The IAS Inspection Program for Manufacturers of Metal Building Systems is a comprehensive
accreditation program based on the requirements of Chapter 17 of the International Building
The criteria used to assess manufacturers pursuing accreditation is IAS Accreditation Criteria for
Inspection Programs for Manufacturers of Metal Building Systems (AC472).
The criteria has three parts. Part A covers fabrication of structural weldments and cold-formed
products requiring welding; Part B covers fabrication of cold-formed products not requiring
welding; and Part C deals with the design of metal buildings.
The inspection program outlined in AC472 addresses quality management system elements such
as personnel requirements, product traceability, process control, and various administrative and
The criteria covers all metal building system elements that are essential for code officials,
architects, specifiers and contractors to confidently design, specify, build or approve, IAS-
accredited fabricators of metal buildings.