Spectra

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 its documentation.