Dear Dave,

Thanks for your response.

i am not converting the .FRC file to force response spectrum. i have followed the method mention in time history webinar. refer attachment for the procedure followed in my analysis (same as attachment).i have used only the .FRC to convert as force response spectrum to find the frequency cut-off not for the analysis ( i have done this separately for all the leg. hence i am using the .FRC file parameters (time vs force) in the analysis).

considering the above, please check my query and provide your views.


Thanks and Regards,
pktmurugan