The Steel Deck Institute (SDI) announces the release of the ANSI/SDI AISI S100-2024 North American Specification for the Design of Cold-Formed Steel Structural Members. This updated edition replaces the 2016 version and its supplements.
In 2023, the SDI took over responsibility for 34 cold-formed steel standards previously managed by the American Iron and Steel Institute (AISI) after AISI ceased supporting these critical standards. In 2024, SDI reaffirmed, updated, or completed the development of a new standard for 29 of the former AISI standards.
Additionally, 17 standards related to cold-formed steel framing have been transferred to the Steel Framing Industry Association (SFIA), while 4 standards concerning metal building systems have been transferred to the Metal Building Manufacturers Association (MBMA).
The 2024 edition of the S100 Standard includes all revisions approved before AISI withdrew from standards development. This, along with the 29 other updated standards, is available for free download on the SDI website.