Join us for a webinar exploring real-world acoustical performance data for mass timber floor and wall assemblies—and how the results compare with conventional construction. With Mike Raley, Oregon Acoustic Research Laboratory, we’ll examine measured airborne and structure-borne sound isolation, then explore practical strategies for improving acoustical performance through assembly design and targeted detailing. Mass timber construction is often perceived as acoustically inferior to conventional construction types, particularly in multi-family buildings subject to code-mandated sound transmission requirements. These perceptions often lead to design approaches that increase assembly mass—most commonly by adding concrete toppings, which can diminish the embodied carbon benefits of mass timber systems. This course evaluates the validity of these assumptions through a review of measured baseline acoustical performance data for mass timber assemblies and comparisons with conventional construction types. The presentation introduces the principles of sound transmission and isolation to provide a framework for understanding acoustical behavior in building assemblies… September 9 @ 1:00 pm – 2:00 pm EDT