Hi friends,
I've read some posts about this topic but I'm not clear enough.
For example, in the code of my country (Venezuela) accidental eccentricity of 6% should be defined as follow:
Due to the code is not in RSA, I need to set a Modal analysis and then a Spectral analysis. Now I've read that the eccentricity should be introduce here:
I read that selecting Add nodal masses is more accurate.
But now, I need to define eccentricities in positive and negative directions. I usually do this defining a moment Tx = Vxi x 6%By (X dir) and Ty = Vyi x 6%Bx (Y dir) and then adding these moments in 2 load cases (Tx and Ty), then I combine these cases with the seismic ones in several combinations. For example:
See that when 100%Sx is acting also act Tx and when 100%Sy is acting also act Ty, and then changing signs and so on so on. Of course I want to know if its possible to do all this work with RSA. I think the answer is YES but how? I read something about define 4 modal cases and define something like:
So I want to know if it's correct and then how I combine these 4 modal cases with the seismic ones in a spectral analysis.
How do you deal with eccentricities?
Sorry if this post it too long but I think it will help several RSA users.
Best regards,
Cesar
