How Will the Changes to ANSI/TPI 1 Impact Your Truss Builders and In-House Inspectors? Glenn Traylor As we migrate from ANSI/TPI 1-2014 to ANSI/TPI 1-2022, it is important to discuss and be aware of Chapter 3 updates. These changes impact QC inspections and should be understood by your in-house QC inspector and your truss builders. The changes are in two categories in Chapter 3 — a... Read More July 2025 Issue #17312 Page 31
Striking Gold with Posi-Strut in Carson City Landon Boucher A large part of what MiTek’s Design Engagement team does involves meeting with Structural Engineers, Architects, and Real Estate Developers to advance the use of components. We guide them on best practices early in design so that when construction documents arrive at the truss... Read More July 2025 Issue #17312 Page 62
Changes in Flat Roof Snow Calculation in ASCE 7-22 MiTek Staff Chapter 7 of ASCE 7-22 (Minimum Design Loads and Associated Criteria for Buildings and Other Structures) introduces significant changes that affect the magnitude of snow loads and, consequently, truss design. While some of these changes reduce snow load values, others increase them. One of the... Read More July 2025 Issue #17312 Page 108
Home Building Technology, Part VI: The Original Wood Truss Manufacturers Joe Kannapell, PE Although last month’s article in this series, “Home Building Technology, Part V: Early Truss Connection Innovators,” brought our story up to the post-war time period, we would be remiss without acknowledging the original truss manufacturers in greater detail. A small group of... Read More June 2025 Issue #17311 Page 10
Home Building Technology, Part V: Early Truss Connection Innovators Joe Kannapell, PE Three midcentury forces converged to form the truss business we know today. First came the deluge of demand for affordable housing after World War II. Then came the prefabbers who addressed that need with trusses. And finally came the connector that made trusses into a blockbuster... Read More May 2025 Issue #17310 Page 10
Multiple-Ply Girder Load Distribution Change in ANSI/TPI 1-2022 MiTek Staff Girder trusses are trusses specially designed to carry extra load from tie-in trusses and equipment. If a single ply is insufficient to carry the entire load, the truss designer specifies a multiply girder, that is made of identical trusses and fastened together to act as one unit to support the... Read More May 2025 Issue #17310 Page 138
Hand Calculations for Maximum Gravity Reaction on Truss Design Drawings Alpine Team Building engineers rely on maximum gravity reactions (R+) from Truss Design Drawings (TDD) to design structural components. These maximum reactions are calculated based on load combinations specified by building codes, representing the highest downward forces which allow engineers to determine... Read More April 2025 Issue #17309 Page 131
The Evolution of Product Testing in Engineering and Manufacturing MiTek Staff Product testing is the backbone of quality control in engineering and manufacturing, ensuring products are reliable, durable, and safe before reaching the market. Over the years, the testing processes have evolved dramatically, transitioning from manual inspections to highly sophisticated... Read More April 2025 Issue #17309 Page 140
Using Truss Self-Weight Simpson Strong-Tie Staff A benefit of using Simpson Strong-Tie’s CS Truss Studio™ is managing the relationship between the truss self-weight and the dead load. Truss self-weight is checked against all applied dead loads to verify that there is enough assumed “extra” dead load to account for the... Read More April 2025 Issue #17309 Page 148
What the Latest ANSI/TPI-1 Updates Mean for Truss Designs Jay Jones, P.E. The ANSI/TPI 1 standard is a critical document that governs the design and quality criteria for metal plate-connected wood trusses. It serves as a guideline for truss manufacturers and engineers alike, providing the technical framework to design and construct reliable and code-compliant trusses... Read More March 2025 Issue #17308 Page 116