Structural Steel Inspection Services

Structural Steel & Weld InspectionsStructural Steel Inspections performed by an independent third-party inspection company are required by many commercial construction projects to maintain building code and project specification compliance. Items typically inspected include welds, bolts and all steel elements of the structure or building.

Inspections are performed by certified inspectors using standard NDT methods including Visual Testing (VT), Penetrant Testing (PT), Magnetic-Particle Testing (MT) and Ultrasonic Testing (UT).

Many different certifications are required to perform structural steel inspections including Certified Weld Inspector (CWI), ICC Certified Special Inspectors (S1 & S2) and SNT-TC-1A Compliant NDT Level II and Level III certifications.

Dunlop NDT can assist you with the following types of structural steel inspections:

  • Bridge Weld Inspections
  • Decking & Joist Inspections
  • Dye Penetrant Testing
  • Fillet Weld Inspections
  • High Strength Bolting Inspections
  • ICC Special Inspections
    • S1 – Structural Steel & Bolting
    • S2 – Structural Welding
  • Load Testing
  • Magnetic Particle Testing
  • Pattern Verification Services
  • Pre-tension Verification Inspections
  • Structural Welding Inspections
  • Ultrasonic Testing
    • Shear Wave
    • Straight Beam
  • Visual Weld Inspections

Common Testing Standards and Codes

Structural steel inspections utilize a wide variety of codes, standards, and documentation including:

  • AWS – American Welding Society
    • D1.1 – Structural Welding (steel)
    • D1.2 – Structural Welding (aluminum)
    • D1.3 – Structural Welding (sheet steel)
    • D1.4 – Structural Welding (reinforcing steel)
    • D1.5 – Bridge Welding
    • D1.6 – Structural Welding (stainless steel)
    • D1.7 – Structural Welding (strengthening and repair)
    • D1.8 – Structural Welding (seismic supplement)
    • D1.9 – Structural Welding (titanium)
  • RCSC – Research Council on Structural Connections
    • Specification for Structural Joints Using High-Strength Bolts
  • IBC – International Building Code
  • AISC – American Institute of Steel Construction
    • Steel Construction Manual
  • SJI – Steel Joist Institute
    • Code of Standard Practice for Steel Joists and Joists Girders
    • Code of Standard Practice for Composite Steel Joists
  • Project Specifications and Drawings