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Housner spectral intensity is obtained by

  • A.integrating the velocity spectrum over a period range
  • B.taking the largest ordinate of the response spectrum
  • C.multiplying peak acceleration by the duration
  • D.averaging the acceleration over the whole record

Answer: A

Correct answer: integrating the velocity spectrum over a period range

Housner spectral intensity is the area under the pseudo-velocity response spectrum between about 0.1 and 2.5 seconds, the range in which most structures have their fundamental periods. Because it integrates rather than taking a single ordinate, it measures the severity of the motion across the band that matters rather than at one period.

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