Seismic Vulnerability and Risk Assessment of the Lisbon Metropolitan Area

Abstract

This chapter presents an index-based seismic vulnerability assessment methodology, based on the GNDT level II approach, to be used in the seismic risk assessment of the residential building stock in the Lisbon Metropolitan Area. The buildings’ physical vulnerability and exposure were defined using data from the 2011 national population and housing Census. The seismic vulnerability assessment methodology was then applied to the 292,978 reinforced concrete and 152,916 unreinforced masonry buildings within the Lisbon Metropolitan Area. A GIS tool was afterwards used to combine the vulnerability results and the seismic hazard data, allowing identifying and analyzing the areas of higher vulnerability and risk, as a way to improve the ability of stakeholders to devise efficient resilience improvement and disaster mitigation plans.