The book covers the design of cold-formed steel structures in building based on the Eurocode 3 package, particularly on EN 1993-1-3. For this purpose, the book contains the essentials of the theoretical background and design rules for cold-formed steel sections and sheeting, members and connections for building applications. Elaborated worked examples and design applications - more than 200 pages - are included in the chapters in order to make them more understandable for the reader.