Seismic risk assessment of residential buildings in Italy
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Seismic risk assessment of residential buildings in Italy Mauro Dolce1 · Andrea Prota2 · Barbara Borzi3 · Francesca da Porto4 · Sergio Lagomarsino5 · Guido Magenes6 · Claudio Moroni1 · Andrea Penna6 · Maria Polese2 · Elena Speranza1 · Gerardo Mario Verderame2 · Giulio Zuccaro2 Received: 22 May 2020 / Accepted: 10 November 2020 © The Author(s) 2020
Abstract The last National Risk Assessment NRA for Italy was developed at the end of 2018 by the Department of Civil Protection (DPC) in response to the specific requirement of the Sendai Framework for Disaster Risk Reduction 2015–2030 to periodically adjourn the assessment of disaster risk. The methodology adopted to perform seismic risk assessment and build national seismic risk maps was specifically developed to comply with the recent Code for Civil Protection, issuing that, in addition to a solid scientific base, risk assessment should be characterized by a wide consensus of the scientific community. As a result, six research units belonging to two Centers of Competence of the DPC, namely ReLUIS (Network of university laboratories for seismic engineering) and EUCENTRE (European Centre for Training and Research in Earthquake Engineering), collaborated under the guidance and coordination of DPC to produce the recent updating of national seismic risk maps for the residential building stock. This paper describes the methodology adopted to develop the consensus-based national seismic risk assessment and presents the main results in terms of expected damage and impact measures (unusable buildings, homeless, casualties, direct economic losses). Keywords Residential buildings · Vulnerability · Inventory · Economic losses · Casualties · Homeless
* Maria Polese [email protected] 1
Department of Civil Protection, Presidency of the Council of Ministers, Via Ulpiano, 11, 00193 Rome, Italy
2
ReLUIS, University of Naples Federico II, Via Claudio 21, 80125 Naples, Italy
3
EUCENTRE, Via Ferrata 1, 27100 Pavia, Italy
4
ReLUIS, University of Padua, Via Francesco Marzolo 9, 35121 Padua, Italy
5
ReLUIS, University of Genoa, Via Montallegro 1, 16145 Genova, Italy
6
ReLUIS, University of Pavia, Via Ferrata 3, 27100 Pavia, Italy
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Vol.:(0123456789)
Bulletin of Earthquake Engineering
1 Introduction The first out of four priority actions of the Sendai Framework for Disaster Risk Reduction 2015–2030 (United Nations 2015) is “Understanding Disaster Risk in all its dimensions of vulnerability, capacity, exposure of persons and assets, hazard characteristics and the environment.” Such knowledge can be used for risk assessment and is at the base for the consequent actions of prevention, mitigation, preparedness and response. In Italy, thanks also to the action of the national Department of Civil Protection (DPC), the fundamental role of the “knowledge of risk scenarios” has already been acknowledged for quite some time. Indeed, the first national risk maps date back to 1996 (GNDT-ING-SSN 1996). Since then, scientific enhancements allowed for progressive updating of the
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