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Beyond Net Zero - SOM's Urban Sequoia Building Concept and Technologies for Future, Regenerative Cities

  • Published : 2023.06.01

Abstract

Cities cover only 3% of the planet's surface, yet they are responsible for more than 75% of the global emissions. Given the projected urban built area will double by 2060, the carbon emitted from cities will further increase. SOM proposes the Urban Sequoia concept, for buildings that go beyond 'net zero' and absorb carbon from the atmosphere. This concept combines multiple strategies, including the use of an optimised building form with a highly efficient structural system, modularized prefabrication techniques, holistic integration of facade, MEP and interiors' components, bio-based materials, and Direct Air Capture (DAC) technology, to reduce a 40-storey building's whole life cycle carbon emissions by more than 300% over a 100-year lifespan. Calculations of embodied carbon emissions are performed with SOM's in-house Environmental Analysis (EA) Tool to demonstrate the effectiveness of employing Urban Sequoia's design strategies in the design of new buildings using current technologies.

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References

  1. Athena Sustainable Materials Institute. (2021). A Cradle-to-Gate Life Cycle Assessment of Ready-Mixed Concrete Manufactured by NRMCA Members - Version 3.2. https://www.nrmca.org/wp-content/uploads/NRMCA_LCAReportV3-2.pdf
  2. Arrigoni, A., Pelosato, R., Melia, P., Ruggieri, G., Sabbadini, S., and Dotelli, G. (2017). Life cycle assessment of natural building materials: The role of carbonation, mixture components and transport in the environmental impacts of Hempcrete blocks. Journal of Cleaner Production, 149, 1051-1061. https://doi.org/10.1016/j.jclepro.2017.02.161
  3. Carbon Leadership Forum. (2021). 2021 Material Baselines. (Baseline Report v2). https://carbonleadershipforum.org/2021-material-baselines
  4. Elfordy, S., Lucas, F., Tancret, F., Scudeller, Y., and Goudet, L. (2008). Mechanical and thermal properties of lime and hemp concrete ("hempcrete") manufactured by a projection process. Construction and Building Materials, 22(10), 2116-2123. https://doi.org/10.1016/j.conbuildmat.2007.07.016
  5. European Standards (2012). Sustainability of construction works. Assessment of environmental performance of buildings. Calculation Method. BS EN 15978:2011.
  6. Finke, C., Leandri, H. (2020). Process to make calcium oxide or ordinary portland cement from calcium bearing rocks and minerals. (U.S. Patent No.US20210070656A1). U.S. Patent and Trademark Office.
  7. Global Alliance for Buildings and Construction. (2021). 2021 Global Status Report for Buildings and Construction. Towards zero-emissions, efficient and resilient buildings and construction. https://globalabc.org/sites/default/files/2021-10/GABC_Buildings-GSR-2021_BOOK.pdf
  8. Hinkle, H., McGinley M., Hargett, T., Dascher, Skye. (2019). Carbon Farming with Timber Bamboo: A Superior Sequestration Systeem Compared to Wood. https://bamcore.com/wp-content/uploads/2019/01/Carbon-Farming-with-Timber-Bamboo.pdf
  9. Kologlu, Y., Srubar, W V. How Living Materials Could Shape the Future of Architecture. https://www.som.com/story/how-living-materials-could-shape-the-future-of-architecture/
  10. Hasman, M. (2023). RIBA Climate Guide 1st Edition. Routledge. https://www.routledge.com/RIBA-Climate-Guide/Hasman/p/book/9781914124471
  11. HTA Design LLP. (2023). Ten Degrees, 100a George Street. https://www.hta.co.uk/project/101-george-street
  12. Inventory of Carbon & Energy. (2019). Industry average: Steel, Wire rod [Version 3.0 Beta
  13. One Click LCA Database. (2022). https://www.oneclicklca.com/support/faq-and-guidance/documentation/database/
  14. Terlouw, T., Treyer, K., Bauer, C., and Mazzotti, M. (2021). Life cycle assessment of direct air carbon capture and storage with low-carbon energy sources. Environmental Science &; Technology, 55(16), 11397-11411. https://doi.org/10.1021/acs.est.1c03263
  15. Sarkisian, M., Long, E., Beghini, A. and Micallef, K. (2022). Structural Design of the Urban Sequoia Tower. STRUCTURE magazine, June.