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Which one of the following is NOT needed to read a design spectrum?

  • A.The seismic zone of the location
  • B.The construction cost of the structure
  • C.The natural period of the structure
  • D.The soil type at the site

Answer: B

Cost plays no part in determining the demand on a structure. The period fixes where on the curve the reading is taken, the soil type selects which curve applies, and the zone scales the whole of it, so those three between them settle the ordinate.

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