Mono-Material Wood Wall

Digital Fabrication of Performative Wood Envelopes

Authors

  • Oliver Bucklin University of Stuttgart, Institute for Computational Design and Construction, Stuttgart, Germany http://orcid.org/0000-0002-7942-6885
  • Achim Menges University of Stuttgart, Institute for Computational Design and Construction, Stuttgart, Germany
  • Oliver Krieg University of Stuttgart, Institute for Computational Design and Construction, Stuttgart, Germany
  • Hans Drexler Jade University of Applied Sciences, Department of Architecture, Oldenburg Germany
  • Angela Rohr Jade University of Applied Sciences, Department of Architecture, Oldenburg Germany
  • felix Amtsberg University of Stuttgart, Institute for Computational Design and Construction, Stuttgart, Germany

DOI:

https://doi.org/10.7480/jfde.2021.1.5398

Keywords:

Computational Design, timber, digital fabrication, layer-reduced construction, wood, façade, envelope

Abstract

The project seeks to create a building envelope that functions as structure, enclosure, and insulation,
which is assembled from one solid timber construction element type. Wood has clear environmental
benefits when compared to other standard construction materials such as steel and concrete, a good
strength-to-weight ratio, relatively high thermal insulation, and low production costs. This research
seeks to leverage these characteristics to simultaneously reduce the number of material layers in
timber building envelopes while improving the building physics performance. Thus, the environmental
impact of buildings can be reduced during planning, construction, operation, and disposal. The project
proposes a system that reduces material layers and improves envelope performance by combining
contemporary fabrication technologies with traditional woodworking techniques. Design tools should
allow for compelling formal opportunities and facilitate fabrication and construction. The system
manifests as a free-form, curvilinear log-cabin. Solid timber beams are used to minimise binders and
fillers found in composite wood products, and the entire primary construction is achieved with pure
wood joinery. CNC machining allows for the precise joining of members to achieve robust, easy-toassemble, structural and airtight façades. By sawing deep slits into solid timber beams, the resulting air
chambers improve thermal insulation values up to 30% compared to comparable solid wood assemblies
while also relieving naturally occurring internal stresses. Computational design algorithms generate
toolpaths and construction data directly from simple input curves, enabling direct coordination of
architects, engineers, and contractors. To evaluate the system, multiple prototypes are fabricated to
test constructability, thermal conductance, and airtightness, including a demonstrator building to test
full-scale implementation. Laboratory tests and the successful completion of the IBA: Timber Prototype
House demonstrate the potential for this renewable material to fulfil the requirements of contemporary
building envelopes and open the door for the development of all-wood multi-storey façades.

Author Biographies

Oliver Bucklin, University of Stuttgart, Institute for Computational Design and Construction, Stuttgart, Germany

Research Associate, University of Stuttgart: Institute for Computational Design and Construction(ICD)

Achim Menges, University of Stuttgart, Institute for Computational Design and Construction, Stuttgart, Germany

Professor, Institute Director: University of Stuttgart: Institute for Computational Design and Construction(ICD)

Oliver Krieg, University of Stuttgart, Institute for Computational Design and Construction, Stuttgart, Germany

Research Associate, University of Stuttgart: Institute for Computational Design and Construction(ICD)

Hans Drexler, Jade University of Applied Sciences, Department of Architecture, Oldenburg Germany

Assistant Professor: Jade University of Applied Sciences: Department of Architecture

Angela Rohr, Jade University of Applied Sciences, Department of Architecture, Oldenburg Germany

Research Associate: Jade University of Applied Sciences: Department of Architecture

felix Amtsberg, University of Stuttgart, Institute for Computational Design and Construction, Stuttgart, Germany

Postdoctoral Research Associate

References

Alev, Ü., Uus., A, Teder, M., Miljan, M-J., & Kalamees, T. (2014). Air leakage and hygrothermal performance of an internally insulated log house. In J. Arfvidsson, L-E. Harderup, A. Kumlin, and B. Rosencrantz (Eds.). NSB 2014-10th Nordic Symposium on Building Physics - Full Papers. Lund: Building Physics, LTH, Lund University, pp. 55–62.

Alev, Ü., Uus, A., & Kalamees, T. (2017). Airtightness improvement solutions for log wall joints. Energy Procedia 132, pp. 861–866. doi: 10.1016/j.egypro.2017.09.678.

ISO 6946: 2017. Building components and building elements – Thermal resistance and thermal transmittance – Calculation methods (ISO 6946:2017).

