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DISTRIBUTION OF BASE SHEAR ON SMRF

DISTRIBUTION OF BASE SHEAR ON SMRF

(OP)

I am accustomed to applying 1)Equivalent Static Analysis (ESA) in distributing seismic base shear and design the structural elements, say beams, 2) firstly by using conventional moment distribution (equilibrium method). All these are done, 3) we can now start the design for rebars.
But ACI codes has set limitations on it when a building architectural/structural demands falls into one of the irregularity categories that requires the application of Dynamic Analysis (DA).
I have tried to look into some really helpful references on DA using response spectrum; the easiest method amongst the other DAs.
Question:
Do we still need to use DA for steps 2 and 3 if we applied DA to distribute the seismic shear to the SMRF by response spectrum method, i.e. step 1 ?

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