Treasury Resilience Building is First USRC Platinum Building in Oregon
The Oregon State Treasury Department process more than $265 billion annually on behalf of state agencies including government employee pay and retirement checks as well as managing the state’s nutritional assistance program. The Treasury Department is critical in post-event disaster recovery. In addition to maintaining its day-to-day functions post-disaster, the Treasury Department is also responsible for immediately distributing Federal Emergency Management Agency (FEMA) funds.
As one component of their emergency plan which also includes employee training and IT systems, the Oregon State Treasury Department identified a need for a resilient building. This was particularly motivated by the hazard posed by the Cascadia Subduction Zone. An earthquake on the Cascadia Subduction Zone would significantly affect almost all of Oregon’s metropolitan centers and the majority of the state’s population. The Oregon State Treasury Department required that their new building achieve a USRC Platinum rating.
KPFF evaluated multiple schemes to achieve the desired resilience objectives and determined that seismic base isolation provided the best assurance of meeting the safety, damage, and recovery targets. The resulting building, known as the Treasury Resilience Building, is a 30,000, 2-story, steel-framed building located in Salem, Oregon. Seismic base isolation is realized through a combination of elastomeric and flat-sliding isolators, depending on column location, which dramatically reduces drift and acceleration demands on superstructure and nonstructural components.
The Treasury Resilience Building is the first USRC Platinum-rated building in Oregon and the first USRC-rated seismically isolated building in the United States. It not only achieves a USRC Platinum rating at the design-basis earthquake (as required by the USRC methodology) but also at the Risk-Targeted Maximum Considered Earthquake (MCER) as a result of the seismic isolation system.