UPDATED CLT STANDARD
ANSI/APA PRG 320-2025 Standard for Performance-Rated Cross-Laminated Timber
This American National Standard, developed under due process requirements of the American National Standards Institute, provides requirements and test methods for qualification and quality assurance for performance-rated cross-laminated timber (CLT). Information on marking, dimensional tolerances, performance criteria and product evaluation practices are included.
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NEW PUBLICATION
APA Laboratory Testing Capabilities
APA’s Tacoma, Washington, research center has long been recognized as one of the leading engineered wood and mass timber research and testing facilities in North America. The 42,000-square-foot facility is staffed by an expert team of wood scientists, engineers and Ph.Ds. and equipped with start-of-the-art testing equipment that supports innovative initiatives and full-scale structural assembly testing.
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UPDATED DESIGN TOOL
FTAO Calculator Updated for 2025
APA’s complimentary design tool, the Force Transfer Around Openings (FTAO) Calculator, is ideal for helping engineers and code officials with the design implementation of FTAO shear walls in wood-framed buildings. The Excel-based calculator helps designers calculate the maximum hold-down force for uplift resistance, horizontal strap force requirements, and maximum wall system deflection. The calculator has been updated for 2025. Find the updated calculator as well as other instructional FTAO resources on APA’s website.
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TRADE SHOW
Meet APA Staff at Oregon Conference
APA will be attending the ninth annual International Mass Timber Conference March 25-27 at the Oregon Convention Center in Portland. The event celebrates mass timber as industry experts gather to share insights and innovations. Visit APA at booth #569 to chat with our team of technical experts and learn more about the services we provide.
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