4 Hudson Square (AKA Galaxy)

Project Name: Project Galaxy
Project Address: 310 Hudson Street, New York, NY 10013
Owner: The Walt Disney Company
Construction Manager/General Contractor: Lendlease Construction LMB Inc.
Geotechnical Engineer: Langan Engineering
Structural Engineer: Thornton Tomasetti, Inc.
Construction Dates (for our scope): Jan 2020 to May 2021 (substantial completion)

Major Technologies: Secant Piles / Concrete Mat Slab / Permanent Rock Anchors / Vibration Isolation System

Project Summary:

  • The project consists of a 19-story, 1.3 million sf commercial development situated on an 86,000 sf lot in Manhattan’s Hudson Square neighborhood.
  • CCJV’s scope consisted of support of excavation, earth and rock excavation, foundation concrete, and permanent rock anchors
  • CCJV’s subcontractor, Keller North America, drilled and installed an 1180mm diameter, secant wall socketed 5’ into rock around the 1,300 linear foot site perimeter
  • CCJV’s subcontractor, Keller North America, drilled and installed approximately 315ea tiebacks for support of excavation and 60ea permanent tie down anchors.
  • Excavated approximately 150,000 cy of soil and 5,000 cy of rock. Installed approximately 4,400 tons of rebar, 28,000 cy of foundation concrete and 18,000 cy of secant pile concrete.
  • Poured 4,305 cy in a single 11 hour pour. One of NYC’s largest concrete pours in history.
  • Dewatered the entire 2-acre site to 35 ft below natural ground water table
  • Furnished and installed 135,000 sf of GERB’s polyurethane structural vibration isolation system
  • Managed multiple subcontractors to efficiently and safely complete the project (on time or ahead of schedule)