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Curved Patterns and Kerf Bending in Cross-Laminated Timber Pavilion

Author:
Kazuki Hayashi
Curved Patterns and Kerf Bending in Cross-Laminated Timber Pavilion
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Characterized by its use of kerf bending and curved patterns in cross-laminated timber, the pavilion serves as an interactive exhibition space that explores the inherent flexibility and strength of wood.
5 key facts about this project
01
Utilizes 3-ply cross-laminated timber panels for structural integrity.
02
Incorporates kerf bending to enhance material flexibility and design.
03
Features a singular developable surface for simplified construction.
04
Curved patterns enable dual-directional bending for dynamic aesthetics.
05
Situated on the Katsura campus, enhancing the educational environment.

The "Flexible Timber" project, located on the Katsura campus of Kyoto University, explores the capabilities of timber within a contemporary context. This design serves as an exhibition space that highlights the unique characteristics of timber, focusing on its flexibility and structural strength. The concept revolves around creating an adaptable environment that encourages interaction and engagement while showcasing the material's properties.

Material Utilization

The design utilizes a 3-ply 36mm Cross-Laminated Timber (CLT) panel as the main structural element. This selection allows the structure to be both strong and lightweight. The addition of 9mm diameter bolts plays a vital role, providing necessary displacement enforcement. This ensures stability while allowing the structure to accommodate the natural movement that timber exhibits.

Spatial Configuration

The layout of the pavilion features curved patterns that enable bending in multiple directions. This design choice enhances the functionality of the space. It invites visitors to explore the environment artistically. By moving away from traditional shapes, the design enables a more engaging experience for users.

Kerf Bending Technique

One notable aspect is the use of kerf bending technology. This method allows the timber to stay within its elastic range while being bent. The creation of slits in the wood enhances its natural bending ability. As a result, distinct forms emerge, contributing to the overall presence of the pavilion. This technique also ensures that the wooden exhibits blend naturally with the architectural structure.

Surface Developability

The pavilion is defined by its concept of surface developability, characterized by a singular developable surface. This approach simplifies the construction process. Laminated wood plates can be bent into shape, which reduces the need for complicated fabrication methods. The outcome is a cost-effective structure that maintains its elegance through simplicity and efficiency.

Tangible wooden exhibits amplify the pavilion's architectural form, emphasizing how timber serves as both a medium for artistic exploration and a functional building material.

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The Buildner’s Unbuilt Award 2025 is an international architecture competition dedicated to recognizing and celebrating the value of unrealized architectural designs. It invites architects, designers, and students worldwide to submit visionary projects that have not yet been constructed, highlighting the power of ideas and the creativity behind the design process. By focusing on unbuilt work, the competition aims to bring forward concepts that shape the future of architecture and push the boundaries of the profession. 

Participants can compete in three categories based on project scale: Small Wonders (up to 100 m²), Medium Marvels (101–999 m²), and Large Visions (over 1,000 m²). Each category winner will receive €20,000, and additional prizes include honorable mentions, student awards, and a special Best Presentation Award. Winning projects will gain significant international exposure through Buildner’s publicity campaign and a feature article on ArchDaily, providing a unique opportunity to showcase creative ideas to a global audience. 

The Buildner’s Unbuilt Award 2025 encourages entrants to submit any type of unbuilt project, from conceptual visions to detailed designs, celebrating bold innovation without the constraints of realization. Important deadlines: registration closes on October 30, 2025; submissions are due by November 20, 2025; winners will be announced on December 17, 2025.

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