Earthquake disaster is increasingly of global concern as it threatens the worldâ€™s population, economy, and sustainable development. It is the responsibility of civil engineers to design and build earthquake-resistant structures, in order to minimize the earthquake risk. By reducing losses of lives and properties, socio-economical sustainability can be achieved. This unit provides the fundamental knowledge of the basic science of earthquakes and its effects on the natural and built environment. Basic theory of structural dynamics will be covered. Concepts and techniques of seismic analysis and design will be introduced.