Spectra is a graphical presentation add-on to Microsoft Excel. It generates
tri-axial graphics to present Earthquake Response Spectra.
The three axials are: acceleration, velocity, and displacement.
The user inputs data with period vs. velocity. Spectra generates the graphics using
these values. Microsoft Excel '95 or '97 is required.
The presentation can be customized easily. Spectra is a presentation tool only and will
not perform actual spectra calculations.
You may purchase the program by credit card. We will e-mail you the program along with