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2000 IBC seismic questions

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Two questions regarding 2000 IBC seismic provisions: 

1. Is "building height" as used in Table 1617.6 defined anywhere? Is this
the height at the maximum point on the structure relative to grade? 

2. Table 1616.6.3 permits the use of the "equivalent lateral-force procedure
with dynamic characteristics included in the analytical model" for
structures falling under item 4 in the table. How must "dynamic
characteristics" be included in the analytical model? What is this
specifically referring to? Does it simply mean accounting for actual center
of mass and center of rigidity of the various building components? 

William C. Sherman, PE
CDM, Denver, CO
Phone: 303-298-1311
Fax: 303-293-8236
email: shermanwc(--nospam--at)

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