The design of composite steel/concrete buildings in EC8, covered in Section 7 of EN1998-1 (2004), largely follows the general methodology adopted for steel structures (Section 6 of EN1998-1). Accordingly, most of the approaches and procedures discussed in the previous chapter also apply to composite steel/concrete structures, with some differences related mainly to ductility requirements and capacity design considerations. This chapter highlights these differences, discusses a number of key behavioural and design aspects, and concludes with an illustrative design example.