Construction has begun on the fourth tier of JPMorgan Chase‘s 1,388-foot supertall headquarters at 270 Park Avenue in Midtown East. Designed by Lord Norman Foster of Foster + Partners with Adamsom Associates as the architect of record and developed by Tishman Speyer, the 60-story skyscraper will yield 2.5 million square feet of office space with a capacity of 15,000 employees, and will become the tallest structure in New York completely powered by hydroelectric energy. AECOM Tishman is the general contractor for the full-block property, which is bound by East 48th Street to the north, East 47th Street to the south, Park Avenue to the east, and Madison Avenue to the west.
Recent photographs show another handful of floors added to the steel superstructure since our last update in mid-July, when crews were on the precipice of crossing the 984-foot supertall threshold. Now, construction is beginning on the fourth and penultimate tier of the stepped massing. These final two tiers make up the crown, which is shown illuminated at night in the main rendering.
The sleek tripled-glazed windows and metallic bronze paneling has steadily continued installation and now encloses the building above the first setback to the second set of mechanical floors. This is indicated by the presence of ventilation slits in the glass.
Façade installation has progressed the furthest on the northern elevation.
More of the bronze paneling now covers the signature diagrid pattern on the eastern and western faces along Madison and Park Avenues.
Work is also progressing on the inward-sloping base, which features a set of colossal columns that fan out from various steel nodes. New additions include a framework of black metal mullions for the glass paneling, and the framework for the main entrance canopy along Park Avenue.
YIMBY also spotted the arrival and hoisting of the first of four BMUs last Sunday. The system is being supplied by R&R Scaffolding Ltd., which is owned by Leila and Giovanni Savinovich, and has provided equipment for at least 80 percent of new skyscraper construction in New York City. Photographs show multiple truck beds parked along East 48th Street as the tower crane carefully lifted the numerous segments of the window washing apparatus high above Midtown East and onto the 38th floor of the tower.
The pieces of the BMU include a four-legged base, the center mast, a winch and elevator drum box, counterweights, and the long telescopic arm that will hold the metal basket for workers to stand in while cleaning. Two BMUs will be located on the eastern and western setbacks of the 38th floor, another will travel north and south on rails on the 58th floor, and the final unit will be placed on the topmost roof parapet. Able Rigging and Dublin Iron Works also participated in the lifting process, while Chrisopher Baquero from R&R Scaffolding Ltd. served as the permanent installation supervisor.
Other team members of the project involved in 270 Park Avenue include JB&B as the MEP engineer; Banker Steel providing the steelwork; NYC Constructors as the steel subcontractor; Mueser Rutledge Consulting Engineers (MRCE), which designed the structural foundation elements; Severud Associates as the engineer of record; and New Hudson Façades supplying the curtain wall.
270 Park Avenue is anticipated to be completed sometime in 2025. YIMBY estimates the topping out to occur before the end of this year.