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Testing Laboratories/Special Inspection Publications

Note: For current versions of these documents, see the Interpretation of Regulations (IR) or DSA Publications page.

  • IR 17-2: Nondestructive Testing (N.D.T.) of Welds
    Clarifies the minimum requirements for Laboratory Evaluation and Acceptance facilities performing NDT. Originally issued as CR 17-2.
  • IR 17-3: Structural Welding Inspection; 2007 and 2010 CBC
  • IR 17-6: Structural Special Inspector Duties and Responsibilities
    Clarifies special inspector duties and responsibilities for projects under DSA jurisdiction.
  • Bulletin 07-03: Defective Product Alert: Structural Tube Steel
    It has come to DSA's attention that there are seam weld issues with some structural tube steel being fabricated for California school construction projects. In an effort to alert concerned parties, and investigate the scope and magnitude of the problem, DSA has issued this Bulletin.

    Pictures of some defective welds discovered in DSA's investigation so far are available.