An underground oil tank was buried in front of a building in a business park. The tank had rotted away over time and was leaching oil into the ground. The tank had to be removed and the polluted soil remediated. Helical piles were chosen as the least intrusive method to support the building while the tank and contaminated soil were excavated and removed.
Project Summary:
- Helical Pile Type: 1.5″ Square Shaft- Transitioned to 2875.203 wall Pipe Pile
- # of Helical Piles: 6
- Location: Englewood, NJ
- Installation Depth: 15′
- Ultimate Pile Capacity: 30 kips
- Equipment Used: JCB Excavator, Digital Torque Indicator
- Challenge/Unique Aspect: An added benefit from using helical piles is that the building is now supported on a deep foundation with no concerns for settlement regardless of how well the new soil was compacted.
- Danbro Installer/General Contractor: Northstar Environmental
- Engineer: Endicott Engineering
