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Eurocode 8 Design acceleration response spectrum (for design of ductile structures in the inelastic range with the behavior factor q)
Calculation of the design response spectrum in terms of spectral acceleration representing the seismic action in the horizontal or vertical direction. Applicable for the design of ductile structures where the inelastic behavior is taken into account explicitly with the behavior factor q.
EN 1998-1:2004 Section 18.104.22.168
Supported National Annexes:
In addition to countries that adopt the CEN recommended values for NDPs, the following National Annexes are also supported automatically: Belgium, Czech Republic, Greece, Norway, Portugal, Slovenia