I am using RAM Structural System and have created two models. The second model has only the moment frames for the lateral system. I reduced the Ss and S1 values by 25% in the seismic load generator. I verified that my base shear and story shears are 25% of the true values.
I am using a "Dual System with Intermediate moment frames..." and "Special Steel Concentrically Braced Frames". The building is a two story classroom building classified in seismic design category D. There is a large base shear of 682K. Also, W8 columns are to be used to "fit" within the cmu...