DESIGNWORKS Vol40

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Works12当社設計施工による1957年竣工の既存本部ビルの建替えである。｢海面に広がる波｣を想起させる海事検定協会ならではの外装デザインをインテリアにも展開し、デザインと機能の融合を図った。八重洲通りに対してフルワイドのビューを確保したシンプルな骨格の中に透明なコアを設けて南北を繋ぎ、外部からの光と風を適度に緩和しながら取り込んでいる。取り込んだ外部環境は、内部のパンチングパネル天井から柔らかく染み出す光や風へと連なる。更に、外装と一体化したロングデスクやリフレッシュカウンターを室内側に設けるなど、内外が連続する環境の中に人のアクティビティを丁寧に編み込むことで、実態以上の広がりを感じる豊かなワークプレイスを創出している。(花岡 郁哉 ＋ 福西 英知)日本海事検定協会本部ビルNippon Kaiji Kentei Kyokai HeadquartersWave-shaped single-room offices defined by occupant activities波のように広がるワンルームオフィスOwner: Nippon Kaiji Kentei Kyokai, Incorporated AssociationLocation: Chuou-ku, Tokyo Main Use: OfficeDesign and construction work: Takenaka Corporation·Architects: Ikuya Hanaoka, Eichi Fukunishi·Structural: Yutaka Ide, Kei Mutou and Takahide Yoshida·M&E: Masahiro Koike, Takayoshi Shibaharaand Yumi Matsui·Site manager: Tetsuya SugiyamaSite area: 296.85m2Building area: 231.31m2Total floor area: 2,056.20m2Construction: Reinforced concreteNumber of stories: 10 floors above groundConstruction term: September 2016 to January 2018建築主：一般社団法人日本海事検定協会所在地：東京都中央区主要用途：事務所設計施工：竹中工務店・設計：花岡郁哉・福西英知・構造：井出豊・武藤肇・吉田崇秀・設備：小池正浩・芝原崇慶・松井優美・作業所長：杉山哲也敷地面積：296.85㎡建築面積：231.31㎡延床面積：2,056.20㎡構造：RC造 (免震構造)階数：地上10階 塔屋1階工期：2016.9～2018.1This project involved the reconstruction of an existing headquarters building that was originally designed and constructed by Takenaka Corporation in 1957. Both interior and exterior design depict waves spreading across the ocean surface, an appropriate motif for the Japan Marine Surveyers and Sworn Measurers' Association. The goal was to create a spacious workplace on the narrow site through the integration of design and function. To properly depict the status of a headquarters building located on Yaesu Street in central Tokyo, a full wide view with an aperture of nine meters facing Yaesu Street was secured. The common areas are smoothly connected to the regularly shaped offices to achieve a workplace in which people can easily communicate with one another. The deeply-chiseled exterior that stands out from the surrounding area reduces the sunlight load. In addition, light shelves are provided to enable the use of natural lighting, and windows that can be opened and closed are used to ensure natural ventilation. These “passive control” energy-saving features succeed in improving both BCP performance and environmental performance. (Ikuya Hanaoka, Eichi Fukunishi)1F PLAN　S=1:5005F PLAN　S=1:500SECTION　S=1:500外装、インテリアの各要素が人の行為に呼応した基準階事務室041.エントランス Entrance2.オフィス Office 3.会議室 Meeting room4.テラス Terrace5.吹き抜け VoidN11222325212234