Does anyone know where to find a good example of the Modal seismic analysis described in ASCE 7-98 9.5.4 when Equivalent Lateral Force can not be used due to horiz/vert irregularities? Does RAM use this procedure? I can't seem to find anything. Thanks in advance!
In the September 2003 issue of Structural Engineer, there is an article on Seismic design usig structural dynamics.
RAM will do a respose spectra analysis, you may want to check out the help file for that.