ISO 10456, 2007 + Cor. 1:2009. Building materials and products – Hygrothermal properties – Tabulated design values and procedures for determining declared and design thermal values (ISO 10456:2007 + Cor. 1:2009).

Erlandsson, M., Sundqvist, J-O. (2014). Environmental consequences of different recycling alternatives for wood waste. Retrieved from https://www.ivl.se/download/18.343dc99d14e8bb0f58b76a7/1445517707516/B2182.pdf, checked on 11/18/2019.

González-García, S., Krowas, I., Becker, G., Feijoo, G., & Moreira, M. T. (2013). Cradle-to-gate life cycle inventory and environmental performance of Douglas-fir roundwood production in Germany. Journal of Cleaner Production 54, pp. 244–252. doi: 10.1016/j. jclepro.2013.05.012.

Hill, C. A. S., & Dibdiakova, J. (2016): The environmental impact of wood compared to other building materials. In International Wood Products Journal 7 (4), pp. 215–219. doi: 10.1080/20426445.2016.1190166.

Kalamees, T., Alev, Ü., & Pärnalaas, M. (2017): Air leakage levels in timber frame building envelope joints. Building and Environment, 116, pp. 121–129. doi: 10.1016/j.buildenv.2017.02.011.

Korpi, M., Vinha, J., & Kurnitski, J. (Eds.) (2004). Airtightness of Timber-Framed Houses with Different Structural Solutions. Buildings Conference, December. Oak Ridge National Laboratory: Building Technologies Program. Retrieved from https://web. ornl.gov/sci/buildings/conf-archive/2004%20B9%20papers/070_Korpi.pdf.

Nagler, F., Jarmer, T., Niemann, A., & Cruel, A. (2018). Einfach Bauen. Ganzheitliche Strategien für energieeffizientes, einfaches Bauen

– Untersuchung der Wechselwirkung von Raum, Technik, Material und Konstruktion. Endbericht für das Forschungsvorhaben [Simply Building. Holistic strategies for energy-efficient, simple building - investigating the interaction of space, technology, materials and construction. Final report for the research project]. With the assistance of Thomas Auer, Laura Franke, Hermann Kaufmann, Stefan Winter, Stephan Ott, Marco Krechel, Christoph Gehlen, , Charlotte Thiel. Technische Universität München: Lehrstuhl für Entwerfen und Konstruieren. Munich, Germany. Retrieved from https://www.einfach-bauen.net/wp-content/ uploads/2019/04/einfach-bauen-schlussbericht.pdf.

Puettmann, M. & Wilson, J. (2005). Life-cycle analysis of wood products: Cradle-to-gate LCI of residential wood building materials. Wood and Fiber Science Journal, 37, pp. 18–29.

Roos, C., Eklund, K., & Baylon, D. (1993). The Thermal Performance and Air Leakage Characteristics of Six Log Homes in Idaho.. US

Bonneville Power Administration. United States. doi: 10.2172/10103110 de Rosa, M, Pizzol, M., Schmidt, J. (2018). How methodological choices affect LCA climate impact results: the case of structural timber. International Journal of Life Cycle Assessment, 23 (1), pp. 147–158. doi: 10.1007/s11367-017-1312-0.

Ross RJ (ed) (2010) Wood Handbook: Wood as an Engineering Material. General Technical Report FPL-GTR-190. U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory,

Madison, W.I, & Schwinn, T. (2016). Manufacturing Perspectives. Tobias Schwinn in conversation with Holzbau Amann and Müllerblaustein. In A. Menges, T. Schwinn, and O. D. Krieg (Eds.). Advancing wood architecture. A computational approach. London: Routledge.

Skullestad, J.L., Bohne, R.A., & Lohne, J. (2016). High-rise Timber Buildings as a Climate Change Mitigation Measure – A Comparative LCA of Structural System Alternatives. Energy Procedia 96, pp. 112–123. doi: 10.1016/j.egypro.2016.09.112.

Ximenes, F.A. & Grant, T. (2013). Quantifying the greenhouse benefits of the use of wood products in two popular house designs in Sydney, Australia. International Journal of Life Cycle Assessment, 18 (4), pp. 891–908. doi: 10.1007/s11367-012-0533-5.

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Published

2021-04-06

How to Cite

Bucklin, O., Menges, A., Krieg, O., Drexler, H., Rohr, A., & Amtsberg, felix. (2021). Mono-Material Wood Wall: Digital Fabrication of Performative Wood Envelopes. Journal of Facade Design and Engineering, 9(1), 1–16. https://doi.org/10.7480/jfde.2021.1.5398