Located in Manhattan’s Greenwich Village, One Jackson Square is a 35-unit luxury residential mixed-used development that responds in dramatic fashion to its celebrated locale. Formerly a surface parking lot, the split-zone 10,000-square-foot site above two subway tunnels posed significant challenges, combined with issues from the 6-sided glass facade.
Our team first surveyed the ground-borne noise and vibration levels at the site, with the A, C, E, and L subway lines directly below and subway stations nearby. Test revealed noise and vibration levels far beyond what is recommended by the Transit Noise and Vibration Impact Statement used for a project of this nature. We used the data collected to make recommendations for noise and vibration mitigation and isolated the entire building using elastomer pads similar to bridge bearing pads and natural rubber isolation bearings on a field test during construction to validate effectiveness.
During construction we observed mock-up of the soffit construction and reviewed the framing and gypsum construction as it progressed to ensure acoustical separation between floors. We also made recommendations for the plumbing connections and isolation of the domestic water piping from the slab structure. Finally we tested the demising partitions and mullions of sample apartments in the building to ensure privacy between apartment units.