National Geographic Society Building Upgrades

This project included a multi-phase approach which required our office to provide additional and careful coordination with all the disciplines including electrical, mechanical and plumbing. Our scope included concrete slab modifications due to live load change requirements and new slab openings for duct risers and penetrations. This required coordination and design of slab reinforcing both as structural steel and carbon fiber reinforcing polymer.

Our office also designed an extension to the penthouse area allowing for equipment to be installed behind a lightweight stone screen wall with structural steel framing.

An existing two-story auditorium was transformed into an expanded space that connected two floors with stadium seating on existing structural steel framing. This require extensive analysis of existing steel framing which resulted in additional bracing and reinforcing installed to the existing framing.

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Condition Assessment, Concrete Design, CFRP Design, Structural Steel Design, and Construction Administration


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1414 Prince Street, Suite 200, Alexandria VA 22314 (703)527-5003

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