Office in Sanno by Studio Velocity: A Curved Architectural Marvel

A Harmonious Blend of Form and Function

Located in the dense urban fabric of Okazaki, Japan, the Office in Sanno by Studio Velocity is a testament to architectural ingenuity. Completed in 2020, this office space redefines spatial experiences by seamlessly integrating fluid design, structural efficiency, and a unique relationship between indoor and outdoor spaces.

Innovative Curved Roof Design

One of the most striking elements of the Office in Sanno is its large curved surface, which serves as both a functional and aesthetic component. This single sweeping form creates varied ceiling heights throughout the structure, fostering a dynamic spatial experience. The curvature also extends to form a rooftop space that provides moderate privacy while maintaining a sense of openness—an essential feature in a tightly packed urban environment.

Rethinking Curved Surfaces with Flat Materials

Conventionally, constructing curved surfaces involves three primary methods:

1. Reinforced Concrete (RC) Molding – A high-cost approach requiring complex formwork.
2. Polygonal Structural Assemblies with Finishing Materials – Labor-intensive and results in increased material thickness.
3. Bending Laminated Wood or Steel Beams – A costly process requiring advanced fabrication techniques.

To overcome these challenges, Studio Velocity introduced an innovative approach: generating a curved surface using flat materials with minimal thickness. By leveraging gravity and tension, the design achieves an organic curvature without excessive structural or financial burdens.

Structural Efficiency Through Wood Tension Systems

A key feature of the Office in Sanno is its strategic use of Hinoki wood tension materials. Rather than relying on conventional steel cables, the design incorporates wooden structural elements that blend seamlessly into the space. These extra-fine columns support the roof without disrupting the interior’s openness, ensuring a balance between structural integrity and aesthetic subtlety.

Adaptive Load Management on the Curved Roof

Another remarkable aspect of this project is its adaptive load distribution. The curved roof is engineered to dynamically adjust stress levels based on occupancy. When up to 150 people (40 kg/m²) are present on the rooftop, the vertical tension materials redistribute compression forces, maintaining the structure’s shape without excessive strain on any single element. This intelligent load management system enhances both durability and safety.

Precision Wood: Engineering a New Standard in Timber Construction

Unlike steel or reinforced concrete, wood exhibits natural variations in strength. To counteract this unpredictability, Studio Velocity employed a precision wood methodology, where each laminated timber piece was individually tested for strength. Approximately 1,100 lamina underwent load testing, allowing the team to custom-design 12 precision wood members. This approach ensures that the wooden structure behaves in a predictable manner, akin to steel, while maintaining the warmth and sustainability of timber construction.

A New Paradigm in Office Design

The Office in Sanno is more than just a workspace—it is a bold architectural statement that challenges conventional construction methods. Through innovative use of materials, thoughtful structural engineering, and a commitment to sustainability, Studio Velocity has created a landmark that exemplifies the future of organic architecture in dense urban settings.