After more than three years in development, I’m pleased to announce the publication of ANSI/TPI 1–2022 National Design Standard for Metal Plate Connected Wood Truss Construction. Including a Commentary & Appendices, this standard is available for purchase in print and downloadable digital versions from the Truss Plate Institute at www.tpinst.org.
We all know that it’s important to review our standards on a regular basis, so that we can update and improve them over time. Businesses evolve, technology evolves, and so too should our definition of best practices. Most importantly, our fundamental standard, ANSI/TPI 1, is developed through a consensus process that allows all interested parties to participate in the creation of the final product.
The Truss Plate Institute began the process of revising the prior version, ANSI/TPI 1–2014, in December 2019 with the formation of a Project Committee representing a cross-section of the industry. In May 2022, TPI officially opened the Public Review & Comment period for the draft BSR/TPI 1–2022 (revision to ANSI/TPI 1–2014) National Design Standard for Metal Plate Connected Wood Truss Construction. The new standard is the culmination of this process.
The ANSI/TPI 1 standard establishes minimum requirements for designing and constructing metal-plate-connected wood trusses. It describes the materials used in a truss, both lumber and steel, and design procedures for truss members and joints. Methods for evaluating the metal connector plates, manufacturing quality assurance, and responsibilities in the design process involving metal-plate-connected wood trusses are also contained in the standard. The industry has used the standard in earlier versions since the early 1960s. Updates and revisions have regularly occurred to keep pace with the industry’s ever-changing needs and innovations.
New in the 2022 edition are provisions for top-chord-bearing trusses and a methodology for analyzing reinforced web members, and additional updates have been included to reflect the latest industry knowledge and expertise.
Furthermore, ANSI/TPI 1–2022 will be referenced in the 2024 International Building Codes. This will enable all jurisdictions adopting the 2024 International Building Code (IBC) and 2024 International Residential Code (IRC) access to the current guidelines for our industry.
By having a national standard, we demonstrate our commitment, as an industry, to maintaining an expected level of quality in our products. Please join me in thanking everyone who participated in this process to ensure our national standard is reflective of the best practices of our industry.