title: Seismic loading
text: # Seismic loading
  
  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).
  
  Sometimes, seismic load exceeds ability of a structure to resist it without being broken, partially or completely Due to their mutual interaction, seismic loading and seismic performance of a structure are intimately related.
  
  