Seismic loading of the constructions includes a significant area of seismic engineering. The course introduces the basic concepts and knowledge in this field. Basic interpretation of seismic events and evaluation of data in time and frequency domains, both velocity and acceleration records are presented. To evaluate the seismic loading of structures by earthquakes in the Czech Republic, Eurokód 8 is used. To evaluate the seismic loading by technical vibration, it is used the Czech Technical Standard ČSN 73 0040.