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yes sir g, the word structure means complete structure along with the dampers. I have calculated the dampers as 10 to 11% damping and assuming that we can achieve the damping of structural steel as 3% to go close to 14 to 15 % system damping. But the question is , Is there any way that you can check this in ETABS model at the end of analysis rather than calcualting from the damper properties or the supplier values. we just want to make sure taht what we assume we tune our sturture to that damping and workout the forces based on that. Excuse me for late replying. Just for refernce i have attached the model snapshot and damper i am using. RSFJ Structural Modelling_04.18.pdf