Technical Downloads

The following publications are available as free downloads.  Visit the TPI Store for additional products and services offered by TPI.

Reports & Guidelines

  • TPI Tech Report No. 2: Minimum Standards for Truss Chords of Visually Stress-rated Lumber - Updated 6/12/08 - Free Download
  • TPI/WTCA Guidelines for Use of Alternative Preservative Treatments With Metal Connector Plates - Free Download

ANSI/TPI 1-2014 Standard (Read-Only) & Related Errata

  • TPI 1-2014 National Design Standard for Metal Plate Connected Wood Truss Construction (Read-Only PDF) - This is a read-only file and includes only the Standard portion of TPI 1-2014. Free Download  For the complete Standard, which includes a Commentary and Appendices, visit the TPI Store.
  • What's Changed? (Read-Only PDF) - This read-only file summarizes the non-editorial changes that have been made to the TPI 1 Standard since the prior edition. Free Download
  • TPI 1-2014 Errata (06/01/2017) (PDF) - Free Download

ANSI/TPI 1-2007 Errata, Addendum and Related Documents

  • TPI 1-2007 Errata (07/15/2011) (PDF) - Free Download
  • TPI Alternative Joint Inspection Procedure Using a Specified Position Tolerance (PDF) Note: this alternative joint inspection method was developed by members of the industry and has been reviewed by the TPI Technical Advisory Committee (TAC) and approved by the TPI Board. Although it is currently not part of an ANSI approved standard, it is TPI's opinion that this method adequately satisfies the intent of the inspection procedures specified in Section 3.7 of the ANSI/TPI1-2007 National Design Standard for Metal Plate Connected Wood Truss Construction.- Free Download
  • Commentary & Appendices to ANSI/TPI 1-2007 (Read Only PDF) - Free Download

ANSI/TPI 1-2002 Errata, Addendum and Related Document

  • TPI 1-2002 Errata (revised on 7/18/03) - Free Download
  • Addendum to Chapter 2: Responsibilities in the Design Process Involving Metal Plate Connected Wood Trusses (revised on 1/1/05) - Free Download
  •   Addendum to Chapter 6: Materials and General Design Considerations (revised on 1/1/05) - Free Download
  • TPI Interim Guideline for ANSI/TPI 1-2002 Section 8.9.2 (PDF) - Free Download
  • TPI Alternative Method for Quality Criteria in Metal Plate Connected Wood Truss Construction (PDF read-only) - Note: this alternative method to the ANSI/TPI 1-2002 edition was developed by members of the industry and reviewed and approved by TPI 12/7/06. This material is the basis for Chapter 3 of the ANSI/TPI 1-2007 edition listed above. -
  • Commentary & Appendices to ANSI/TPI 1-2002 (Read Only PDF) - Free Download