Commercial High Rise

Project Types:

STRAAM was contracted to provide Ambient Vibration Monitoring for the building with a view to assessing the integrity of the structure, system identification, identification of any areas of weakness and the calibration of a mathematical model in the absence of any drawings.

STRAAM conducted the ambient vibration survey and used the results to identify natural frequencies, mode shapes, and any anomalies in the building. In all cases the local traffic of the adjoining streets was used as the source of excitation.

The results were used to validate the model and to use the model for an assessment of the building and the possibility of adding three additional floors to have been valid.

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Client

  • Weidlinger Associates

Location

  • 5th Avenue, New York

Services Provided

  • Data Collection
  • System Identification
  • Identification of any areas of weakness

Value Added

  • Identified structural characte ristics
  • Allowed the calibration of a finite elementmodel
  • Formed the basis for the addition of three floors

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