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District releases seismic risk rankings for 92 campuses; board to consider prioritization approach in facilities committee
Summary
Portland Public Schools released a district‑wide seismic risk ranking for 92 campuses Sept. 9 and asked the Facilities Improvement and Oversight Committee to recommend whether to prioritize comprehensive retrofits at the highest‑risk schools, targeted repairs to the worst building parts, or a hybrid approach.
Portland Public Schools staff and consultants presented the results of a district‑wide seismic risk assessment at the Sept. 9 meeting. The district commissioned a structural assessment of 92 campuses covering roughly 410 building parts. The consultant provided a numerical risk score (0–10) for each building part and recommended three broad ways to prioritize work: comprehensive retrofits at the highest‑risk campuses, targeted retrofits of the highest‑risk building parts so work can reach more sites, or a hybrid strategy that combines those approaches and seeks state seismic rehabilitation grants when feasible.
Consultant findings and method: The engineering firm used FEMA/Hazus baseline metrics and adjusted scores for building construction type, age, previous retrofits and occupancy to produce a district risk ranking. The consultant presented a scatterplot showing higher risks associated with older concrete and unreinforced masonry buildings and lower scores for modern wood‑frame construction.
Board discussion and next steps: Board members raised the need to link prioritization to rightsizing decisions, enrollment trends, emergency‑response planning and community resilience. Staff proposed an internal evaluation that would consider implementation feasibility, construction sequencing to avoid program disruption (including summer schedule constraints), grant opportunities and potential resiliency benefits. The district will discuss the options in the Facilities Improvement and Oversight Committee, pursue grant opportunities (including the state SRGP seismic rehabilitation grant) where appropriate, and start permitting and design work for projects selected for near‑term action.
Public input and technical questions: Members of Safe Structures and other commenters asked technical questions about what a given risk score meant in terms of expected building damage or life‑safety risk, and the consultant said higher scores indicate greater seismic vulnerability but that site‑specific geotechnical data and more detailed geotechnical or structural investigations are required to refine life‑safety projections. The consultant said prior seismic upgrades were factored into adjusted scores.
Decision: The board directed staff to take the risk results to the Facilities Improvement and Oversight Committee for a prioritization discussion and to return with recommended sites and grant strategies; staff said it could begin SRGP grant planning and pre‑application coordination with city bureaus while the prioritization work proceeds.
