NEW YORK, NY
550 Washington Redevelopment
550 Washington was constructed in the 1930s as St. John’s Terminal, the depot for the tracks that are today’s High Line.
The building’s redevelopment will create a new high-performance, health and wellness commercial office building, serving as the new NYC headquarters for a well-known tech company, and described as a workplace of the future.
The building’s green rooftops and recessed terraces will offer views of the Hudson and New York City skyline. The site and building are located in the AE Flood Zone.
The design of the precast core focused on maximizing unit sizes, made possible by the availability of large cranes. Benefits included reducing onsite welding, maximizing the use of repeatable forming systems, and providing an opportunity for the walls to be exposed as part of the interior architecture. The innovation is expected to tighten tolerances, speed onsite construction, and create a safer working environment.
The building is a nine-level overbuild on the previous four-level St. John’s Terminal building (12-story plus penthouse in total). The 1.3 million ft² building is designed as a single-tenant leased office building clad in curtain wall and modified as required by the tenant’s requirements. For the new corporate headquarters, we worked with the client and trade contractors to develop precast post-tensioned concrete cores.
PROJECT HIGHLIGHTS
CLIENT
Oxford Properties;
Turner Construction
ARCHITECT
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OUR ROLE(S)
Structural Engineering Consultant;
Temporary Works Peer & Site Review;
Special Inspections
SIZE
102,193 m² (1,300,000 ft²)
BUDGET
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MARKET (OFFICE)
NEW YORK
KEY CONSIDERATIONS
Challenge One
The construction of 550 Washington includes demolition, building relocation, major renovation, and new construction over a site with a three-block footprint and a bridge over an active roadway. Coordinating all the temporary works to enable construction and protect the public is critical to the safe and successful logistics of the project.
Solution One
Turner Construction hired Entuitive to act as a peer reviewer for all temporary works required by the contractor. Entuitive reviewed all the temporary workshop drawings and calculations for errors, omissions, or value engineering possibilities. Entuitive also conducted site reviews to ensure that all temporary works were constructed following the design documents.
GALLERY
