256 North 9th Street Helical Installation


Date: 9/1/2019


30 Helical piles were installed and pile caps poured to support an elevator shaft. Weak soils in the Williamsburg section of Brooklyn required a deep foundation to carry these loads.

Project Summary:

  • Helical Pile Type: RS4500.337
  • # of Helical Piles: 30
  • Location: Willliamsburg, NY
  • Installation Depth: 65′ to 85′
  • Ultimate Pile Capacity: 120 kips
  • Equipment Used: Komatsu PC138, Digital Torque Indicator
  • Challenge/Unique Aspect: The entire site was wide open so the contractor was able to bring in a large machine and use longer extensions. This speeded the installation as fewer, longer extensions ment less time was required to stop and bolt the connections.