ICC-ES AC479
Full Name
ICC-ES AC479 – Acceptance Criteria for Wood Structural Panels and Sawn Lumber with a Factory-applied Fire-retardant Coating
Scope
ICC-ES AC479 establishes the acceptance criteria for evaluating wood structural panels and sawn lumber that have been treated with a factory-applied fire-retardant coating. ICC-ES AC479 is intended for manufacturers seeking approval for their products under the ICC-ES evaluation report program.
The scope of AC479 covers:
- Materials: defines the acceptable types of wood structural panels (e.g., plywood, OSB) and sawn lumber, as well as the types of factory-applied fire-retardant coatings that can be used.
- Performance requirements: specifies the fire performance properties that the treated wood products must meet, such as flame spread, smoke development, and fire resistance ratings.
- Test methods: outlines the specific tests and procedures to be followed to evaluate the fire performance of the treated wood products, including standardized fire tests.
- Quality control: details the quality control measures that manufacturers must have in place to ensure consistent product quality and compliance with the acceptance criteria. This may include requirements for coating application, curing, and testing.
Resources
Keywords
fire-retardant coating; wood structural panels; sawn lumber; acceptance criteria; evaluation report; fire performance; test methods; quality control; flame spread; smoke development; fire resistance rating