STAAD.Pro HelpDesignD. Design CodesD12.Norwegian Codes D12.Norwegian Codes D12.A. Norwegian Codes - Steel Design per NS 3472 / NPDD12.B. Norwegian Codes - Steel Design per NORSOK N-004 STAAD.Pro is capable of performing steel design based on the Norwegian code NORSOK N-004 Rev 2, October 2004. Code checks for tubular (pipe) members is performed per the code.Parent Topic: D. Design Codes