NYA served as Structural Engineer of Record for the UC Irvine Douglas Hospital, a 475,000-square-foot hospital tower consisting of seven stories above grade and one full basement level. The project includes a 92-foot-tall 1A Link elevator tower supporting a 45-foot cantilevered corridor that connects adjacent hospital structures. A four-story, glass-enclosed bridge spans between the two halves of the tower above the third floor and incorporates a seismic joint at the west end.

The primary lateral force-resisting system utilizes steel Special Concentrically Braced Frames (SCBF), while the 1A Link structure incorporates reinforced concrete shear walls. The 1A Link tower is seismically independent from the adjacent buildings and is supported on cast-in-place drilled piles due to its limited footprint. The foundation system consists of a reinforced concrete mat foundation ranging from 4 to 7 feet thick, designed in accordance with the California Building Code and OSHPD requirements. Additional analytical models were developed to evaluate the interaction between the basement walls and the braced frame system extending into the mat foundation.

Delivered through a design-build process, the OSHPD-regulated project required early and ongoing coordination among the design team, contractor, and subcontractors to produce a fully permitted construction document set without deferred approvals. The project stands as an example of structural engineering excellence in the delivery of complex healthcare facilities.

Structural Engineering Services: Structural Engineer of Record, steel Special Concentrically Braced Frames (SCBF), reinforced concrete shear walls, mat foundation design, drilled pile foundations, OSHPD healthcare facility structural engineering.

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