STAAD.Pro HelpDesignD. Design CodesD1.American CodesD1.K. American Codes - Steel Design per ANSI/AISC N690 Design Codes D1.K. American Codes - Steel Design per ANSI/AISC N690 Design Codes D1.K.1. ANSI/AISC N690-1994 CodeD1.K.2. ANSI/AISC N690-1984 CodeD1.L. American Codes - Steel Design per ASME NF CodesThe following American Society of Mechanical Engineers – Nuclear Facility codes are available.Parent Topic: D1.American Codes