Northeast Foundation and Concrete performed conventional concrete underpinning on a large building in Mount Joy, Pennsylvania. Due to the exposed depth of the underpinning pits, the design engineer recommended helical tiebacks throughout the underpinning pit to help retain it laterally before proceeding with the underpinning.
Project Summary:
- Helical Pile Type: 1.5″ Square Shaft 8″ 10″ Helical Configuration
- # of Helical Piles: 16
- Location: Mount Joy, PA
- Installation Depth: 25′
- Ultimate Pile Capacity: 20 kips
- Equipment Used: Mini Excavator, Drive Head, Marian Torque Indicator
- Challenge/Unique Aspect: Northeast Foundation and Concrete utilized the same excavator to dig out the underpinning pit and install the tiebacks by simply disconnecting the bucket and switching to the hydraulic drive head to install the tiebacks. This thoughtful approach eliminated extra machines, equipment, and mobilizations. This helped saved the General Contractor and owner, time and money.
- Engineer/Architect: Peirce Engineering, Inc.
- Installing Contractor: Northeast Foundation and Concrete, Inc.
