GNGTS 2024 - Atti del 42° Convegno Nazionale

Session 2.2 GNGTS 2024 Table 2. ReconstrucCon unit costs (in 2021 USD/m ² ) defined in this project for each EMCA residenCal building typology in each Central Asia country. Conclusion This short note describes the exposure model (populaCon and residenCal buildings) developed for Central Asia within the project “ Regionally consistent risk assessment for earthquakes and floods and selec9ve landslide scenario analysis for strengthening financial resilience and accelera9ng risk reduc9on in Central Asia ”. The regional exposure database relies on the previous exposure assessments carried out in Central Asia. However, it introduces substanCal improvements by including up-to-date local- scale data for each Central Asia country and by homogenizing these data into a single, regionally-consistent database. In parCcular, the exposure assessment allows to increase the spaCal resoluCon of the previously exisCng exposure layers, comprise a large number of assets into a single and consistent regional dataset, and include exposure abributes that were not characterized prior to this project (e.g., country-based reconstrucCon costs). Results of the exposure assessment show that the exposed assets in central Asia are distributed heterogeneously, with large differences between urban and rural areas. In parCcular, a large fracCon of residenCal reconstrucCon costs is located in the main ciCes and urbanized areas. One of the challenges when developing such a comprehensive database is the difficulty of gathering data and combining different data sources together. The work presented here relies on the available global and regional-scale datasets, mostly provided by third-parCes, which are paramount in order to collect exposure layers in a Cmely manner. To the extent possible, such data underwent specific validaCon procedures, made possible by Type EMCA Material Kazakhsta n Kyrgyz Republic Tajikista n Uzbekista n Turkmenista n EMCA 1 Unreinforced masonry (URM) 190 175 175 175 105 EMCA 2 Reinforced concrete frame (RC) 570 400 425 400 180 EMCA 3 Reinforced concrete precast (RCPC) 425 425 425 400 180 EMCA 4 Adobe 125 125 125 190 125 EMCA 5 Wood 330 330 177.5 300 648 EMCA 6 Steel 175 175 175 175 175