Hi friends

I have a doubt about dynamic Earthquake analysis:

I am using a sismic spectrum for each direction in an flexibility analysis, I mean, one sismic spectrum for X, one for Y and one for Z in a single analysis.

Do you think that consideration is under CAESAR II dynamic analysis requeriments??

How can I combine these sprectrums ??

In the \Examples subdirectory (installed with the software) you can checkout the NUREG9 job. This shows you how to apply spectra in different directions in the same dynamic load case.