GSA is a general purpose frame and finite element analysis tool, also providing steel member and reinforced concrete design. GSA allows seismic analysis via code based equivalent static loads, modal and code based response spectra. << Details >>
Siren allows investigation of a site response to a seismic event. The site is modelled as a column of soil overlying bedrock. Excitation is assumed to apply at the bedrock level and an explicit time integration scheme is used to calculate the soil response with time.
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Sigraph allows time-history and related data to be displayed as a series of "curves". At any point the data can be edited and manipulated in a familiar spreadsheet style.<< Details >>
