The Research Council on Structural Connections (RCSC) has published the 2020 edition of it's Specification for Structural Joints Using High-Strength Bolts. The newest edition includes a number of significant updates and additions that will impact the way structures are designed and built. The two most significant changes in relation to the TNA Fastening System [...]
LeJeune Bolt Company continues to work with innovative partners to bring the TNA® Fastening System to the broader steel construction market. One of those partners, SidePlate Systems, recently announced their newest product, SidePlate Plus, has received AISC approval for inclusion in the latest edition of ANSI/AISC 358 " Prequalified Connections for Special and Intermediate [...]
This 2,100-foot KCS-Redland Bridge, operated by Kansas City Southern Railway, was the first major steel-deck railway bridge in the United States and weighs approximately 2,400 tons. After experiencing issues with critical bolted connections on the Arkansas River Bridge near Redland, Oklahoma, the Engineering Firm Wiss, Janney, Elstner & Associates examined and tested these connections [...]
CoreBrace, the leading designer and fabricator of Buckling Restraint Braces, recently tested our ASTM F3148 TNA Fastening System at UCSD. CoreBrace calls for an exacting installation process of it's BRB's to ensure their performance. The installation process requires the installer to perform systematic snug passes followed by final tensioning through all rows of bolts. Each [...]
Beginning September 25th, 2015 ASTM International officially recognized the TNA Fastening System with it's own specification; ASTM F3148-15 Standard Specification for High Strength Structural Bolt Assemblies, Steel and Alloy Steel, 144ksi Minimum Tensile Strength, Inch Dimensions. For us, this is a pinnacle moment in the development process. No longer is TNA just a great idea. [...]
