ICC-ES AC409
Full Name
ICC-ES AC409 – Acceptance Criteria for Composite Cold-Formed Light Gage Steel and Masonry Lintels
Scope
ICC-ES AC409 outlines the acceptance criteria for composite cold-formed light gage steel and masonry lintels. These lintels are used to support loads over openings in masonry walls, such as doors and windows.
The scope of AC409 includes:
- Materials: it specifies the requirements for the steel and masonry components of the lintels, including allowable types, grades, and dimensions.
- Design: it outlines the design methodology and load combinations to be considered, as well as the requirements for the lintel configuration, member sizes, and connection details.
- Fabrication: it addresses the fabrication process, including welding, cutting, and assembly, to ensure the lintels are manufactured to the specified tolerances.
- Quality control: it establishes a quality control program to ensure that the lintels consistently meet the requirements of the acceptance criteria, including inspections and testing.
The AC409 acceptance criteria are used by manufacturers to obtain an evaluation report from ICC Evaluation Service (ICC-ES), which demonstrates that their lintels comply with the applicable building codes and standards.
Resources
Keywords
lintel; composite lintel; masonry; steel; cold-formed steel; light gage steel; acceptance criteria; building code; evaluation report; load; design; fabrication; quality control; inspection; testing