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NEW Offset Extrustion DTI

In 2016 the American Institute of Steel Construction (AISC) approved the enlargement of 'standard bolt holes' in the forthcoming version of The Steel Construction Manual, AISC-360. Fabricators and Erectors of steel framing will be permitted to use larger 'standard size' bolt holes for nominal sizes 1-inch and larger. The enlarged holes have an impact on structural bolting operations, and can negatively affect the use of traditional DTIs. The larger bolt holes may not fully support the DTI, leading to partial collapse into the bolt hole, and therefore not accurately indicate bolt tension.

TurnaSure's NEW Offset Extrusion DTIs meet this challenge head-on!

In order to address the challenge presented by AISCís new code, TurnaSure is introducing an innovative design solution (2015 Patent Application #14/938,081) and a new method of manufacturing DTIs. Traditional DTIs are manufactured with the protrusions ('bumps') in alignment with the 'pockets' on the bottom side of the DTIs. The new process, which we refer to as "Offset Extrusion" allows the 'bumps' to remain where they must be to fit properly under bolt heads and heavy hex nuts, while offsetting the 'pockets' towards the OD of the DTI. This ensures they are safely away from the enlarged bolt hole, allowing the DTI to function predictably and accurately.

TurnaSure Offset Extrusion DTIs will be available in sizes 1-inch and larger beginning in June 2016.



Find out how TurnaSure's NEW Offset Extrusion DTIs and our bolting technology can bring structural stability and savings to your next project. Contact our experts online or by calling 1-800-525-7193.