The Voxel Lattice System Inspired by kake-zukuri, like Reinforced Concrete Construction
Square and three-dimensional grids are among the most universal forms in both ancient and modern architecture worldwide. In computation, the use of pixels and voxels as units for rendering and modeling calculations has proven to be a highly versatile notation. By adhering to the strict rules of a grid structure and adjusting the framework, adding floors and walls as needed, the aim was to create a spatial experience resembling a tree-like structure in three dimensions.
1. A 3D grid was applied to the site with elevation differences, and the concept of kake-zukuri was extended to the entire building, including the foundation and the superstructure. The attempt was made to reconstruct the kake-zukuri using modern metal hardware techniques.
2. A structure that can be expanded in both horizontal and vertical directions, creating a system where floors and walls can be freely configured within a 3D grid. In this scale and span, four columns were bundled together, but the number of bundled columns could be changed flexibly according to the design requirements.
3. By using bundled columns and bundled beams made of 120mm square standard timber, it is possible to accommodate various spans and deflections. In addition, elements such as window frames, wall panels, and equipment, which are typically added in timber framing construction, were integrated into the structural details of the material. The processing for the various connections and finishes on the structural materials was done during the precutting phase to avoid complicating on-site work. These were small tweaks made to realize an abstract framing, inspired by the detailing of reinforced concrete construction.
In the 1950s, many reinforced concrete buildings in Japan were constructed using the spatial configuration of columns and beams characteristic of traditional Japanese architecture. With the widespread adoption of precutting technology and the mechanization of complex processing, leading to the large-scale growth of wooden construction, I believe a reverse current is emerging in contemporary times, where the details of wooden construction may be replaced by those resembling reinforced concrete.

The earthen wall panels fit seamlessly into the wooden latticework module measuring 1.82m x 1.82m x 1.35m. These panels are crafted by mixing the site’s soil with grass. In front, a Japanese garden and a walking path extend, enhancing the natural ambiance.
The terrace and corridor sections are based on the basic module, with a ceiling height of 2.70m and an eaves height of 4.05m. The intermediate space, enclosed by columns and beams, can be referred to as a engawa or portico, where people can gather regardless of the weather. In this semi-outdoor lattice-covered area, one can enjoy the view of the city while gazing at Mount Fuji.
The view from the interior is framed by the Voxel Lattice System, capturing both the mountain range and the cityscape. The layered timber framework creates a sense of depth through multiple overlapping structural axes. The first floor is designed not only for employees but also to accommodate external visitors. Therefore, the plan integrates outdoor and semi-outdoor spaces as a continuous environment, enhanced by amenities such as a welcoming lobby and a counter kitchen.
An elliptical spiral staircase: The primary structure is made of steel, and its overall dimensions were determined based on the maximum size allowable for delivery and the floor layouts of each level. By adopting a hybrid system of wood and steel, a sense of levitation was achieved—making the massive wooden form appear to float.
Lighting design: Basic illumination is provided by linear lights embedded within the beams, while uplights are strategically placed to enhance the spatial atmosphere. As a result, the office building, nestled within the mountains, appears to float at night. In addition, a luminous tower adjacent to the architecture is planned to glow in the nighttime landscape.
A company building should embody the spirit of the enterprise. For a client whose core business is recycling, the longevity of the architecture was considered essential. This led to the development of a system incorporating standardized materials and replaceable components. While natural materials require ongoing maintenance, such continuous care fosters a sense of attachment over time. Just as traditional temple and shrine architecture has endured for centuries, it is our hope that this building, too, will have a long and enduring life.