The American Concrete Institute (ACI) announced the release of the 2025 edition of its flagship document, “ACI CODE-318-25: Building Code for Structural Concrete – Code Requirements and Commentary.” This updated edition is now available to ACI 318 PLUS platform subscribers and will be offered for purchase in print and digital formats through the ACI Store in early Spring 2025.
ACI CODE-318-25 remains the definitive resource for the materials, design and detailing requirements of structural concrete buildings and nonbuilding structures. Developed through an extensive consensus process, the document addresses all major structural systems, including cast-in-place, precast, shotcrete, plain, nonprestressed, prestressed and composite construction.
This latest edition introduces significant updates, including a new sustainability appendix that reflects modern construction practices, revised requirements for post-installed reinforcing bars, and enhanced provisions for shear friction. Additional updates include improvements to deep foundation requirements across all seismic design categories and clarified guidelines for cantilever and basement wall shear design.
The document also features numerous advancements in seismic design provisions, the addition of a performance-based wind design appendix and modifications to development length equations. Enhanced language on the development, embedment, and anchorage of reinforcement, as well as new strength reduction factors for breakout failure, are also included, along with updated guidance for developing closely spaced bars in tension.
