News Column

Findings from R. Kashani and Co-Researchers Advance Knowledge in Construction Engineering

June 24, 2014

By a News Reporter-Staff News Editor at Journal of Technology -- Research findings on Construction Engineering are discussed in a new report. According to news reporting originating from New York City, New York, by VerticalNews correspondents, research stated, "The irregular shape of three large balconies in a performing arts center resulted in areas at the balcony tip and edge susceptible to potentially annoying levels of vibration. To mitigate this effect, the building designers added tuned mass dampers to the underside of each of the three balconies."

Our news editors obtained a quote from the research, "Proper implementation of tuned mass dampers requires reliable information about the dynamic properties of the structural system. Finite-element models of the structure were constructed and experimentally verified. These models were used to determine the size, frequency, and damping ratio of three tuned mass dampers, two of which targeted the first bending mode of the edge and the remaining one targeted the first bending mode of the tip, for each balcony. The suspensions of the tuned mass dampers were made up of two laminar flow viscous damping units along with eight precompressed helical steel springs. The mass of the tuned dampers were selected as a small percentage of the modal mass of the modes targeted for damping."

According to the news editors, the research concluded: "On completion of the tuned mass dampers installation, the effectiveness of the damping solution was evaluated via further testing."

For more information on this research see: Tuned Damping of Balcony Vibration. Journal of Performance of Constructed Facilities, 2014;28(3):450-457. Journal of Performance of Constructed Facilities can be contacted at: Asce-Amer Soc Civil Engineers, 1801 Alexander Bell Dr, Reston, VA 20191-4400, USA. (American Society of Civil Engineers -; Journal of Performance of Constructed Facilities -

The news editors report that additional information may be obtained by contacting R. Kashani, Arup, Bldg Grp, New York, NY 10005, United States. Additional authors for this research include A. Pearce and B. Markham.

Keywords for this news article include: New York City, United States, Construction Engineering, North and Central America

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Source: Journal of Technology

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