Council on Tall Buildings and Urban Habitat
CTBUH 2017 Conference Delegates Participate in Tall Timber Workshop
Sunday, 29 October 2017

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See more from the CTBUH Tall Timber Working Group
See more workshops from the CTBUH 2017 Australia Conference

SYDNEY On the day before the start of the CTBUH 2017 International Conference core program, delegates gathered in the offices of Arup in Sydney to participate in the Tall Timber Workshop. Co-Chair of the CTBUH Tall Timber Working Group Carsten Hein, Associate Director, Arup, provided opening remarks and an overview of the day’s agenda, which included 14 presenters speaking on a number of topics relevant to the tall timber industry.
Workshop Host
Attendees of the Tall Timber Workshop listen intently to a presentation.

Tall Timber Working Group Co-Chair Rob Foster, Senior Lecturer, University of Queensland, delivered the first presentation, which focused on the role of the CTBUH Height Criteria when it comes to tall timber structures, a subject examined in a recent CTBUH Journal paper. Foster concluded by proposing an update to the existing terminology, so as to accommodate the use of timber, as well as other new materials, in tall building design.

Hein picked up where Foster left off, providing a synopsis of the CTBUH Tall Timber Working Group’s activities over the last few years, which included academic research and speculative projects in the United Kingdom and research on tall timber composite slabs in Germany. Similarly themed were presentations by Benton Johnson, Associate, SOM, and Giovanni Scollo, Sales Engineer, Rothoblass, who led talks on composite-timber floors, and on the future of tall timber, respectively.

Tall Timber Working Group Co-Chair Carsten Hein, Associate Director, Arup, speaking with delegates.

Workshop participants also had the opportunity to learn about specific tall timber projects in other countries. Rune Abrahamson, Administrative Director, Moelven Limtre AS, caught attendees up on recent timber builds in Norway, such as Treet, a wooden high-rise with strong energy performance, and the upcoming Mjøstårnet, an 80-meter wooden skyscraper.

One particular highlight of the day was a technical presentation on fire safety for timber buildings by Felix Weisner and Alastair Bartlett, two PhD students at The University of Edinburgh School of Engineering. Together, they discussed the results of a test they had conducted on the stability of timber walls, as well as their findings from various experiments on full-scale fire compartments. Their work revealed many valuable insights, including the fact that three-layer cross-laminated timber (CLT) failed considerably earlier compared to five-layered CLT, and that additive fire resistance via plasterboard was only effective when there is no delamination of the timber underneath.

Felix Weisner, a PhD student at The University of Edinburgh School of Engineering, delivering a technical presentation on fire in timber buildings.
Andy Buchanon, Principal, PTL, also shared insight on fire resistance for tall timber buildings, such as the potential severity of post-flashover spreading, and the urgent need for a clear performance target for fire safety.
Andy Buchanon, Principal, PTL, presenting on fire safety issues such as post-flashover flame spread.
Paolo Lavisci, Program Development Manager, Wood Solutions, charted the last 25 years of tall timber development, spotlighting the evolution of material combinations.

Jeff Spiritos, Principal, Spiritos Properties LLC, was excited to share his thoughts on mass timber’s unprecedented ability to reduce building costs, while increasing quality of life for occupants.

Jeremy Tompson, Construction Manager, Lendlease Corporation, spoke about the construction of Australia’s first timber commercial building, International House Sydney, and Andrew Dunn, CEO, Timber Development Association, outlined the many benefits of integrating timber into residential buildings. Nick Milestone, Managing Director, STEELTECH Industries, explained the concept of the steel-framed timber slab buildings though real-world examples such as Curtain Place and The Cube, both in in Shoreditch, London. Alex Edward, Associate, Arup Sydney Office, rounded out the workshop with a conversation on tall timber’s structural robustness.
Alex Edward, Associate, Arup Sydney Office, discusses the structural robustness of timber.
The discussion that followed covered many topics, including the different behaviors of glues in tall timber construction, and the core temperature of timber sections during and after fires.

Alex Edwards Arup
Craig Gibbons Arup
Carsten Hein Arup
Lisa Kaluzni Arup
Paul Dixon Arup
Richard Hough Arup
Ralph Belperio Aurecon
Jana Somasundaram Bates Smart
Philip Vivian Bates Smart
Christophe Bilaine Bouygues Batiment International
Daniel Wells Brookfield Properties
Marshall Gerometta CTBUH
Roger Heeringa DCI Engineers
Martin Sparrow Dialog Design
Mike Haysler EIC Activities
Sean Canady GGLO
Tirapelle Matteo Hera Engineering Pty Ltd
Georgios Anagnostou Jackson Teece
Matthew Mauger Lendlease
Stephanie Smith Lendlease
Jeremy Tompson Lendlease
Thomas Robinson LEVER Architecture
Kelly Knowles Martin/Martin
Don Davies MKA
Rune Abrahamsen Moelven Limtre AS
Nick Gillespie Mott Macdonald
Goh Hoo Multiplex
Karen Cook PLP Architecture
Andy Buchanon PTL
Chibiao Hao Qingdao University of Technology
Xinyu Shi Qingdao University of Technology
Fernando Ranmal Ranmal Fernando Associates Colombo Sri Lanka
Denis Goggin Robert Bird Group
Milos Slavik Rothoblaas
Giovanni Scollo Rothoblaas Australia
Benton Johnson Skidmore, Owings & Merrill LLP
Jeff Spiritos Spiritos Properties LLC
Nicholas Milestone Steeltech Industries
Simon Lee STM Developments
Andrew Dunn Timber Development association
Alastair Bartlett The University of Edinburgh
Felix Wiesner The University of Edinburgh
Matt Makes Turner International
Rob Foster University of Queensland
Terri Meyer Boake University of Waterloo
Robert Schmitz White Arkitekter
David Bylund WoodSolutions
Paolo Lavisci WoodSolutions