Bolted Connections

Featured Product from AASHTO Publications


Appreciation is extended to Hytorc, Division Unex Corporation for its assistance in the development of this curriculum.

Course overview: Bolting is a common method of making connections and care should be exercised in their design, installation, and maintenance.

This course is divided into two modules: installation and inspection. For both modules, it is suggested that participants have a basic familiarity with construction and mechanical principles. All participants in Module 2: Inspection should have mastered the principles taught in Module 1: Installation, and should have experience in construction inspection.

Module 1: Installation is divided into four sections:

• Topic 1: Structural joints, their types, and how they carry load

• Topic 2: Structural fasteners and talks about their care and handling

• Topic 3: Torque and tension and how they are measured and applied

• Topic 4: Approved tightening methods and tools

Module 2: Inspection is also divided into four sections:

• Topic 1: Documentation and storage

• Topic 2: Components of pre-job inspection

• Topic 3: Calibration and testing

• Topic 4: Verification of installation

Training level: This training is recommended for the Transportation Curriculum Coordination Council levels II, III, and IV.

Target audience: This training is designed for agencies and their industry counterparts involved in the installation and inspection of bolts and bolted connections on construction projects.

Learning outcomes: Upon completion of the course, participants will be able to:

• Explain the advantages of bolts in structural joints;

• Identify the three structural joint types and discuss when each is used and the differences in how they are tightened;

• Describe structural fasteners with their various grades, forms, finishes and coatings, and how they are matched, prepared for use, accounted for, stored and handled;

• Explain the four accepted methods for achieving desired bolt preload and the relative advantages/disadvantages of each;

• Explain and give examples of the manufacturer's certificates, shipping documents, storage requirements, and site records associated with structural fasteners;

• Locate and interpret the appropriate industry standards for joint and fastener types and specifications;

• Conduct and audit torque-tension and ROCAP tests and verify test records; and?

• Explain the check points and how you would audit to verify proper assembly for the following tightening methods: turn-of-nut, torque control, DTI washers, and TC bolts.

TC3 web-based trainings are FREE for employees of state DOTs that contribute annually to the TC3 technical service program.

All sales are final. There are no refunds for web-based trainings.