Introduction to earthquakes and their causes, the composition of the earth‘s layers and the theory of tectonic plates, the influence of earthquake forces on civil engineering buildings, calculating the center of mass and center of stiffness of buildings, earthquake forces acting on building structures, application of response spectrum in structural calculations with the help of software (software). ) based on 1C Procedures for earthquake resistance planning for 1D building and non-building structures (SNI 1726:2012 and/or SNI 1726:2019)