Facilities Seismic Study

In the summer of 2009, the District hired KPFF Consulting Engineers (KPFF) to conduct a seismic study of PPS school buildings. KPFF examined twelve school campuses as a representative sample of building construction types. KPFF developed the preliminary designs using American Society of Civil Engineers (ASCE) 31-03 for evaluation and ASCE 41-06 for seismic rehabilitation scheme.  These rehabilitation design schemes would bring PPS school buildings to current code.  Approximate costs were determined for two options:  1.)  the seismic retrofit, plus removal and replacement of finishes, and 2.) for the cost of the seismic work as part of a larger renovation.  Probable cost for construction estimates were extrapolated across all schools.

KPFF evaluated 12 representative buildings to:

• Identify seismic deficiencies.
• Develop preliminary rehabilitation options.
• Develop probable cost for construction cost estimates for these options on a per-square-foot basis.

Seismic Study sections listed below:

• Executive Summary
• Introduction and Scope
• Current Study Conclusions and Costs
• Current Seismic Studies and Philosophy
• Comparison of Previous Work with Current Approach
• Previous Seismic Studies and Philosophy
  • Code and Project History Summary
  • Seismic Upgrade Philosophy
  • Seismic Hazard Ranking Summary
  • Approximate Costs
• Previous Seismic Rehabilitation Work
• Conclusions and Recommendations
• Appendix
  • Scope of Work
  • Approximate Cost Data for 12 Studied Facilities
  • Approximate Cost Data Extrapolated for All Facilities
  • Geotechnical Seismic Hazard Evaluation
  • (Chapter 24.85)City of Portland Design Requirements for Existing Buildings

In most cases, seismic rehabilitation work for PPS facilities is done on a voluntary basis. Exceptions may occur when a building permit for construction changes the occupancy, adds square footage, or alters or repairs a building. This seismic study updated the facilities condition index (FCI).

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