The foundations of Alloy Block continue to advance on 100 Flatbush Avenue in downtown Brooklyn

Work is progressing below tier on 100 Flatbush Avenue, the site of a 44-story residential building in The Alloy Block in downtown Brooklyn. Designed and developed by Alloy Development, the 482-foot structure will be joined by a separate 840-foot-high skyscraper. The Urban Atelier Group is the contractor for the project, located on a trapezoidal lot connected to Flatbush Avenue to the northeast, State Street to the southwest and Third Avenue to the northwest.

A significant amount of progress has been made at the site since our last update in December, while the excavation is still ongoing. Now the foundations are beginning to rise, with large strips of faucet-arm tied towards a nearby concrete casting. At the current rate of construction, the works may reach street level by the summer.

100 Flatbush Avenue. Photo by Michael Young

100 Flatbush Avenue. Photo by Michael Young

100 Flatbush Avenue. Photo by Michael Young

100 Flatbush Avenue. Photo by Michael Young

100 Flatbush Avenue. Photo by Michael Young

100 Flatbush Avenue. Photo by Michael Young

100 Flatbush Avenue. Photo by Michael Young

100 Flatbush Avenue. Photo by Michael Young

100 Flatbush Avenue. Photo by Michael Young

100 Flatbush Avenue. Photo by Michael Young

100 Flatbush Avenue. Photo by Michael Young

100 Flatbush Avenue. Photo by Michael Young

100 Flatbush Avenue. Photo by Michael Young

100 Flatbush Avenue. Photo by Michael Young

100 Flatbush Avenue. Photo by Michael Young

The 100 Flatbush Avenue adaptations show the tower to the south, where its profile is reminiscent of the Flatiron building with its pointed block at the intersection of Flatbush Avenue and State Street. A number of spacious shallow falls along the height of the building, covered with a uniform fa├žade of glass from floor to ceiling and dark vertical columns. On the ground floor there will be commercial areas with a 350-foot front facing Flatbush Avenue.

The alloy block. Seen on The Alloy Block’s main site

100 Flatbush Avenue is set to become New York’s first electric tower, with all of the building’s functions powered by electricity. This includes the use of induction hobs, heat pump dryers, hot water and HVAC. The houses will be spread out from the third floor to the 41st floor, with most of the toilets inside the stand. These include a fitness center, a flexible work area and an outdoor rooftop swimming pool. YIMBY recently announced that Alloy Development is removing 100,000 square feet of commercial office space and will replace them with an additional 184 apartments, bringing the revised inventory to 441. Forty-five housing units, or about ten percent, are marked as reasonable homes.

The alloy block. Seen on The Alloy Block’s main site

The taller brother in the alloy block will be built in partnership with the New York Educational Building Foundation with the first two schools of a passive house in New York City, Khalil Gibran International High School (KGIA) and a 500-seat elementary school. The following are some adaptations that emphasize the overall location of the alloy block and the height of each tower. A recent iteration for 80 Flatbush Avenue has yet to be revealed.

Early processing of The Alloy Block. Processing by alloy development

The alloy block.

The alloy block.

The alloy block.

The Office of Architecture Research is the design architect, Ismal Leiba Architects serves as the record architect, Silman Associates and Magnus Kalmanitz is the structural engineer, Consentini & Associates is the MEP engineer, Front Inc. He is the front consultant, Nelson Byrd Waltz is the landscape architect, Thorton Thomasetti is the sustainability consultant, Lighting Workshop is the lighting consultant, Langan is the geotechnical engineer, and AKRF is the civil engineer of 80 Flatbush Avenue. The KGIA at 380 Schrammerhorn Street is proposed to yield a new cafeteria, gymnasium and library. The elementary school is located at 489 State Street and will have its own gym and auditorium that is also accessible to the community.

Khalil Gibran International Academic High School. Seen on The Alloy Block’s main site

100 Flatbush Avenue and the two schools are expected to be completed in the first half of 2024, while the construction of the second skyscraper is expected to take three years and may be fully realized by 2027.

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