363,000-square-foot service facility in Carson City, Nev. Submitted by Degenkolb Engineers of San Diego. Other TCA member involvement: Tedesco Construction.
This is the first concrete hospital/ health care facility of its size to use tilt-up panels for the primary lateral force-resisting system. Since the project was located in a high seismic region, the engineers worked with the contractor to design custom-welded hold-down details that are capable of transmitting the high shear and overturning forces as well as allow for the necessary erection tolerances. The panels for this project received ranking on the TCA Top 10 List (largest panel at 2742 square feet, third heaviest at 292,000 pounds, and fifth tallest at 83 feet 2 inches). The design incorporated threaded bar connections at the bottom of panels and embed plates that were welded to embed plates in the foundations. These design elements allowed the contractor to safely set the large panels with reasonable erection tolerances and still transfer the large seismic forces into the foundation creating a seismically safe, cost-effective structure.
The tilt-up panels are located in the interior of the building, at the back wall of the lobby, and a glass curtain wall in a saw-tooth pattern defines the front of the structure. The façade is primarily painted concrete walls with various elements that incorporate a stone veneer. This project received recognition from the Structural Engineering Association of California for Best Use of Conventional Technology in New Construction, a Certificate of Merit from Healthcare Design magazine, and the 2006 ACI Construction Award from the Northern California/Western Nevada Chapter.