ICC-ES AC109
Full Name
ICC-ES AC109 – Acceptance Criteria for Thermoplastic Composite Lumber Products
Scope
ICC-ES AC109 establishes the acceptance criteria for evaluating the performance of thermoplastic composite lumber (TCL) products. These criteria ensure that TCL products meet the requirements of the International Building Code (IBC) and the International Residential Code (IRC) for specific applications.
Key aspects covered within the scope of AC109 include:
- Structural performance: assessment of TCL products’ ability to resist loads and maintain structural integrity for intended uses like decking, guardrails, and trim.
- Durability: evaluation of TCL products’ resistance to weathering, moisture, UV radiation, insects, and other environmental factors.
- Fire performance: assessment of TCL products’ fire resistance properties, including flame spread, smoke development, and heat release.
Specific applications covered by AC109 include:
- Exterior flooring (decking): evaluation of TCL decking for slip resistance, fastener compatibility, and long-term performance under various weather conditions.
- Guardrail systems: assessment of TCL guardrails for strength, stiffness, and impact resistance to ensure safety and code compliance.
- Nonstructural trim: evaluation of TCL trim components for dimensional stability, appearance, and weathering performance.
Resources
Keywords
thermoplastic composite lumber; structural performance; durability; fire performance; decking; guardrail; trim; weathering; moisture resistance; UV resistance; flame spread; smoke development; heat release