ABSTRACT
The basic concepts of today’s earthquake engineering codes were born almost 70 years ago, when knowledge about seismic actions and structural response was rather poor. Today, the earthquake-resistant design is grown within the new multidisciplinary fields of engineering seismology and earthquake engineering, wherein many exciting developments are predictable in the near future. The challenge for a proper seismic structural design is to solve the balance between seismic demand and structure capacity. Seismic demand corresponds to the effect of earthquakes on the structure and depends on ground motion modeling. Structural capacity is the structural ability to resist these effects without failure.
