Structural Welding
CSI Division 05, Metals
Welding performed on structural steel connections that are critical to a building's structural integrity, distinguished from general welding by strict qualification requirements for both the welder and the specific welding procedure, since a defective structural weld can be a life-safety failure hidden inside a finished connection.
Why it matters
Structural welds are typically required to be performed by welders certified to a specific code (commonly the American Welding Society's structural welding code) and are subject to non-destructive testing, ultrasonic or radiographic inspection, precisely because a visual inspection alone can't reveal internal weld defects.
On a real project
A steel erection project requires all structural welders to hold current AWS D1.1 certification for the specific welding process and position being performed, and critical welds are tested with ultrasonic inspection before the connection is considered complete.
Who this matters most to
A Welder performing structural connections has to hold and maintain the specific certifications the project requires, distinct from general fabrication welding. A Quality Control Manager coordinates the non-destructive testing of critical structural welds as a required special inspection.
Where this goes wrong
A welder without current certification for the specific welding position performs a critical structural connection under schedule pressure, and the lapse isn't caught until a later document review. The weld has to be independently tested to confirm it actually meets code before it can be accepted, since the welder's own qualification, not just the weld's visual appearance, is part of what code compliance requires.