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Story drift limitations

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The Seismic Design Manual, Vol 1, provides an example calculation of story
drift (Example 31) wherein the drift is calculated as 0.025 x story height
in inches (period less than 0.7 sec).  A reading of the 1999 SEAOC Blue book
commentary under C105.10, paragraph #2 supports this.

Dan Morrow
Swenson Say Faget
2124 3rd Ave. Suite 100
Seattle, WA  98121