TPI Announces Development of New ANSI Standards
Originally Published by: Truss Plate Institute — July 25, 2025
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[press release provided by Truss Plate Institute]
Truss Plate Institute Announces Development of New ANSI Standard – TPI 2: National Standard for Structural Testing of Metal Plate Connected Wood Trusses
WALDORF, MD (July 25, 2025) - The Truss Plate Institute (TPI), the nationally recognized leader in metal plate connected (MPC) wood truss engineering standards, has officially initiated the ANSI-accredited consensus process to develop a new American National Standard titled TPI 2 – National Standard for Structural Testing of Metal Plate Connected Wood Trusses. Notice of the project was published in ANSI’s Standards Action on July 25, 2025.
The new TPI 2 standard will establish procedures for testing and evaluating Metal-Plate-Connected (MPC) wood trusses for four distinct objectives: (1) determining truss stiffness, (2) testing for design confirmation, (3) establishing design capacities, and (4) assessing deflection recovery performance. The standard will outline methods for conducting each type of test and provide guidance on interpreting and applying the results to support design validation, product evaluation, and quality assurance.
TPI is now accepting applications from interested individuals who wish to serve on the TPI 2 Project Committee. Stakeholders directly and materially affected by the content of the proposed standard are encouraged to apply. Application forms and additional information about the project are available on the TPI website at www.tpinst.org.
The development of TPI 2 will follow TPI’s Project Committee Method for Achieving Consensus (PCMAC), an ANSI-accredited process that ensures balanced participation and transparency. The resulting standard is anticipated to eventually be referenced by the International Building Code (IBC) and serve as a resource for structural testing MPC wood trusses.
Truss Plate Institute Announces Development of New ANSI Standard – TPI 3: National Design Standard for Bracing Metal Plate Connected Wood Trusses
The Truss Plate Institute (TPI), the nationally recognized leader in metal plate connected (MPC) wood truss engineering standards, has officially initiated the ANSI-accredited consensus process to develop a new American National Standard titled TPI 3 – National Design Standard for Bracing Metal Plate Connected Wood Trusses. Notice of the project was published in ANSI’s Standards Action on July 25, 2025.
The new TPI 3 standard will establish design requirements and methods for both permanent and temporary bracing of MPC wood trusses. It will build upon and ultimately replace the current industry standard known as DSB - National Design Standard for Bracing Metal Plate Connected Wood Trusses. The TPI 3 standard will focus on engineering-based bracing design practices applicable to building designers, truss engineers, and structural engineers of record.
TPI is now accepting applications from interested individuals who wish to serve on the TPI 3 Project Committee. Stakeholders directly and materially affected by the content of the proposed standard are encouraged to apply. Application forms and additional information about the project are available on the TPI website at www.tpinst.org.
The development of TPI 3 will follow TPI’s Project Committee Method for Achieving Consensus (PCMAC), an ANSI-accredited process that ensures balanced participation and transparency. The resulting standard is anticipated to eventually be referenced by the International Building Code (IBC) and serve as a resource for the design of structural bracing of MPC wood trusses.
For more information or to request an application, contact the Truss Plate Institute directly.
About TPI
The Truss Plate Institute is a national trade association with the mission to maintain the truss industry on a sound engineering basis. TPI develops and maintains ANSI-accredited design and construction standards for metal plate connected wood trusses. Through its Technical Advisory Committee and staff, TPI provides technical expertise, supports research, and works in coordination with other industry organizations to advance structural building practices. For more information, visit www.tpinst.org or call 240-587-5582.
Contact:
Jay P. Jones, P.E.
Executive Director, TPI
240-587-5582
jjones@tpinst.org