Spoiler Alert!
The next edition of the Aluminum Association’s Aluminum Design Manual (ADM) became available in January 2020 (Figure 1). Updated every five years, the Manual includes the Specification for Aluminum Structures which provides for allowable strength and load and resistance factor design of aluminum structures, members, and connections. Because compliance with this Specification is required by the International Building Code (IBC), changes to the Specification directly affect most building applications of aluminum in the United States. Furthermore, the Specification’s provisions are used by other code organizations, such as the American Welding Society (AWS) and the American Association of State Highway and Transportation Officials (AASHTO) in their standards for aluminum structures. This article reviews the significant changes to the Specification as compared to the 2015 edition. …