Elastic Response Spectra: SIA 261

This lecture covers the elastic response spectra defined in the Swiss code SIA 261, focusing on seismic hazard zones, soil classes, damping effects, and the relationship between peak ground acceleration and structural response. The instructor explains the fundamental period of a building, the Newmark spectra, and the parameters used to define the spectra. The lecture also discusses the impact of soil class on the shape of the response spectrum and the effect of damping ratio on elastic spectra.