吉祥寺南町
用途：その他商業施設
竣工：2022年
設計：川嶋洋平建築設計事務所
担当：川嶋洋平、鈴木 直
構造設計：テクトニカ
設備設計：シグマ環境設計
施工：日南鉄鋼
撮影：藤井浩司（TOREAL）
工事種別：新築
構造：鉄骨造
規模：地上3階
敷地面積：159.59m²
建築面積：87.27m²
延床面積：217.83m²
設計期間：2020.01-2021.07
施工期間：2021.08-2022.08
【O_ building】
Location: Kichijojiminami-cho, Musashino-shi, Tokyo, Japan
Principal use: Commercial facilities
Completion: 2022
Architects: Yohei Kawashima Architectural Design Office
Design team: Yohei Kawashima, Nao Suzuki
Structure engineer: TECTONICA
Facility: Sigma-Environment Planning
Constructor: Nichinan Tekkou
Photographs: Koji Fujii / TOREAL
Construction type: New Building
Main structure: Steel
Building scale: 3 stories
Site area: 159.59m²
Building area: 87.27m²
Total floor area: 217.83m²
Design term: 2020.01-2021.07
Construction term: 2021.08-2022.08
