Collection Online

The ACI Collection Online

Welcome to the online version of The ACI Collection of Concrete Codes, Specifications, and Practices.

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About the ACI Collection

The Online ACI Collection is the most comprehensive concrete reference set available for individual users. It contains all of the widely used ACI concrete and masonry code requirements, specifications, guides and reports, as soon as they are published. The Historic option of the COLOL provides users access to recent past versions of all ACI Codes and Specifications. In fact, the Online ACI Collection includes over 13,000+ pages and 300+ of the most used documents on concrete technology, and 6,000+ pages and 50+ historical codes and specs. For information on this type of resource for multiple users, please see Multi-user solutions

Topics Include:

Materials and Properties, Construction Practices, Inspection, Pavements, Use of Concrete in Buildings, Bridges and Special Structures, Precast Concrete, Masonry, and Special Processes. Additionally, it includes information about code requirements, deflection, cracking, durability problems, temperature control, nondestructive testing, and hundreds of other topics.


Title or full text search the entire ACI Collection (both current resources and past versions of all codes and specifications) using single words or phrases. Or, open the document you are interested in directly from the table of contents.

The ACI Collection online subscription

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Recent Updates To The ACI Collection Online

The ACI Collection Online contains all new committee standards and reports released throughout the year. The most recently added include:

549R-18 Report on Ferrocement

ACI Collection Index

506.6T-17 Visual Shotcrete Core Quality Evaluation Technote

304.2R-17 Guide to Placing Concrete by Pumping Methods

131.2R-17 Guide to Use of Industry Foundation Classes in Exchange of Reinforcement Models