Oak Konan Shinagawa
Office for Obayashi-Shinseiwa Real Estate Corporation
The building is a mid rise, 12 story office building located near the harbor in Tokyo, Japan. The white lattice like exterior frame is an outer shell made of precast concrete serving as structural frame as well as sun shading device. Combined with the steel construction of the core this hybrid structure creates a column free office space. In addition, the exterior windows have natural ventilation window units that can be opened and closed manually. The fusion of design, structure, and equipment enhances high buildability and sustainability and has improved the added value of the building.
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Oak Konan Shinagawa by Kazuhiro Yasufuku
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Office by Kazuhiro Yasufuku
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Kazuhiro Yasufuku Oak Konan Shinagawa
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Kazuhiro Yasufuku Office
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Oak Konan Shinagawa Office Media Articles
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Unique Properties
The building is a mid-rise, 12-story office building located near the harbor in Shinagawa, Tokyo. The distinctive, white lattice-like exterior frame is an outer shell made of precast concrete serving as structural frame as well as sun-shading device. Combined with the steel construction of the core this hybrid structure creates a column-free office space. The fusion of structure and finishing enhances high buildability and sustainability.
Tags
Structural Frame, Facade Design, High Added-Value, High Buildability, Equipment units, Office Interior, Tokyo
Production Technology
Supply and exhaust air for the office is provided on the east, west, north sides from equipment units (air supply units and exhaust air units) built into the aluminum curtain wall inside the columns and beams. By taking advantage of the depth (500mm) of the exterior shell structure and installing air intake and exhaust air outlets on the same exterior wall surface, the amount of ductwork in the office ceiling was significantly reduced, which also contributes to high buildability. The deep structural frame also controls the amount of direct solar radiation and significantly reduces the heat loads.
Design Challenge
Labor shortage in the Japanese Construction Industry is a major challenge. Although research into new technologies such as construction robots is progressing, there are still few examples of their use in actual construction sites. One of the major themes of this project is high buildability. We communicated with the construction staff to find a construction method that was easy to construct and of high quality. At the same time, as architects, we had to keep creating new ideas for exterior and interior to added-value to the client.
Project Duration
The project started in September 2020 and finished in July 2022 in Tokyo, Japan.
Operation Flow
The column-free office space with a hybrid structure of a precast concrete outer frame and steel construction improves the flexibility of office layout and significantly enhances the convenience of users. In addition, the exterior windows have natural ventilation window units that can be opened and closed freely by attaching a detachable handle, allowing for direct air intake.
Research
Labor shortage have recently become major challenges in the Japanese Construction Industry. This building uses precast concrete columns and beams, which serve as both the structure and exterior finishing materials of the shell structure that characterizes the facade.The use of precast concrete elements fabricated off-site ensures high quality and accuracy. In addition, the structural frame was designed without horizontal connection, which enables to simplify the site erection. Productivity on site has significantly improved by simply dropping columns and beams from above like building blocks.
Inspiration
Labor shortage have recently become major challenges in the Japanese Construction Industry. Structural frame was designed without horizontal connection, which enables to simplify the site erection. Productivity on site has significantly improved by simply dropping columns and beams from above like building blocks. The design of the interior in many areas is based on a motif of vertical and horizontal lines and grids inspired by the facade design.
Image Credits
Image #1: Photographer Naomichi Sode (SS Co., Ltd), Oak Konan Shinagawa, 2022 Image #2: Photographer Naomichi Sode (SS Co., Ltd), Oak Konan Shinagawa, 2022 Image #3: Photographer Naomichi Sode (SS Co., Ltd), Oak Konan Shinagawa, 2022 Image #4: Photographer Naomichi Sode (SS Co., Ltd), Oak Konan Shinagawa, 2022 Image #5: Photographer Naomichi Sode (SS Co., Ltd), Oak Konan Shinagawa, 2022
Project Overview
Oak Konan Shinagawa Office has been a Silver winner in the Architecture, Building and Structure Design award category in the year 2022 organized by the prestigious A' Design Award & Competition. The Silver A' Design Award celebrates top-tier designs that embody excellence and innovation. This award acknowledges creations that are not only aesthetically pleasing but also highly functional, reflecting the designer's deep understanding and skill. Silver A' Design Award recipients are recognized for their contribution to raising industry standards and advancing the practice of design. Their work often incorporates original innovations and elicits a strong emotional response, making a notable impact on the improvement of everyday life.
Silver Recognition
Kazuhiro Yasufuku was recognized with the coveted Silver A' Design Award in 2023, a testament to excellence of their work Oak Konan Shinagawa Office.
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