Brooklyn Build it Back (Plum Beach Channel)

A house in Brooklyn, NY (Gerritsen Beach), was near Plumb Beach Channel, a large body of water that leads into the Dead Horse Bay. It qualified for New York City’s Build It Back program and needed to be raised to meet the new FEMA base flood elevation. Timber piles were not an option to support this house lift as the structure could not be relocated off site. There was only enough room to lift the property straight up. The new foundation was supported on helical piles installed beneath the structure raised on cribbing.

Project Summary:

  • Helical Pile Type: 1 1/2″ Square Shaft
  • # of Helical Piles: 24
  • Location: Brooklyn, NY
  • Installation Depth: 47′
  • Equipment Used: Caterpillar 303 Mini Excavator w/6K drivehead and a digital torque indicator
  • Challenge/Unique Aspect: The soil profile indicated low blow count material in addition to an urban fill layer.
  • Engineer/Architect: AECOM
  • General Contractor: Navesink Prestige