ICC-ES AC449
Full Name
ICC-ES AC449 – Acceptance Criteria for Tension-controlled Open Web Steel Joists
Scope
ICC-ES AC449 outlines the acceptance criteria for tension-controlled open web steel joists used in building construction. The criteria cover various aspects of product performance, including:
- Structural capacity: evaluates the joist’s ability to resist bending, shear, and axial loads.
- Connection strength: assesses the strength and behavior of the connections between the joist members and supporting elements.
- Deflection: ensures the joist meets allowable deflection limits under service loads.
- Durability: evaluates the long-term performance of the joist under sustained loads and environmental factors.
- Fire resistance: assesses the joist’s fire resistance and its ability to maintain structural integrity during a fire.
The purpose of AC449 is to provide a standardized framework for evaluating tension-controlled open web steel joists, ensuring they meet the minimum requirements for safety and performance in building construction under the International Building Code (IBC).
ICC-ES AC449 Accredited Laboratory
Applied Testing & Geosciences, LLC is accredited for performing tests using the ICC-ES AC449 acceptance criteria.
Contact us for more information.
Resources
Keywords
tension-controlled open web steel joist; structural capacity; bending; shear; axial load; connection strength; deflection; durability; fire resistance