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IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century


IASS Symposium 2016

SESSION: Hangai Prize Presentations

Low carbon vaulted masonry structures

< Table of Contents for Hangai Prize Presentations
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: Hangai Prize Presentations
  • Pages: 10
  • Title: Low carbon vaulted masonry structures
  • Author(s): Catherine De Wolf, Michael Ramage, John Ochsendorf
  • Keywords: embodied carbon, vaulted structures, material efficiency, natural materials, optimization
Abstract
To reduce embodied carbon in buildings, two strategies are available. First, material efficiency is improved. Second, the materials are chosen for their low carbon content. The operational carbon of buildings has lowered recently, but for immediate emissions savings innovations in embodied carbon are needed. This research demonstrates that most material mass lies in roofs and floor slabs, rather than in walls and columns. Therefore, the first strategy to reduce impacts would be to lower their material quantities in floor and roof design. For the second strategy, alternative materials are studied. Vaulted masonry structures combine both strategies: vaults span spaces efficiently and masonry has a lower embodied impact than steel and concrete. Results demonstrate that a combination of both strategies effectively lowers the embodied carbon of buildings: typical floor and roof structures range around 440 kgCO2e/m2 whereas vaulted tile masonry can be as low as 60 kgCO2e/m2.

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