This book introduces practising engineers and post-graduate students to modern approaches to seismic design, with a particular focus on reinforced concrete structures, earthquake resistant design of new buildings and assessment, repair and strengthening of existing buildings. Fundamentals of engineering seismology are covered in the first part, including structural dynamics, calculation of structural response, energy considerations, structural configuration, static and dynamic analysis of structures under seismic actions, represented by equivalent lateral loads, or by elastic and inelastic spectra including the Eurocode 8 spectrum. The second part explains the earthquake-related properties of reinforced concrete materials, and seismic behaviour of structural members. Eurocode 8 design provisions for each type of member are presented in detail, as well as a fully worked design application. It concludes with a discussion of methods for assessing seismic performance of structures, and several case studies involving concrete buildings with frames and structural walls with and without masonry infill panels. Seismic pathology of concrete structures, assessment of seismic capacity of existing structures, and procedures and techniques for repairing and strengthening structures are covered in the third part.