GNGTS 2013 - Atti del 32° Convegno Nazionale

these two parameters lead from one side to an increase of the seismic vulnerability of buildings and on the other hand to an increase in macroseismic intensity. On the contrary ISTAT data, characterized by a lower level of knowledge, does not allow the estimation of plan irregularity of buildings and soil type conducting on average to a reduction of vulnerability and therefore to an unacceptable underestimation of damage to buildings, beyond the errors due to the process of disaggregation of the data in order to derive the distributions of the number of storeys and age of construction for the different building typology. Conclusions. In conclusion results from LIDAR data are in good agreement with those of field survey data, even though LIDAR data are characterized by a lower knowledge level that does not allow the direct evaluation of age of construction of buildings leading sometimes to tolerable scatter. On the other hand results from ISTAT data provide unacceptable underestimation of damage to buildings due to lack in knowledge level, which allows only the evaluation of distribution of age of construction and number of storeys aggregated for census cell. In this study, a multilevel seismic vulnerability assessment of the building stock of Avellino (Southern Italy) was shown, using data from different sources, namely census data, Remote Sensing (LIDAR) data integrated by census data, and data from a detailed field survey. The error in seismic vulnerability assessment introduced by the use of less detailed data was analyzed depending on the error in the evaluation of input data to the seismic vulnerability assessment procedure. Such analysis could be further developed in order to provide useful indications about the reliability of different data sources in large scale seismic vulnerability assessment of building stocks. References Decreto Ministeriale del 14/1/2008: Approvazione delle nuove norme tecniche per le costruzioni. G.U. n. 29 del 4/2/2008 (in Italian) Di Pasquale G., Orsini G., Romero R.W., 2005. New developments in seismic risk assessment in Italy. Bulletin of Earthquake Engineering, 3(1), 101-128. Giovinazzi S., Lagomarsino S., 2004. A macroseismic method for the vulnerability assessment of buildings. Proceedings of the 13 th World Conference on Earthquake Engineering, Vancouver, Canada, August 1-6. Paper No. 896. Grünthal G., 1998. Cahiers du Centre Européen de Géodynamique et de Séismologie: Volume 15 – European Macroseismic Scale 1998. European Center for Geodynamics and Seismology, Luxembourg. INGV-DPC S1, 2007. Progetto S1. Proseguimento della assistenza al DPC per il completamento e la gestione della mappa di pericolosità sismica prevista dall’Ordinanza PCM 3274 e progettazione di ulteriori sviluppi. Istituto Nazionale di Geofisica e Vulcanologia – Dipartimento della Protezione Civile, http://esse1.mi.ingv.it (in Italian) ISTAT, Italian National Institute of Statistics: Census Data 2001, http://www.istat.it/it/archivio/44523 Lagomarsino S., Giovinazzi S., 2006. Macroseismic and Mechanical Models for the Vulnerability Assessment of Current Buildings, Bulletin of Earthquake Engineering, Special Issue “Risk-Ue Project”. 4(4). Medvedev, S.V. (1977) Seismic Intensity Scale MSK-76. Publication Institute of Geophysics of Poland, Academy of Sciences, Varsaw, Poland. Ordinanza del Presidente del Consiglio dei Ministri n. 3274 del 20/3/2003. Primi elementi in materia di criteri generali per la classificazione sismica del territorio nazionale e di normative tecniche per le costruzioni in zona sismica. G.U. n. 105 dell’8/5/2003. (in Italian) Ricci P., Verderame G.M., Manfredi G., Pollino M., Borfecchia F., De Cecco L., Martini S., Pascale C., Ristoratore E., James V., 2011. Seismic vulnerability assessment using field survey and Remote Sensing techniques. In: Murgante B., Gervasi O., Iglesias A., Taniar D., Apduhan B.O. (editors). Computational Science and its Applications – ICCSA 2011. Springer-Verlag Berlin Heidelberg, 2011. ISBN 978-3-642-21886-6. Volume 6783, Part II, pp. 109-124. doi:10.1007/978-3-642-21887-3_9 SIMURAI Project (Integrated tools for large scale multi-risk assessment in urban anthropic environment), co- funded by the Italian Ministry of Research (MIUR) http://www.consorziotre.com/index.php?option=com_ content&view=article&id=76&Itemid=62 59 GNGTS 2013 S essione 2.1