4.1.8.9.(5)

Intent

Intent 1:

To supersede the application of Sentence 4.1.8.9.(1) and allow the use of alternate values of RdRo equivalent to those for a listed Seismic Force Resisting System, where it can be demonstrated through testing, research and analysis that the performance of a structural system is at least equivalent to that of the listed Seismic Force Resisting System.

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