FRIBAS: A PARAMETRIC DATABASE OF BUILDING AND SOIL FEATURES INCLUDING THE FUNDAMENTAL FREQUENCY OF RESONANCE

The FRIBAS database collects information on the characteristics of more than 300 buildings located in southern and northeastern Italy. The characteristics comprise age, construction material, storey number and other data such as geometrical features (e.g. shape) and construction details (e.g. roof type, floor types). Such characteristics were inferred based on external and sometimes internal building inspection, combined with information provided by residents. In addition, FRIBAS includes the fundamental frequencies of buildings and foundation soil, estimated empirically using single station ambient noise measurements. The database was assembled based on data collected separately in northeastern and southern Italy on different building types (including both low to mid-rise historical and modern masonry and low to high-rise reinforced concrete buildings). The buildings were chosen also based on the possibility of accessing the interior and performing measurements. Data were harmonized into 37 fields which provide a generalized classification of building and soil parameters. FRIBAS is the first database that collects several buildings characteristics, including structural and geometrical features, together with the fundamental frequencies of buildings of and foundation soil. FRIBAS was assembled with the specific purpose of analyzing how different building parameters influence structural behavior (in particular, the fundamental period). The database is available online in open access mode under the CC 4.0 license. The collected data support the definition of different period-height relationships based on construction material and soil types. The analysis can be extended to other parameters associated with specific building types. We discuss the relevance of empirical building and soil characterization for seismic damage/risk assessment and propose potential applications of the FRIBAS database.