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Detailing Mass Timber Structures to Minimize Impacts of Differential Movements

February 9, 2023 @ 1:00 pm - 2:30 pm EST

  • Online

National Online Event

As the height of mass timber buildings continues to grow, so too does the level of design and detailing knowledge required to achieve optimal building construction and performance. A necessary consideration for mass timber buildings of any height is vertical movement—including column shrinkage, joint settlement, and creep—and this is especially important on tall projects. The main concerns are potential impacts on vertical mechanical systems, exterior enclosures, and interior partitions, as well as differential vertical movement of the timber framing systems relative to building elements such as concrete core walls and exterior facades. This presentation will analyze reasons for vertical movement (short and long term), provide methods of calculating anticipated movement such as creep, crushing and shrinkage, highlight detailing options to minimize and accommodate movement, and discuss strategies implemented on mass timber projects completed in North America.


Jason Bahr, PE | Regional Director | WoodWorks
Jason has more than 20 years of experience as a structural engineer and a passion for sustainable building. He has a breadth of expertise in preparing structural calculations and design documents for educational building projects, along with residential construction and remodeling experience. As a timber frame designer early in his career, he gained an immense appreciation for the beauty and resilience of wood as a structural material. Always a creative problem solver and enthusiastic collaborator, Jason has worked with multidisciplinary teams throughout his career to move forward impactful projects. Jason holds combined Bachelor of Science and Master of Science degrees in Architectural Engineering from Kansas State University.

Josephine Racine, E.I.T, DIPL ING. | Specialist Engineer | Fast + Epp
Josephine joined Fast + Epp’s Vancouver office in 2019 as a timber specialist and has been working on several large-scale mass timber projects across North America including INTRO Cleveland and the Walmart Home Office. She is particularly well versed in modern mass timber connection design and innovative mass timber structural systems. She values elegant, durable, and efficient design.  Josephine graduated in 2018 with a Master of Engineering in Wood Science and Technologies with a major in Wood Construction from the Wood Superior School in France.

Sarah Tarbet, AIA | Senior Associate | Jones Architecture
Sarah has over 10 years of experience working primarily for higher education and institutional clients, with experience designing a multitude of project types. She has made an impact at top institutions across the region with a focus on facilitating learning, communication, and community – establishing herself as a talented architect, designer, project manager, and mentor with an ability to connect earnestly with her clients. Sarah focuses on accessible and inclusive design and has a keen interest in renovating and restoring mid-century architecture

John Rossini | Project Manager | Bond Building Construction
John is a Project Manager for Bond Building Construction with experience in public and private construction. His projects often require careful phasing and logistics planning to eliminate disruption to sensitive adjacent areas, with recent experience including working on active academic campuses and in occupied buildings Jonathan believes constant communication and transparency help to build a strong partnership with project owners, design teams and subcontractors, leading to successful projects.


  • 1:00-2:30 ET presentation with Q&A (1.5 credits)  
  • 2:30-2:50 ET Manufacturer Spotlight (not for credit)  

Attendees can Earn 1.5 AIA/CES HSW LUs, 1.5 PDH credits or 0.15 ICC credits


Image: Apex Plaza / Courtesy William McDonough + Partner


February 9, 2023
1:00 pm - 2:30 pm EST
Event Category: