Wood is increasingly recognized by the construction sector as an essential and innovative choice of material. On an international scale, wood has been gaining popularity for prefabrication of wall, roof, and floor elements. The building envelope plays a key role for a comfortable, durable, and energy efficient building. The design of a building envelope consisting of solid wood or engineered wood products differs from that of traditional light wood-frame buildings and requires special attention because of the unique characteristics of the product.
This workshop will discuss the design and construction of building envelope assemblies based on mass timber products, with a focus on protecting the structure from moisture and environmental elements, separating the indoors from the outdoor environment, and ensuring thermally efficiency. Construction moisture management will also be covered. Knowledge and experiences learned from the recent developments of mass timber buildings in various countries will be shared.
Moderator: Jieying Wang, FPInnovations, Canada
Safety Concepts for Durability of Tall Timber Buildings
Speaker: Stephan Ott, TUM – Germany, Germany
The demands of tall and large wooden building envelopes are significantly greater than those of the long-tested concepts for small buildings. Against the background of growing interest in the use of wood in urban buildings and a growing amount of multi-storey and even high-rise structures built with wood, these structures must be reliable, durable, flexible and innovative.
A clear focus must be laid on the thermal and hygrothermal vulnerability. Implied risks of the construction or operation phase related to users, costs, and environment have to be analyzed and safety concepts addressing these risks need to be implemented in the industry. As in civil engineering in general, risk theory and probabilistic methods provide a realistic framework for problem solving. The conceivable uncertainties are included in the system contexts and their influencing variables. In addition, reliability theory provides a framework for quality management, material selection, and optimization to improve the robustness of large wooden buildings.
Tallwood design institute: mass timber durability
Speaker: Judith Sheine, University of Oregon, USA
ABSTRACT The TallWood Design Institute (TDI), a collaboration between the University of Oregon’s College of Design and Oregon State University’s Colleges of Forestry and Engineering, is focused on the advancement of engineered wood products through research, testing, outreach and education. Durability of cross-laminated timber (CLT) panels has been one of our areas of applied research. The Springfield, Oregon parking structure, in particular, has raised a number of issues on this topic: protection from rain and from long-term dynamic loading from vehicles. Faculty from all three colleges working with TDI are involved in the various aspects of this research, from initial design concepts to wind-driven rain studies and testing of topping assemblies for the CLT decking. In addition, this presentation will briefly cover TDI research projects on achieving net-zero with mass timber buildings and the impact of moisture in mass timber panels.
Upbrella and sustainable construction
Speaker: Joey Larouche, Upbrella, Canada
Title to be confirmed
Conférencier: Zizhen Gao
Stephan Ott’s degrees include Architect Dipl.-Ing. and an M.A. (Master studies in Heritage Conservation, University Bamberg, Germany, 2008). He is a Coordinator and R&D Project manager at the Technische Universität München (Germany), and is its Chair of Timber. Since 2017, he has been WP3 Leader of Energy Efficient Design in: ProGETonE – Proactive synergy of inteGrated Efficient Technologies on building Envelopes, which is an EU H2020 Innovation Action. Recently, his scientific career has included such elements as Researcher in Minimal Constructions – Integral strategies for energy-efficient, minimal construction with wood, lightweight concrete and highly insulating masonry (Einfach Bauen), funded by the German Ministry of Construction and Environment; Coordinator of ERA-NET research project: TallFacades – Tall Timber Facades Identification of Cost-effective and Resilient Envelopes for Wood Constructions (2014–2017). He has been a peer-reviewer of international scientific journals (Resources, Conservation & Recycling; Building & Environment; Automation in Construction, etc.) since 2015 and has been guest researcher, PhD workshop participant, expert panel member and researcher in Germany and other countries. Mr. Ott’s professional interests include the ecological transformation of the building stock; performance-based sustainability of timber constructions; energy- and resource-efficient retrofit of building envelopes. He has authored numerous papers in the field.
Judith Sheine is a Professor in the Department of Architecture at the University of Oregon. She is the Director of Design for the TallWood Design Institute, a collaboration between the University of Oregon’s College of Design and Oregon State University’s Colleges of Forestry and Engineering focused on the advancement of timber manufacturing and design. Ms. Sheine is also an award-winning architect whose projects have been published internationally and she has been recognized as the leading authority on the work of R.M. Schindler. Her publications on the architect include R.M. Schindler (Phaidon Press, 2001) and her most recent book, Schindler, Kings Road and Southern California Modernism (University of California Press, 2012), co-authored with Robert Sweeney.
Joey Larouche is an engineer with more than 20 years’ experience around the world. He is the president and cofounder of 3L Innogénie and Upbrella Construction, where he has worked since 2009. Previously, he was head of advanced concepts and member of the product steering community at Bombardier Recreational Products and was General Manager at Paco Spiralift, a SME exporting patented lifting systems. He has worked on product and innovation development projects in several industries, on all continents. These days, he is hard at work to create the next paradigm for high-rise construction in urban settings.