Thanks, Mario. In the context of your response; what is the best method to set up load cases to determine the most unfavorable conditions?

Can [OPE + U(i)] inertia cases and [OPE + D(i)] SAM cases be run separately, then combined using SRSS and added to one another?

Or do the displacement cases (D) need to be considered in OPE cases including inertia (U) and algebraically, individually subtracted out before combining using SRRS?