The single-story structure, constructed in 1966 with wings added in 1969, comprises steel framing and concrete masonry walls with a brick facade. For the modernization, the project team employed sustainable strategies as part of a design that is also commiserate with the existing character of the building.
To create a more desirable working environment, the project included initiatives for harvesting daylight and providing landscape views with a sky-lit winter garden, open-air summer garden, and a large, glass-clad entry lobby with a conical skylight. The team developed the design under LEED NC guidelines and incorporated building commissioning as defined by GSA facilities standards.
Highlights of SGH's structural work include the following:
- Evaluation of the existing lateral-load-resisting system and design of structural strengthening and retrofit details
- Design of a blast-resistant, reinforced concrete, package-processing structure within the existing structure
- Design of steel framing for a new, complex entry and lobby structure, which features a 60 ft clear span to accommodate new skylights
- Design of structural modifications and strengthening of existing steel framing to accommodate new roof openings and skylights, including a large, crescent-shaped roof opening over the summer garden set within the footprint of the building