Typhoon risk and climate-change impact assessment for cultural heritage asset roofs

Abstract Recent catastrophic events in Southeast Asia have emphasized that roofs made of wood/steel frames and lightweight metal roofing sheets are the most vulnerable component building envelope when subjected to typhoon-induced wind uplift. This also applies aging cultural heritage (CH) assets, which deserve special consideration because their intangible value for local communities, essential role inclusive sustainable socio-economic development through tourism. paper introduces a simulation-based framework fragility analysis typhoon risk assessment CH-asset roofs. Fastener pullout roof-panel pullover explicitly considered proposed model progressive failure roof system. A simplified geometry is assumed, requiring limited information about structure under investigation low computational resources. Such burden allows modeling wind-induced demands capacities probabilistically as well considering effects load redistributions due fastener fastener/roof-panel corrosion. Variance-based sensitivity (i.e., Sobol’ indices) based on polynomial chaos expansions limit state function performed, highlighting parameters affecting typhoon-fragility variance then attention during data collection. Climate-change impact estimates finally investigated use various scenarios time-dependent modifying hazard profile site where assets interest located. The applied 25 CH Iloilo City, Philippines. required input was collected rapid visual surveying combined with new technologies, such drones. It shown can be adopted practice both prioritization at building-portfolio level building-specific level.