What if the future of multifamily housing isn’t choosing between masonry or mass timber—but combining both?
In this episode of In the Mix, Adam sits down with Alex Watchman of Clark Barnes to explore an innovative approach to mid-rise multifamily construction using CMU and cross-laminated timber (CLT) together as one structural system.
What started as a conversation at a Mariners game turned into a deeper discussion around building smarter, faster, and more resilient multifamily projects. Alex shares how this proposed “wood/block” system could open new possibilities for architects, engineers, and developers navigating today’s housing and construction challenges.
The conversation explores Type IV-C construction, seismic design considerations, fire resistance, scheduling efficiencies, and why this hybrid approach could create opportunities for both the masonry and mass timber industries moving forward.
In this episode:
- The origin of the “wood/block” CMU + CLT concept
- Why Type IV-C construction matters for multifamily housing
- How CMU and mass timber can work together structurally
- The hidden challenges of podium construction
- Seismic, fire-rating, and code considerations
- Why this approach could improve project timelines and efficiency
- The bigger vision for hybrid construction systems
About the Guest:
Alex Watchman is a licensed architect in Washington and a graduate of the University of Minnesota and Harvard Graduate School of Design. As part of Clark Barnes Architects in Seattle, Alex focuses on innovative approaches to resilient, efficient, and scalable building systems. His current research explores how CMU and mass timber can work together to unlock new possibilities in mid-rise multifamily housing design.
Connect with Alex:
Website:
https://www.clarkbarnes.com/LinkedIn:
https://www.linkedin.com/in/alexander-watchman-71570686Learn more about the Northwest Masonry Institute:
https://masonryinstitute.com/in-the-mixWhat is In The Mix by Northwest Masonry Institute?
In the Mix is a podcast dedicated to the people, projects, and innovations shaping the masonry industry—block by block, brick by brick.
Hosted by Adam Hutchinson, Executive Director and professional engineer, this show brings together architects, engineers, contractors, and industry leaders to explore how masonry drives resilient, sustainable, and high-performance building design.
Each episode breaks down real-world applications of masonry construction, from structural integrity and fire resistance to long-term durability and environmental impact. You’ll hear behind-the-scenes insights, industry challenges, and practical conversations that matter to those designing, building, and specifying with masonry.
If you’re passionate about stronger buildings, smarter construction, and advancing masonry in modern design—this is your place to get in the mix.
Join us in supporting the Masonry Industry mission: https://masonryinstitute.com/in-the-mix