Seismic loading is one of the basic concepts of earthquake engineering which means application of an earthquake-generated agitation to a structure. It happens at contact surfaces of a structure either with the ground, or with adjacent structures, or with gravity waves from tsunami. Seismic loading depends, primarily, on: * Anticipated earthquake's parameters at the site - known as seismic hazard * Geotechnical parameters of the site * Structure's parameters * Characteristics of the anticipated gravity waves from tsunami (if applicable).