The architectural and engineering teams behind the renovation of 600 Fifth Street in Washington, D.C., updated a concrete-framed 1970s Brutalist building with a concrete frame into a modern corporate headquarters, and steel additions were at the center of the design.

Architects Pickard Chilton and Kendall/Heaton Associates, alongside structural engineer Thornton Tomasetti, were charged with delivering a modern, trophy-class building with 400,000 sq. ft of cutting-edge office space and 20,000 sq. ft of ground-floor retail. 

Read more at Modern Steel Construction