Massachusetts Unrestricted Construction Supervisor License Practice Test

What method is best for checking the quality control of high strength bolts in steel framed buildings?

1. Visual inspection

2. Sound testing

3. Torque wrench and turn of the nut method

4. Ultrasonic testing

The correct answer is: Torque wrench and turn of the nut method

The best method for checking the quality control of high strength bolts in steel framed buildings is the use of a torque wrench and turn of the nut method. This approach ensures that the bolts are tightened to the proper tension, which is crucial for ensuring the structural integrity and performance of the bolted connections. In high strength bolt connections, achieving the correct level of tension is critical because it affects the clamping force that holds the connected parts together. The torque wrench method involves applying a specified torque to a bolt, which directly correlates to the tension within the bolt. The turn of the nut method further enhances this by allowing for additional rotation of the nut after a specific torque has been reached, ensuring that the bolt is not only tightened to a required standard but that it is also properly engaged with the connected elements. Utilizing these methods is widely accepted and conforms to industry standards and specifications, such as those set forth by organizations like the American Institute of Steel Construction (AISC) and the American Welding Society (AWS). The combination of precise torque application and controlled rotation helps mitigate the likelihood of bolt failure under loads by ensuring that connections remain secure throughout the structure's lifecycle. Other methods, while useful in different contexts, do not provide the same level of assurance when