PROJECT OVERVIEW

806 9th Avenue, Manhattan

Complex Support of Excavation In Midtown Manhattan

GEODesign provided support of excavation design and construction support services for a new building project that will contain affordable residential units and MTA offices. Construction of the SOE system, which included soldier piles, tiebacks, internal bracing, and underpinning, was made complicated due to various existing underground conditions at the site.

806 9th Avenue, Manhattan

GEODesign was retained to design and provide construction support services for the temporary Support of Excavation (SOE) for a 17-foot-deep excavation in Midtown Manhattan. The new 9-story building contains offices for the New York City Transit Authority (MTA) and over 100 affordable housing units. Various adjacent buildings, including one owned by the MTA, and unanticipated underground site conditions required close coordination between GEODesign and the rest of the design team throughout the design and construction phases of the project.

The Solutions Unearthed

GEODesign worked closely with the contractor to address unanticipated underground conditions that were encountered during the excavation phase. This involved performing site visits, preparing sketches, updating the SOE drawings, and obtaining agency approvals with short turnaround times to keep the project moving.

Client: Hudson Companies

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