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Defining an RBS section / connection in ETABs

Defining an RBS section / connection in ETABs

Defining an RBS section / connection in ETABs

I'm something of an ETABs newbie. I'm working on an job where we're modeling the structure in ETABs and we will be using Reduced Beam Sections for our Special Moment Frames.

I've figured out how to include the effect of panel zone deformation in the ETABs analysis. But, I have NOT yet been able to figure out how to tell ETABs that my frame will be an RBS. I'm not so concerned about the design of the connection itself (I can handle that by hand). But, I'd like to have the program calculate the effect the RBS section has on building drift.

Can anyone point me in the right direction? I've search the help files (which keep crashing on me, ugh!), their website, and Eng-Tips, but I haven't found any thing very helpful... at least not yet.

RE: Defining an RBS section / connection in ETABs

I got it figured out.... With the help of CSI tech support.

Assign - Frame - Moment Frame Beam Connection Type.

And, I can confirm that it DOES affect the drift of the structure. Just not very much.

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