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dc.contributor.author
Ranaudo, Francesco
dc.contributor.author
Van Mele, Tom
dc.contributor.author
Block, Philippe
dc.contributor.editor
Snijder, Bert
dc.contributor.editor
De Pauw, Bart
dc.contributor.editor
van Alphen, Sander
dc.contributor.editor
Mengeot, Pierre
dc.date.accessioned
2022-02-18T10:10:49Z
dc.date.available
2022-01-07T10:45:20Z
dc.date.available
2022-02-18T10:10:49Z
dc.date.issued
2021
dc.identifier.issn
2221-3783
dc.identifier.other
10.2749/ghent.2021.2016
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/523860
dc.description.abstract
Population growth combined with urbanisation will pose huge challenges to construction in the next decades. Most of this construction has historically happened in reinforced concrete, causing tremendous environmental issues, particularly towards global warming due to the large greenhouse-gas emissions of cement and steel. Considering that for medium high-rises of ten to twenty floors, an average of 40% of the building mass is in the floors, this structural element is thus one of the most significant embodied carbon emitters. With billions of floors expected to be built by 2060, this research developed an alternative sustainable construction solution in concrete. Rib-stiffened funicular floors use doubly-curved shells to carry dead loads and stiffeners to take the life loads efficiently in compression. The tension is absorbed externally in post-tensioned ties (or against the structural frame) rather than through embedded traditional steel reinforcement. This strategy offers a reduction of the amount of concrete of up to 70%, and up to 90% of the reinforcement steel needed, of prevents issues of corrosion, and facilitates end-of-lifecycle solutions. Additionally, the structural geometry results in low stresses, allowing for the use of weaker materials with low embodied carbon. This paper reports on the integrated computational design, engineering and construction of the efficient concrete floor of the HiLo research & innovation unit, built on the NEST platform in Dübendorf, Switzerland. It represents the first application of this disruptive innovation in a real project. The lightweight floor achieves a significant reduction of embodied carbon emissions, compared to the common flat floor slab in reinforced concrete, also due to the use of a large percentage of recycled content both in the cement as for the aggregates, thus additionally contributing to a circular economy in construction.
en_US
dc.language.iso
en
en_US
dc.publisher
International Association for Bridge and Structural Engineering
en_US
dc.subject
Slabs
en_US
dc.subject
Sustainable construction
en_US
dc.subject
Global warming potential
en_US
dc.subject
Concrete floors
en_US
dc.subject
Rib-stiffened funicular floor
en_US
dc.subject
Compression-only
en_US
dc.subject
Embodied emissions
en_US
dc.title
A low-carbon, funicular concrete floor system: design and engineering of the HiLo floors
en_US
dc.type
Conference Paper
ethz.book.title
IABSE Congress Ghent 2021
en_US
ethz.journal.title
IABSE Congress Reports
ethz.journal.volume
21
en_US
ethz.pages.start
2016
en_US
ethz.pages.end
2024
en_US
ethz.event
IABSE Congress: Structural Engineering for Future Societal Needs
en_US
ethz.event.location
Online
en_US
ethz.event.date
September 22-24, 2021
en_US
ethz.publication.place
Zurich
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02100 - Dep. Architektur / Dep. of Architecture::02602 - Inst. f. Technologie in der Architektur / Institute for Technology in Architecture::03847 - Block, Philippe / Block, Philippe
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02100 - Dep. Architektur / Dep. of Architecture::02284 - NFS Digitale Fabrikation / NCCR Digital Fabrication
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02100 - Dep. Architektur / Dep. of Architecture::02602 - Inst. f. Technologie in der Architektur / Institute for Technology in Architecture::03847 - Block, Philippe / Block, Philippe
en_US
ethz.date.deposited
2022-01-07T10:45:27Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2022-02-18T10:10:56Z
ethz.rosetta.lastUpdated
2022-02-18T10:10:56Z
ethz.rosetta.versionExported
true
ethz.COinS
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