This is an extension to an existing circuit board factory located near Atsugi base. The first floor area, which had originally been planned as a workshop, was changed to be used as a showroom and a multi-purpose space for local community, and therefore versatility and openness were required. Furthermore, since future reconstruction of the currently used factory building was under consideration, we tried to design an extension allowing for multiple uses, while providing adjustable spaces and programs in accordance with the active involvement of users. This building is constructed of a frame structure model designed to accommodate various conditions and requirements, as well as fitting and hardware elements allowing fine tuning by improving their adjustability and renewability. Those spaces in the building are characterized by the composition juxtaposing those elements without losing their original characteristics.
▼建筑全貌，external view of the building
The site is categorized as semi-industrial zone, where factories and residential houses coexist. A factory is a closed program in a city environment, mostly constructed of steel frame structure covered by exterior walls made of industrial materials; a house also has tendency to be closed in order to maintaining its privacy. As a result, those two programs have little chance to get mingled with each other—in a positive sense. The house adjacent to the site has a daily life in which family members sundry the laundry or walk a dog. Then, together with the client, we thought about how a factory should be standing next to such everyday scenery of the neighborhood. As a result, we came up with an image of an “open wooden-structure factory” that mediates the relationship between a factory and a house. We expect that this place will be accepted by the local community as a place where people gather, while changing day by day with the active involvement of various people.
▼建筑外观面，采用开放的木制结构，external view of the building, using open wooden structure
Once we came up with the image of the “open wooden-structure factory”, the next challenge was to practically realize the building in terms of structural and constructional integrity, without sacrificing the living environment and its comfort level. Then, we set up a program for various elements to be determined by adaptively modifying them according to the conditions—that was named as the “adaptive model”. We made final decisions for the output variations in terms of constructional and aesthetic aspects; there are numbers of possible forms in parallel existence, with freedom of going back and force within the process by altering parameters. The living layer is configured with movable elements to ensure possibilities of various conditions of the space. On the other hand, the environmental layer was given certain restrictions derived from structural evidences considering various possibilities, because it is the area not easily accessible by the users and then supposedly valid final decision was made based on an aesthetic point of view. While we did not conduct a physical model study, we applied a method of parameter modeling allowing a free handling of information; this enabled us to simultaneously study the conditions of the space in terms of aesthetic and structural point of views in higher precision. In this project, it was important to allow free establishing of input format by using general-purpose 3D CAD and programing, rather than utilizing an application such as BIM software with predefined input format for our design process. It is possible even for a small design office to increase the depth and density of architectural design by utilizing certain technology, with objective comparisons and studies of a vast number of variations. During this process, architectural and aesthetic criteria would achieve more significant meanings, and this is where the authorship of small design offices remains, which is the last stronghold that cannot be explained objectively nor verbally.
▼建筑结构，structure and detail
遮阳板设计 About screen design
In order to control visibility from the road side and screen the daylight from the east side face of the building, exterior fittings are designed with the numerical aperture of 30% on the east side face against the morning sun, with 3 patterns of vertical grills by combining 3 different components, in 42mm wide/ 60゜ angle, 80mm wide/ 70゜, and 120mm wide/ 70゜. The orientation of each vertical grill is different on the east face and north face, responding to both issues of visibility control against the site conditions and daylight control against the environment conditions. The aluminum sash of transoms above the canopy is partially operable.
▼建筑立面采用垂直百叶进行遮阳和视线控制，sunlight and visibility control by using vertical grills on the facade
▼可以移动的百叶满足不同的私密度和遮阳需求，movable grills meeting different levels of privacy and sunshade
▼百叶关闭后遮蔽外界视线，grills control the visibility from the roads when closed
▼百叶改变室内外空间之间的关系，grills change the relationship between the interior and exterior
内部环境设计 About environmental design
This building is an open-plan space where the entire space above the space trusses is connected together, while the dimension of the space can be largely altered by its fittings. Since the air volume is large because of the high ceiling condition, typical air-conditioning planning with ceiling blowout method would require higher specification for air-conditioning equipment. Thus, we divided air-conditioning zones into the living layer and the environmental layer, and only the living layer was designed to be air-conditioned by installing air inlets and outlets on the floor surface to circulate conditioned air within a single grid. Due to this air-conditioning plan, a high comfort level was achieved using a highly cost effective method without increasing the initial running cost.
▼一层为生活集会区，采用自由平面，可移动隔板根据需求分割出不同尺度的空间，the first floor is designed in open-plan for public activities, using movable partitions to define various dimensional spaces
▼隐藏的收纳功能，the hidden storage
▼二层为工作空间，同样为自由平面，the second floor is for workplace, also designed in open-plan
▼二层采用木制可移动隔断，围合后私密感更为强烈，wooden partitions are used on the second floor, creating more isolated spaces
▼木制空间桁架，管道覆有保温层，减少能量损耗，wooden space truss, the insulated ducts reduce loss of energy
▼滑轨细部，detail of the sliding rails
▼建筑于夜色中透出灯光，architecture in the dark with gentle light
▼一层平面图，the first floor plan
▼二层平面图，the second floor plan
title: Substrate Factory Ayase
location: Kanagawa, Japan
program: Multi-purpose space, Office
site area: 278.25 m2
building area: 182.4 m2
total floor area: 290.88 m2
Client: Y.K.ELECTRONICS CORPORATION
Architect: Aki Hamada Architects (Aki Hamada, Ryo Saito)
Structure: Konishi Structural Engineers (Yasutaka Konishi, Noboru Enshu)
Lighting: SIRIUS LIGHTING OFFICE (Hirohito Totsune, Ami Tohya)
Landscape: SfG Landscape Architects (Akihiko Ono)
Photo: Kenta Hasegawa