Mass Timber Structural Design: CLT Shear Wall and Diaphragm Design with SDPWS 2021

Interested in learning more about structural design with mass timber? Join this presentation about CLT Shear Wall and Diaphragm Design with SDPWS 2021 by John O'Donald II, Regional Director at WoodWorks, hosted by the SEA-MW Sustainable Design Committee (SDC).

John is a licensed Structural Engineer in Maryland. Before joining Woodworks, he enjoyed working on various projects in the capital region for clients like the Smithsonian Institute and The National Parks Service, collaborating with architects and other engineers along the way. John is a member of Engineers Without Borders, enjoys woodworking in his free time, and is passionate about the sustainable aspects of wood construction. He holds a Bachelor of Science Degree in Civil Engineering from Penn State University and a Master of Civil Engineering Degree from Johns Hopkins University with a focus in structural engineering.

Course Description

The use of cross-laminated timber (CLT) as structural floor and roof panels has seen incredible growth in the US over the past decade. However, its use as part of a seismic and wind force-resisting system—either as a diaphragm or shear wall—has only recently been codified. This has resulted in designing CLT lateral systems through alternative means. This presentation will introduce new provisions for CLT shear wall and diaphragm design, in the American Wood Council’s 2021 Special Design Provisions for Wind and Seismic (SDPWS).  The presentation will cover the detailing and design requirements for the newly defined CLT shear walls and diaphragms found in the SPDWS and the range of seismic design parameters (e.g., R values) recognized for CLT shear wall in ASCE 7-22. This course is available for 1 LU/HSW.

Learning Objectives

1.Develop and understanding of design challenges related to using CLT for wind and seismic resistance while meeting the intent if the building code.

2. Discuss the new provisions in the 2021 Edition of Special Design Provisions for Wind and Seismic applicable to all lateral system..

3. Understand the new detailing options and path to code acceptance of several CLT shear wall systems.

4. Review the engineering design requirements for using CLT floors and roof assemblies as horizontal diaphragms for wind and seismic resistance.

Best Regards,

SEA-MW Sustainable Design Committee