TerraTimber
by Karlsruhe Institute of Technology
Karlsruhe, Germany
Project details
Year
2025
project year
2024
Building area
12,5 m²
project website
Location
Team credits
KIT team
-Professur Digital Design and Fabrication (DDF)-
Moritz Dörstelmann,
Daniel Fischer,
Vincent Witt,
Erik Zanetti.
-Professur Design of Structures (dos)-
Riccardo La Magna,
Tamara Haußer.
-Faculty of Architecture-
Jeremy Brachat,
Tobias Dillmann,
Alexander Geiser,
Maximilian Gilbert,
Tim Hahnemann,
Annika Heesen,
Niklas Carl Maximilian Hetzel,
Moritz Karkossa,
Yelda Kayihan,
Emil Kasimir Leyens,
Ian Lülfing,
Oskar Philipp Müller,
Domagoj Radic,
Julia Rauch,
Paula Schmidt,
Fynn Schmidt-Rohr,
Jonas Schückle,
Rebecca Steinbach,
Elissa Sukar,
Sebastian Vix,
Niklas Walter,
Monika Weiß,
Niklas Wittig.
contributing partners
Bässler Holz- und Fensterbau GmbH,
Kuhmann & Dill Holzahandel GmbH,
KME Karlsruhe Marketing und Event GmbH,
Raimund Beck KG.
Conceived as both a research project and a teaching platform, TerraTimber challenges the linear model of extract, build and discard by proposing a circular, regenerative alternative. Designed to adapt to diverse contexts, the prototype relies on minimal technology and uses locally sourced materials. Its methods can be transferred to low-resource settings, offering affordable, energy-efficient building systems that support local economies and skill development.
The design team follows a bottom-up approach, allowing the architecture to emerge from the available materials. Each reclaimed timber element is scanned so its size, curvature and imperfections inform the design. This material-driven process produces architecture that is contextually grounded and inherently unique. Automation is used not to erase irregularities but to work with them, preserving the individuality of each timber piece while enabling precision and scalability. The result is a construction language that celebrates both imperfection and exactness.
The hybrid system combines digital logic with manual craftsmanship, creating a layered sensory experience where texture, light and acoustics deepen spatial perception. It embodies an honest architecture – one that reveals how it is made. Material logic and structural form become intertwined, yielding a spatial and aesthetic quality that is both technically refined and ecologically sensitive.
TerraTimber functions as an adaptable prototype. Its modular structure can be scaled or reconfigured for different programs and user needs – from pavilions and classrooms to small housing units. It demonstrates how local materials and simple digital tools can enable flexible, low-carbon construction responsive to place and context.
At its core lies an innovative hybrid of wood and earth. Waste timber is 3D scanned to optimize its use in structural assemblies. Combined with earth, it forms a composite that relies on friction and geometric interlocking for strength and stability. Earth serves as both structural filler and thermal buffer, regulating temperature and humidity while remaining repairable and reusable. All connections use wooden nails, allowing the building to be disassembled and recycled without waste. This glue-free, demountable construction ensures full material recovery at the end of its life.
TerraTimber places ecological responsibility at the centre of its design. It demonstrates circularity through material efficiency, low carbon emissions and adaptability. By reusing leftover and rejected wood, the team extends carbon sequestration and reduces reliance on virgin resources, helping preserve increasingly scarce softwood forests.
The project’s social dimension is equally important. Students were involved in every stage – from research and prototyping to hands-on construction – turning the project into an educational tool for future architects. Participants learned how digital tools can amplify, rather than replace, craftsmanship. TerraTimber also challenges perceptions of waste materials, showing how irregularity can become a source of architectural beauty and identity. By combining design, research and education, it demonstrates how academia can contribute directly to the transition to a circular economy.
TerraTimber is both a prototype and a methodology – a system that can be scaled up, adapted to different climates and applied to other materials. Its algorithmic workflows and parametric tools allow flexible design solutions, making the research highly transferable. Beyond the laboratory, the project connects with local industries, recycling companies and timber construction professionals. These collaborations ground the research in practice, fostering dialogue between academia and industry and contributing to systemic change. TerraTimber exemplifies how architecture can respond to the climate crisis with intelligence and creativity. It turns scarcity into opportunity, waste into structure and experimentation into a shared process of making and learning.
Developed within KIT’s Department of Architecture, TerraTimber results from collaboration between the Professorship for Digital Design and Fabrication (DDF) and the Professorship for Design of Structures (dos). The project was realized through research-informed courses such as Reprogramming Wood Waste and Digital Upcycling: Wood, engaging master’s students in the complete process of design, prototyping and construction.
The DDF group explores computational design and digital fabrication to enable circular construction concepts. Working at a 1:1 scale, the team develops and tests innovative material systems through application-oriented prototypes – from design and production to disassembly and reuse. The dos group focuses on resource-efficient construction strategies using computational tools, advancing structural design through hands-on experimentation and bridging engineering and architecture.
The prize money will fund the co-creation of a semi-permanent construction demonstrator at the Kwame Nkrumah University of Science and Technology (KNUST) in Kumasi, Ghana. Co-designed and built by students and researchers from KNUST and KIT, the structure will combine bamboo, earth and low-tech digital fabrication tools. Developed during the 2025 RENABUMA Building Workshop, it will serve as a prototype for low-carbon, climate-responsive architecture and a platform for long-term research, education and local entrepreneurship. Through this collaboration, TerraTimber expands its impact beyond academia, offering a replicable model for sustainable construction in diverse social and climatic contexts.
- Information for the project text was provided by Karlsruhe Institute of Technology -
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Advisory Committee Statement
‘TerraTimber’ receives the award for Local Scale for its innovative use of natural materials and its thoughtful integration of technology with vernacular traditions. The project carefully scans and standardizes wood, making use of local resources while generating knowledge that can be shared and applied globally. In a context where natural materials are typically industrially processed, it offers a creative and precise method for repurposing wood waste. Through its combination of digital fabrication and craftsmanship, the project redefines material efficiency, demonstrating how advanced technology can strengthen rather than replace local practices, and how circular design can become both ecologically and architecturally expressive.