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True or false: dampers are useful only in new construction.

  • A.False, since they are widely used in retrofitting existing buildings
  • B.True, since an existing building cannot accommodate a device of any kind
  • C.True, unless the existing building is founded on rock rather than on soil
  • D.False, but only for buildings originally designed to a modern seismic code

Answer: A

Retrofit is one of the main applications, because a damped brace can often be added in a bay without touching the rest of the structure. Reducing demand is frequently less disruptive than jacketing columns throughout an occupied building.

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