Tripartite Plots & Smooth Response Spectrum 2

[AMaloff]

I'm trying to find a software that I can use to plot four-way logarithmic graphs (response spectrum). Right now I'm doing this by hand. In addition I'm trying to find a software to construct smoothed response spectra out of attenuation relationships

This will be used to construct plots for various site-to-source distances values an so on. If someone can provide me any assistance on this matter I will be very gratefull

Regards,

 

[ishvaaag]

I have EQPACK by CASE Computer Aided Structural Engineering Inc that produces response spectrum charts (DOS). This is cheap item. They say it is part of a big package of related seismic applications to structural engineering so I bet if this is not exactly what you need they may have something that does. Make a search for CASE.

 

[stack]

The RISA-3D demo program has spectra entry and tripartite plotting built in. You can download the demo for free from

http://www.risatech.com

.