Project Start: July 2021
Project Completion: June 2023
Principal Investigators: Antony Wood & Daniel Safarik, Council on Tall Buildings and Urban Habitat
The global building industry is now at a turning point, where increasing pressure towards more sustainable construction methods is driving great interest in engineered mass timber—not only because of its perceived lower carbon footprint in production, but because of timber’s ability to sequester carbon from the atmosphere as it grows / produces. However, the adoption of mass timber is still in its relative infancy, with heights in the 15–20 floor count typically being achieved so far. Timber will need to act in symbiosis with other materials, such as steel, to achieve greater heights for these buildings in the future.
The overriding objective of this project, then, is to capture the current state‐of‐the‐art and full potential of steel‐timber hybrid structures in high‐rise buildings, globally, as a means of clarifying the full benefits of steel‐timber hybrid construction for the tall building industry. Through detailed, data‐driven case study analyses (including built, under‐construction, and proposed buildings), the primary motivators that dictate and enable the use of steel‐timber hybrid systems will be identified, and the life cycle costs and environmental impacts will be studied. Common characteristics and drivers will be published and promoted, to guide and influence the future of the building industry, underscoring the value proposition of the steel-timber hybrid. Through this in‐depth assessment of the design, cost, environmental, and market benefits of using steel‐timber composite structures, a significant Research Report publication will be produced, serving as a precedent reference for stakeholders.
Note: This project is the next step, and builds upon, other CTBUH Timber Research Projects complete and currently underway, namely:
constructsteel is the steel construction market development program of the World Steel Association. Their mission is to position the use of steel as a material of choice in a sustainable way and by communicating its benefits to construction stakeholders. constructsteel is a global marketing and research-focused program, whose role is to position and target specific markets & topics requested by members for members. At the same time, constructsteel has a regional dimension, i.e., to assist in transforming global efforts into opportunities at the regional level.
The Softwood Lumber Board (SLB) is an industry-funded initiative established to promote the benefits and uses of softwood lumber products in outdoor, residential, and non-residential construction. Programs and initiatives supported by the SLB will focus on increasing the demand for appearance and softwood lumber products in the United States.
The presentations below were captured during the two-day CTBUH 2022 Steel-Timber Hybrid Buildings Conference, which convened the leading international experts in steel and timber design and construction, and explored how the benefits of each can be utilized to advance tall steel-timber hybrid buildings. Taking place at Mies van der Rohe’s essential masterpiece, the 1956 S.R. Crown Hall at the Illinois Institute of Technology (IIT), Chicago, these presentations covered the most significant steel-timber hybrid buildings completed, under design or under construction today, as well as the latest advances in academic research.
Antony Wood, CTBUH; Reed Kroloff, Illinois Institute of Technology; Terrence Busuttil, constructsteel; Nick Milestone, Softwood Lumber Board
Michelle Roelofs & Jordan Woodson, ArupDownload Presentation (PDF)
Ilana Danzig, Aspect Structural EngineersDownload Presentation (PDF)
Susan Jones, atelierjonesDownload Presentation (PDF)
Kadir Sener, Auburn UniversityDownload Presentation (PDF)
Jennifer Pazdon, Cast ConnexDownload Presentation (PDF)
Diederik Dam, Dam & Partners ArchitectenDownload Presentation (PDF)
Ethan Martin, DCI EngineersDownload Presentation (PDF)
Mark Atkinson, Foster + Partners; John Peronto, Thornton TomasettiDownload Presentation (PDF)
Harrison Glotman & Chris Smith, Glotman Simpson Consulting EngineersDownload Presentation (PDF)
Riku Hirvonen, Karelia University of Applied SciencesDownload Presentation (PDF)
Thomas Robinson, LEVER ArchitectureDownload Presentation (PDF)
Matt Streid, Magnusson Klemencic AssociatesDownload Presentation (PDF)
Tabitha Stine & Luke Johnson, Nucor Corp.Download Presentation (PDF)
Dominic Lemieux, Peikko North AmericaDownload Presentation (PDF)
Lars Anders, Priedemann Façade ExpertsDownload Presentation (PDF)
Riccardo Pedroni, RambollDownload Presentation (PDF)
Hannes Blaas, Rothoblaas s.r.l.Download Presentation (PDF)
Maurice Hermens, Royal HaskoningDHVDownload Presentation (PDF)
Benton Johnson, Skidmore, Owings & MerrillDownload Presentation (PDF)
Eddie Jump, Thornton TomasettiDownload Presentation (PDF)
Hans-Erik Blomgren, TimberlabDownload Presentation (PDF)
Solomon Tesfamariam, University of British ColumbiaDownload Presentation (PDF)
Adam Phillips, Washington State UniversityDownload Presentation (PDF)
Andrew Waugh, Waugh Thistleton ArchitectsDownload Presentation (PDF)
Robert Schmitz, White ArkitekterDownload Presentation (PDF)
Ricky McLain, WoodWorks; Jennifer Hardy, PayetteDownload Presentation (PDF)
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