Mass Timber / CLT
Because of its strength and inherent fire resistance, mass timber offers an alternative to fossil fuel-intensive materials for many applications—including high-rises—and an opportunity to reduce the carbon footprint of the built environment. Often associated with Type IV buildings, mass timber can be used in any construction type that allows wood structure. The mass timber family of products includes cross-laminated timber (CLT), nail-laminated timber (NLT), dowel-laminated timber (DLT), glue-laminated timber (glulam or GLT), and some types of structural composite lumber (SCL). Learn how to efficiently design and construct these buildings, while creating innovative projects with significant market appeal.
Solution Papers What is mass timber?
What is mass timber, what are the common products and systems, and where can you purchase mass timber for U.S. projects? This article answers these questions, outlining the differences between mass timber materials, typical structural uses, and where to find key resources for developers, building designers, and construction professionals.
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How Can a Developer/Owner Get Started with Mass Timber? Building Trends
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Mass Timber Design Manual – Volume 2 Guides, Manuals & Inventories
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Demonstrating Fire-Resistance Ratings for Mass Timber Elements in Tall Wood Structures Solution Papers
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Fire Design of Mass Timber Members: Code Applications, Construction Types and Fire Ratings Solution Papers
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Insurance for Mass Timber Construction: Assessing Risk and Providing Answers Solution Papers
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Mass Timber Cost and Design Optimization Checklists Solution Papers
Mass Timber Initiatives & Programs
Construction Management Program
Mass timber project management and installer training offered by WoodWorks and in partnership with other entities.
Insurance for Mass Timber Buildings
Resources and support for project teams facing insurance issues and insurers seeking data on safety and performance.
Developer & Owner Resources
Resources that address the financial performance of U.S. mass timber projects across various building product sub-types.
Protective Design
Guidance for the use of mass timber in projects that have to meet blast and forced entry/ballistic protection requirements.
Tall Mass Timber
Code opportunities and requirements, FAQs, project examples and resources for teams interested in tall timber projects.
Mapping Mass Timber
WoodWorks has been tracking building trends in modern mass timber and post-and-beam structures in the U.S. since 2013.
Upcoming Mass Timber/CLT Events
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Mass Timber + In Person · Northeast · November 12 – November 14
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Type III Fire-Resistant Design & Detailing for Exterior Walls, Shafts Online · Midwest · November 12 @ 2:00 pm – 4:30 pm CST
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Early Design Decisions: Priming Mass Timber Projects for Success In Person · South · November 13 @ 3:00 pm – 6:00 pm CST
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Priming Mass Timber Projects for Success + Star Lofts Tour In Person · Midwest · November 15 @ 10:00 am – 2:30 pm CST
Resources for Mass Timber Projects
Get the practical information you can apply to projects. Learn about the latest advances and code requirements, explore innovative projects, and expand your knowledge of mass timber building design.
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Developing a functionally equivalent design for comparative WBLCA Expert Tips
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CLT on Cold-Formed Steel Stud Bearing Walls: Engineering Tips for Hybrid Construction Expert Tips
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Exterior Walls in Buildings with Mass Timber Floors – Part 2: Common Floor-to-Wall Details Expert Tips
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What is mass timber? Solution Papers
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Design for Two-Way Spanning Cross-Laminated Timber Expert Tips
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LEED Credits for Use of Wood Products Expert Tips
Tools & Guides for Mass Timber Projects
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Guides, Manuals & Inventories
Detailed guidance on specific aspects of wood design and construction, plus inventories of fire and acoustically-tested assemblies.
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CAD & Revit Details
Hundreds of searchable details for mass timber and light wood-frame buildings.
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Online Calculators
Calculate height and area options or estimate your project’s wood carbon footprint.
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