Washington, DC
St. Elizabeths, Building 54
Scope/Solutions
The U.S. General Services Administration (GSA) repurposed many of the original St. Elizabeths structures for the Department of Homeland Security headquarters. In addition, the GSA undertook a project to construct a new building on the former hospital’s west campus to house office and administrative spaces. In addition to a new building with three above-grade stories and one-below grade level, the project includes a three-story glass-clad structure connecting Building 54 to the Center Building and several buried tunnels connecting the building to other campus structures. Working with the design-build team of Grunley Construction Company and Shalom Baranes Associates, SGH consulted on the building enclosure for the project.
SGH consulted on the design and construction of the building enclosure, including below-grade waterproofing for the building and its tunnels, curtain walls, and roofing. Highlights of our work include:
- Reviewed the building enclosure design for airtightness, watertightness, thermal performance, condensation resistance, and constructability
- Helped develop performance criteria for roofing, cladding, waterproofing, and curtain walls, and evaluated material and system options
- Consulted on glass curtain walls and exterior wall assemblies with terra cotta panels and sections of brick veneer at grade
- Assisted with the design for low-sloped roofing, including vegetative roofing and exposed membrane roofing with photovoltaic panels
- Helped develop details for the various enclosure assemblies, their transitions, and the intersections between the new building and existing structures
- Provided support during the design and installation of tunnel waterproofing and below-grade expansion joints
- Provided construction phase services, including reviewing enclosure submittals, visiting the site to observe ongoing work, and helping address field conditions
Project Summary
2019
45M
100K
Key team members
