Risk assessment reveals high earthquake risk in over half of evaluated hospital buildings, highlighting urgent targets for structural retrofitting.
Key Points
To establish a composite seismic risk index for prioritizing structural retrofits across essential hospital buildings by integrating physical vulnerability, ground-shaking hazards, and operational value.
Assessed N=21 essential hospital buildings at the Ilocos Training and Regional Medical Center in Philippine seismic zone 4.
Formulated a composite Seismic Risk Index (SRI) combining FEMA P-154-based Rapid Visual Screening (RVS), point-source Probabilistic Seismic Hazard Analysis (PSHA), and multidimensional operational asset valuation.
PSHA established a site peak ground acceleration (PGA) of 0.34g (high-hazard category), with building RVS scores spanning 1.32 to 1.56 and asset value indices spanning 1.69 to 8.09.
Composite SRI classified 52.38% (11/21) of buildings as high-risk, 23.81% (5/21) as moderate-risk, and 23.81% (5/21) as low-risk.
The Pediatric Ward (B-020) and the Emergency Room (B-008) were ranked as the highest priorities for detailed structural evaluation and seismic retrofitting.