A deep foundation element was required for an addition to a row home in Brooklyn, New York. The addition was in the rear of an existing structure, and it was impossible to get a drill rig or virtually any equipment back there. Vibratory concerns were also a major factor. The structural engineer recommended helical piles because of the vibration-free installation as well the fact that there is specialized small equipment for areas of limited access.
Project Summary:
- Helical Pile Type: 1.5″ Square Shaft with a five-inch grout column
- # Helical Piles: 6
- Location: Brooklyn, NY
- Installation Depth: 20-25 Feet
- Ultimate Pile Capacity: 28 Kips
- Equipment Used: Portable Handheld Equipment
- Challenge/Unique Aspect: Persi Contracting was faced with a near impossible task. Access was a major challenge for equipment as well as the material. Both had to be transported through the house, piece by piece, to access the back of the row home. The piles had to be installed utilizing a potable, hand-held installation set-up. A walk behind skid loader was staged out front and provided the power source with two 100-foot hydraulic hoses that were run through the house to connect to the drive head. All six piles were installed in one day, a marvel of mobilization, access, production and professionalism.
- General Contractor: Persi Contracting Corp.
