Job Site Success Begins with Good Communication Landon Boucher My favorite place to meet with a customer is on the job site. Always has been. I started in this industry approximately 20 years ago as a young truss salesman for UFP in Southern California. My training consisted of building trusses in the yard, creating estimates, and completing engineering... Read More September 2023 Issue #15290 Page 86
“Person Loading” of Chords Without Structural Wood Sheathing Frank Woeste The National Design Standard for Metal Plate Connected Wood Truss Construction, ANSI/TPI 1-2022 has been updated to require a design load check that accounts for a Person Loading of a roof truss chord without structural wood sheathing. As discussed in the ANSI/TPI 1 Commentary, this loading... Read More September 2023 Issue #15290 Page 94
From CEO to Legacy: Welcome to the Karen Colonias Research Lab David Huerta As the current lab manager of the newly renamed Karen Colonias Research Laboratory, I’m proud to share what our lab does and what Karen meant to us. Our lab is responsible for testing new and existing connector, fastener and Truss plate products in support of our product development... Read More September 2023 Issue #15290 Page 108
Flat Top Chord Bracing MiTek Staff Top chords are usually braced by roof sheathing. Roof sheathing provides effective lateral bracing when nailed directly to the top chord. In cases where roof sheathing cannot be directly applied to the top chord, purlins are used to prevent lateral buckling of truss top chords. The Truss... Read More August 2023 Issue #15289 Page 96
Ground Snow vs. Flat Roof Snow MiTek Staff MiTek Engineering software gives you two options to input snow load – Ground Snow and Roof Snow (flat roof snow). What is the difference between ground snow and flat roof snow? Ground snow load, pg, is obtained directly from the American Society of Civil Engineers Standard (ASCE 7)... Read More July 2023 Issue #15288 Page 96
Are You Providing Enough Information to Avert Failures? Glenn Traylor Recently, when a building owner started getting leaks in the roof and noticed unusual variations in the ceiling, I was asked to do an inspection to determine the best way to correct a deflection problem. Upon inspection, it was very evident that the roof trusses had not been installed correctly... Read More June 2023 Issue #15287 Page 37
MSRLPC Streamlines Design Values Comparison with New Online Tool MSR Lumber Producers Council The MSR Lumber Producer Council’s new Design Values Comparison Tool makes it possible for component manufacturers and other lumber buyers to easily build a comparison table based on species, size, and grade that includes design values for both visually graded and machine-graded dimensional... Read More June 2023 Issue #15287 Page 68
Load Duration Factor MiTek Staff Lumber has ability to handle higher stresses under shorter periods of time. This characteristic is known as Load Duration Factor. Load Duration Factor typically ranges from 0.9 to 1.6 and is based on the amount of cumulative time the load is applied to the structure. Per the National Design... Read More June 2023 Issue #15287 Page 92
The Development of the Truss Plate, Part X: Split Decision on Truss Plates Joe Kannapell Four distinctly different types of truss plates came onto the market in the 1950s, but only two made it into the 1960s: the short toothed and the long toothed, neither requiring nails. These two types continued to evolve over the next decade, although along distinctly different paths, and under... Read More May 2023 Issue #15286 Page 10
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