In steel framing, what is the primary advantage of using bolted connections over welded connections?
Correct Answer
C) Field adjustability and inspection
Bolted connections allow for field adjustments during assembly and can be easily inspected visually, unlike welded connections which require specialized non-destructive testing for quality assurance.
Why This Is the Correct Answer
Bolted connections provide significant advantages in field adjustability, allowing contractors to make modifications and corrections during assembly without specialized equipment. Visual inspection of bolted connections is straightforward - you can see if bolts are properly tightened, aligned, and secure. Welded connections require expensive non-destructive testing methods like ultrasonic or radiographic testing to verify quality. This makes bolted connections more practical for field construction where adjustments and quality verification are critical.
Why the Other Options Are Wrong
Option A: Lower material cost
Bolted connections typically have higher material costs than welded connections due to the cost of high-strength bolts, nuts, washers, and additional steel required for connection plates and bolt holes.
Option B: Higher strength capacity
Welded connections generally have higher strength capacity than bolted connections because the weld creates a continuous material connection, while bolted connections are limited by bolt shear and bearing strength.
Option D: Faster installation time
Welded connections are typically faster to install once the welder is set up, as welding can be continuous, while bolting requires individual placement and tightening of each bolt to specified torque values.
Memory Technique
Think 'BOLT = Better On-site, Less Testing' - bolted connections are better for field work because you can see what you're getting without special testing equipment.
Reference Hint
Florida Building Code, Chapter 22 - Steel, or AISC Steel Construction Manual, Chapter J - Design of Connections
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