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Bentley Multiframe

Bentley Multiframe

(OP)
I am sizing members for what is supposed to be a symmetric moment frame - loading, geometry, member sizes should all be symmetrical to their counterpart.

However, my output isn't agreeing with that fact. I checked the detailed output and there was a large difference between Cb on two identically placed and sized members. The moment diagram for the member with the lower rating was much more uniform - hence a lower Cb. But, the diagrams should be (but aren't)identical. I am driving myself mad looking for either my error or (God forbid) the program error.

Find the file attached. it is from version 16.01.

Thanks!


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