While the 2021 guide is current as of 2025, industry experts already anticipate a focusing on:

Beyond the new updates, the guide remains a comprehensive reference for:

, ensuring your projects meet the latest legal and safety benchmarks in limit states format. Key Additions in the 4th Edition

If you have a copy, point out .

The 4th edition clarifies the tension between AISC tolerances (Code of Standard Practice) and CMAA (Crane Manufacturers Association) tolerances.