We have a building with most of the structure rotated to the primary x and y axes. When using RAM Frame we have used the "Rotate Axes" in the dynamic response spectra load case. Our understanding is that this adjusts the direction that the seismic force is applied, but that the story forces reported in the Frame output are on the primary X and Y axes. Is this correct?
If so, is there guideance on how the X and Y scale factors are to be determined in this case. The FAQ indicates that for a primary axes that the base shear in the perpendicular direction is ignored when determining the scale factor, but it does not appear that this can be the case when the axes are rotated.