Bolt Torque

Load Testing

The Amercian Institue of Steel Construction (AISC) requires adherence to certain procedures for tightening high-strength bolts.

Proper high-strength bolt installation includes periodic quality assurance by tightening the bolts in a device capable of indicating bolt tension. All quality assurance inspections must be conducted by someone other than the personnel directly involved with the installation. Dunlop NDT’s Certified ICC Special Inspectors are trained and qualified to perform inspections in accordance with AISC and project specifications.

From snug tightened joints, turn-of-nut pretensioning verification, direct-tension-indicator pretentioning or tension-control bolt pretentioning our team can provide your inspection needs to ensure your project is in compliance with defined specifications and industry standards.