Twisting Failure of the New Society Hotel


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Title: Twisting Failure of the New Society Hotel

Author(s): Lawrence G. Selna and Wai K. Tso

Publication: Special Publication

Volume: 63


Appears on pages(s): 459-496

Keywords: columns (supports); damage; deformation; detailing; earthquakes; earthquake resistant structures; failure; hotels; lateral pressure; mathematical models; multistory buildings; reinforced concrete; reinforcing steels; shearwalls; structural analysis.

Date: 8/1/1980

A five story reinforced concrete building which collapsed during the Mindanao, Philippines Earthquake of August 1976 is studied. The building experienced a twisting motion dur-ing its collapse. The damages to the building are described, and design calculations which consider the twisting are performed. The calculation results show that a number of columns were understrength but that other factors such as reinforcement detailing and material quality influenced the seismic performance of the building.