does anyone know wether the Uniform Building Code (UBC) provides psd data for acceleration or displacement for a certain seismic zone ?
I do not believe they have published one. I ran into this issue in the past and could not locate one (you might be able to, however). I resorted to conducting a "Response Spectrum" analysis. It lets you input the acceleration or displacement frequency spectrum directly from the UBC charts. Hope that helps.
Sorry forgot to mention the input curve is put on as an option when you apply "uniform base excitation". This just means (for example) a building that has fixtures to ground are excited by the acceleration or displacement curve that you enter.
Thank you a lot Tony, this is a very useful piece of information.
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