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A response spectrum plots the peak response of a single-degree-of-freedom system against its

  • A.natural period
  • B.mass expressed in kilograms
  • C.height measured above the foundation
  • D.distance from the epicentre

Answer: A

For one ground motion and one damping value, a family of oscillators of differing period is solved and the maximum response of each is plotted. Reading the curve at a structure's own period gives the demand on it directly.

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