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IBC Table 1617.3 use lower story drift limit & not design curtain walls for drift?

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IBC Table 1617.3  Allowable Story Drift, has a smaller allowable drift limit for "all other buildings" and a higher allowable drift limit for "Buildings...four stories or less in height with interior walls, partitions, ceilings, and exterior wall systems that have been designed to accommodate story drifts."  1621.2.3 has requirements for exterior walls being able to accommodate in-plane story drift and 1621.2.2 indicates architectural components need to be able to accommodate story drift.


Is the intent of the code that you can design for the lower drift limit and not prove the architectural component ability to accommodate in-plane drift?


Scott Haan, P.E.