STAAD.Pro HelpDesignD. Design CodesD1.American CodesD1.J. American Codes - Steel Design per API 2A-WSD 2000D1.J.8 Joint Design D1.J.8 Joint Design D1.J.8.1 Joint CheckingThe design of joints is based on Section 4 of the API code.D1.J.8.2 Joint File FormatParent Topic: D1.J. American Codes - Steel Design per API 2A-WSD 2000