Red Seal Ironworker (Generalist) Practice Exam

What is the purpose of bolt tensioning in structural steel assembly?

1. To ensure bolts are permanently anchored

2. To prevent corrosion of the bolts

3. To ensure bolts are tightened to the correct specifications

4. To allow for flexibility in the structure

The correct answer is: To ensure bolts are tightened to the correct specifications

The purpose of bolt tensioning in structural steel assembly is crucial for ensuring the integrity and performance of the structure. When bolts are tensioned, it means that they are tightened to specific torque levels that meet design specifications. This proper tensioning creates a clamping force that holds the connected elements together, preventing them from shifting or separating under load. The correct tensioning helps to maintain the desired load transfer and reduces the likelihood of joint failure due to loosening or fatigue over time. In contrast, other options, while related to the general context of structural integrity, do not accurately address the primary purpose of bolt tensioning. For instance, while anchoring bolts can contribute to a secure structure, bolt tensioning focuses more on achieving optimal tightness rather than permanent anchoring. Preventing corrosion is also an important factor for the longevity of steel components but is achieved through different means such as coatings or material selection rather than tensioning itself. Flexibility within a structure is generally designed into the structural components through engineering, rather than relying on the tensioning of bolts, which generally aims for rigidity and stability.