1. EN 1993-1-1: Design of steel structures - Part 1-1:General rules and rules for buildings Brussels Comité Européen de Normalisation (CEN) 2005.
2. prEN 1993-1-1: Design of steel structures - Part 1-1: General rules and rules for buildings Brussels Comité Européen de Normalisation (CEN) 2019.
3. EN 1993-3-1: Design of steel structures - Part 3-1:Towers musts and chimneys. Tower and musts Brussels Comité Européen de Normalisation (CEN) 2005.
4. EN 1993-1-5: Design of steel structures - Part 1-5: Plate structural elements Brussels Comité 000.Europeen de Normalisation (CEN) 2006.