NCSEA, Excellence in Structural Engineering Awards, 2015
ASCE, Project of the Year, National Capital Section, 2015
ENR Mid-Atlantic, Best Projects, Residential / Hospitality, 2014
Washington Building Congress, Craftsmanship Award, Cast-in-Place Concrete and Sitework, 2014
SEAMW, Excellence in Structural Engineering, 2014
NAIOP Maryland / DC, Award of Excellence, 2014
ACI, Award of Excellence, Merit Award, 2014
Building on a tight site with top-down construction
The largest hotel in Washington D.C., the Marriott Marquis is a 15-story high rise surrounding an atrium lobby, ground-floor retail and restaurants, a 5,200 square-foot outdoor event terrace and a two-story fitness center. Seven below-grade levels house 105,000 square feet of event space, including three double-height ballrooms, mechanical and back-of-house areas, and parking for 400 cars. The hotel also integrates a renovated historic building.
- To fit the hotel’s 1.1-million-square-foot program on a tight 100,000-square-foot site and within Washington’s strict height limits required the use of top-down construction.
- The design called for extending the construction 100 feet below grade, which is deeper than any other building in the city.
- While the building is primarily framed with concrete, its seven below-grade levels rely on more than 5,100 tons of structural steel to facilitate its top-down construction method.
- The superstructure construction began while basement levels were still being excavated.