TPI Announces the Release of ANSI/TPI 1-2022
On July 17, 2023, the Truss Plate Institute (TPI), the leading provider of truss engineering information for the construction industry, released the ANSI/TPI 1-2022 National Design Standard for Metal Plate Connected Wood Truss Construction. This publication is an update to the ANSI/TPI 1-2014 and is now available for purchase online from the Truss Plate Institute at www.tpinst.org. This standard is available in hard copy or in a downloadable electronic form and comes with a Commentary & Appendices.
The 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, a methodology for analyzing reinforced web members, and more. The ANSI/TPI 1-2022 will be referenced in the 2024 International Building Codes.
The process for revising the TPI 1 standard followed TPI's ANSI-approved procedures as outlined in the Project Committee Method for Achieving Consensus (PCMAC). A balanced Project Committee was formed in 2019, consisting of Users, Producers, and General Interest members tasked with updating the 2014 edition of the standard. The ANSI/TPI 1-2022 is the product of the Project Committee's efforts.