ANSI/TPI 1: The National Design Standard for Metal Plate Connected Wood Truss Construction Jay Jones, P.E. After more than three years in development, I’m pleased to announce the publication of ANSI/TPI 1–2022 National Design Standard for Metal Plate Connected Wood Truss Construction. Including a Commentary & Appendices, this standard is available for purchase in print and... Read More August 2023 Issue #15289 Page 90
Should We Seal All Engineered Drawings? Glenn Traylor Recently, while conducting an ANSI/TPI audit, a splice caught my eye. When I investigated further, I realized that the bottom chord of the truss I was investigating had a very short, 2” chord segment. I immediately assumed the truss builders had cut a short block to make up for a miss-cut... Read More May 2023 Issue #15286 Page 37
Bracing on Truss Design Drawings MiTek Staff Trusses are designed as individual components to resist the in-plane stresses resulting from the loads applied in the same in-plane direction. To resist out of plane forces, adequate bracing/restraint is required. In absence of designed temporary and permanent bracing plans, BCSI (Building... Read More April 2023 Issue #15285 Page 104
Does Your Plant Have a Culture of Quality? Glenn Traylor Quality, productivity, and speed are intertwined and impact each other. My previous article, Where is Your Focus on Manufacturing?, emphasizes that improving quality starts with implementation of the ANSI/TPI 1 standard—and, with that process, you will improve proficiency and speed. The... Read More March 2023 Issue #15284 Page 35
Has Your Guideline Shifted? Glenn Traylor Recently after receiving a phone call from a client, I reflected on our conversation. I was a little caught off guard with the direction the conversation took and felt like I needed to make a few issues clear. And, it has led me to reflect on boundaries and guidelines – why they exist and... Read More February 2023 Issue #15283 Page 35
Are You Making Correct Substitutions and Placements When Upsizing Connectors? Glenn Traylor Sometimes it is necessary to deviate from the truss design drawing and use a different connector. This may happen when a specific size connector is not available or when the original connector has been removed. Per ANSI/TPI 1 Section 3.6.3, a metal connector can be substituted if the new... Read More January 2023 Issue #15282 Page 35
Why Do I Need the Software Polygons? Glenn Traylor When completing an in-house inspection, a critical plate inspection is required for each truss inspected. This requirement is from ANSI/TPI 1–2014. Specifically, per section 3.7.1: No less than one critical joint per Truss selected for inspection, on average across all operational... Read More December 2022 Issue #14281 Page 35
Understanding Plate Tooth Count and Placement Russell Tangren, PE Imagine a third-party truss inspector is in the yard checking truss plates as part of quality control. The plate placement diagram indicates the web needs twenty-five teeth; however, the inspector counts twenty. Even though the shop positioned the plates as designed, is the plate placement... Read More December 2022 Issue #14281 Page 80
The Last Word: The Last Word on Automated Material Handling Joe Kannapell With automated saws and auto-jigging tables, what remains is automated material handling, and that’s what we find at Builders FirstSource’s (BFS) Austin plant. House of Design’s (HoD) robotic roof line there extends the floor truss pre-plating methodology found at their Atlanta... Read More December 2022 Issue #14281 Page 144
Are You Removing the Connectors Carefully When Replacing Them? Glenn Traylor Face the facts—occasionally, it is necessary to replace connectors. It’s part of the manufacturing process. In my May 2016 article, Is There a Reduction For Plating in a Previously Plated Area?, we discuss the limitations and considerations of removing a plate, including upsizing the... Read More November 2022 Issue #14280 Page 33