This book details the basic concepts and the design rules included in Eurocode 3 Design of steel structures Part 18 Design of joints Joints in composite construction are also addressed through references to Eurocode 4 Design of composite steel and concrete structures Part 11 General rules and rules for buildings. Attention has to be duly paid to the joints when designing a steel or composite structure in terms of the global safety of the construction and also in terms of the overall cost