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180 East 88th Street

New York, NY

The tower portion of this high-end residential building is now the tallest building on the Upper East Side above 72nd Street. It measures approximately 100 feet in the east-west direction and 40 feet in the north-south direction. It has 30 levels above grade, including setbacks at the upper two floors, and one below-grade.

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Architecturally exposed arches at the 14th and 30th floors are part of the lateral and gravity systems, stiffening the building and reducing the swaying inherent to structures of this height. There is also a tuned liquid sloshing damper at the roof to help control the acceleration from that swaying that could otherwise cause discomfort for residents at the upper stories.

Architecturally exposed arches at the 14th and 30th floors are part of the lateral and gravity systems, stiffening the building and reducing the swaying inherent to structures of this height. There is also a tuned liquid sloshing damper at the roof to help control the acceleration from that swaying that could otherwise cause discomfort for residents at the upper stories.

Starting at the eighth floor, the building cantilevers approximately 10 feet over the adjacent southern property. Silman resolved this challenge with sloped columns and reinforcing floor slabs at transfer stories, in addition to substantial amounts of steel in the north core wall to resolve tension from overturning due to gravity, with the wall tied directly into the ground with massive rock anchors.

This project has a goal of LEED Silver certification.

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