Building #1029 Philadelphia Navy Yard

Mechanical Equipment slab required a deep foundation due to extremely poor soil conditions.

Project Summary:

  • Helical Pile Type: SS1.5″ Grouted Helical Micropile
  • # of Helical Piles: 108
  • Location: Philadelphia, PA
  • Installation Depth: 60′
  • Equipment Used: 312 W/20,000 ft lb drive head
  • Challenge/Unique Aspect: Equipment pad was close to an adjoining warehouse, so no vibration piles were required. High mobilization cost for timber piles also impacted the decision to use helicals.
  • Engineer/Architect: NAVSUP Engineering Department
  • General Contractor: Whiting Turner