Flood fragility and vulnerability functions for residential buildings in the Province of Leyte, Philippines
Abstract The Philippines experiences frequent flooding, but, despite expansive tools for risk reduction, there remain gaps in understanding generalised relationships between flood events and damage to residential structures for regions outside the nation's capital. This gap has limited the abil...
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| Format: | Article |
| Language: | English |
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Wiley
2025-03-01
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| Series: | Journal of Flood Risk Management |
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| Online Access: | https://doi.org/10.1111/jfr3.13043 |
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| author | Isaac Besarra Aaron Opdyke Diocel Harold Aquino Joy Santiago Jerico E. Mendoza Alfredo Mahar Francisco A. Lagmay |
| author_facet | Isaac Besarra Aaron Opdyke Diocel Harold Aquino Joy Santiago Jerico E. Mendoza Alfredo Mahar Francisco A. Lagmay |
| author_sort | Isaac Besarra |
| collection | DOAJ |
| description | Abstract The Philippines experiences frequent flooding, but, despite expansive tools for risk reduction, there remain gaps in understanding generalised relationships between flood events and damage to residential structures for regions outside the nation's capital. This gap has limited the ability to model flood risk and damage without robust functions to link hazards and housing vulnerability. This research draws on 394 household surveys to empirically derive a suite of flood fragility and vulnerability functions for residential structures in the Province of Leyte for light material, elevated light material and masonry structures. The results showed that masonry construction was more resilient to floods compared to light material counterparts. Elevated light material structures also exhibited lower damages at low inundations but tend to fail abruptly at flood depths greater than 3 m. By empirically deriving flood damage functions, the findings contribute to a more localised approach to quantifying housing vulnerability and risk that can be used for catastrophe and risk modelling, with applications for government agencies, the insurance industry and disaster risk researchers. This research lays the foundation for future flood risk mapping with growing significance under climate change. |
| format | Article |
| id | doaj-art-4187b937179b4aafad2e62cfc8f1c47b |
| institution | OA Journals |
| issn | 1753-318X |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Flood Risk Management |
| spelling | doaj-art-4187b937179b4aafad2e62cfc8f1c47b2025-08-20T02:10:27ZengWileyJournal of Flood Risk Management1753-318X2025-03-01181n/an/a10.1111/jfr3.13043Flood fragility and vulnerability functions for residential buildings in the Province of Leyte, PhilippinesIsaac Besarra0Aaron Opdyke1Diocel Harold Aquino2Joy Santiago3Jerico E. Mendoza4Alfredo Mahar Francisco A. Lagmay5School of Civil Engineering The University of Sydney Sydney NSW AustraliaSchool of Civil Engineering The University of Sydney Sydney NSW AustraliaInstitute of Civil Engineering University of the Philippines Quezon City PhilippinesUniversity of the Philippines Resilience Institute Quezon City PhilippinesUniversity of the Philippines Resilience Institute Quezon City PhilippinesUniversity of the Philippines Resilience Institute Quezon City PhilippinesAbstract The Philippines experiences frequent flooding, but, despite expansive tools for risk reduction, there remain gaps in understanding generalised relationships between flood events and damage to residential structures for regions outside the nation's capital. This gap has limited the ability to model flood risk and damage without robust functions to link hazards and housing vulnerability. This research draws on 394 household surveys to empirically derive a suite of flood fragility and vulnerability functions for residential structures in the Province of Leyte for light material, elevated light material and masonry structures. The results showed that masonry construction was more resilient to floods compared to light material counterparts. Elevated light material structures also exhibited lower damages at low inundations but tend to fail abruptly at flood depths greater than 3 m. By empirically deriving flood damage functions, the findings contribute to a more localised approach to quantifying housing vulnerability and risk that can be used for catastrophe and risk modelling, with applications for government agencies, the insurance industry and disaster risk researchers. This research lays the foundation for future flood risk mapping with growing significance under climate change.https://doi.org/10.1111/jfr3.13043climate resiliencedisaster risk reductionempirical analysisflood riskstructural damage assessment |
| spellingShingle | Isaac Besarra Aaron Opdyke Diocel Harold Aquino Joy Santiago Jerico E. Mendoza Alfredo Mahar Francisco A. Lagmay Flood fragility and vulnerability functions for residential buildings in the Province of Leyte, Philippines Journal of Flood Risk Management climate resilience disaster risk reduction empirical analysis flood risk structural damage assessment |
| title | Flood fragility and vulnerability functions for residential buildings in the Province of Leyte, Philippines |
| title_full | Flood fragility and vulnerability functions for residential buildings in the Province of Leyte, Philippines |
| title_fullStr | Flood fragility and vulnerability functions for residential buildings in the Province of Leyte, Philippines |
| title_full_unstemmed | Flood fragility and vulnerability functions for residential buildings in the Province of Leyte, Philippines |
| title_short | Flood fragility and vulnerability functions for residential buildings in the Province of Leyte, Philippines |
| title_sort | flood fragility and vulnerability functions for residential buildings in the province of leyte philippines |
| topic | climate resilience disaster risk reduction empirical analysis flood risk structural damage assessment |
| url | https://doi.org/10.1111/jfr3.13043 |
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