JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. D9.B. Japanese Codes - Steel Design per 2005 AIJ STAAD.Pro is capable of performing steel design based on the Japanese code AIJĀ 2005 Design Standard for Steel Structures. D9.B.1 General D9.B.2 Member Capacities D9.B.3 Design Parameters D9.B.4 Von Mises Stresses Check Parent topic: D9. Japanese Codes