An oil tank buried under the property had long since rusted out spilling the contents into the ground. The depth of the spill required an extraordinarily deep excavation to remediate and replace the contaminated soil. Helicals were used to support the structure and used in tension for sheeting and shoring which was required due to the extraordinary depth of the excavation.
Project Summary:
- Helical Pile Type: 5.5″ Pipe Piles grout filled (compression) 1 1/2″ Square Shaft (Tension)
- Location: Cherry Hill, NJ
- Helix Plates/Ultimate Pile Capacity: 15 Tons
- Equipment Used: 312 Excavator (soil remediation) Kuboto 121 (tiebacks & perimeter foundation piles) Dingo( Piles under the House)
- Challenge/Unique Aspect: Every aspect of this remediation project; mobilization, access, deepth of excavation, presented extreme and unique challanges.The borings for the delineation survey indicated a soft silt clay and instead of a typical spread-out, umbrella like contaminated zone, the oil stayed within the footprint of the structure and went very deep. This prompted a very deep excavation which in turn required sheeting and shoring in the deep pit in addition to the normal underpinning piles supporting the house in compression.
- Danbro Installer: RE ECO Drill LLC
- Engineer/Architect: Kluk Consultants
- General Contractor: CFS
