Description:

What's Changed? (list of non-editorial changes from prior edition)

ANSI/TPI 1 establishes minimum requirements for the design and construction of metal-plate-connected wood Trusses. This Standard describes the materials used in a Truss, both lumber and steel, and design procedures for Truss members and joints. Responsibilities, methods for evaluating the Metal Connector Plates, and manufacturing quality assurance for the Trusses are also contained in this Standard.  ANSI/TPI 1-2022 consists of the Standard and Commentary & Appendices.  New in this edition are enhanced provisions for Top-Chord-bearing Trusses, a method for evaluating reinforced Web members, and an updated standard for testing Trusses (non-mandatory). ANSI/TPI 1-2022 is referenced in the 2024 International Building Codes.

TPI 1 was first published as an ANSI Standard in 1995 (ANSI/TPI 1-1995). Since 1995, TPI has been updated through TPI's ANSI approved consensus process. Subsequent TPI 1 publications are ANSI/TPI 1-2002 , ANSI/TPI 1-2007, and ANSI/TPI 1-2014, Earlier predecessors to TPI 1 can be purchased upon request.

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