The repair work consisted of installing Cantsink Helical Piles with remedial underpinning brackets to stabilize and lift the settled concrete pads to an original level state. The pile used was a 2.5” schedule 40, pipe pile with load capacities of 60 Kips. A standard underpinning bracket by Cantsink was used. All materials installed were hot dipped galvanized in accordance with industry specifications. The piles were positioned at key load points to insure uniform lifting capabilities were achieved. Pile depths for the 1st pad location were all at 14 feet with only one pile requiring 17 feet to meet the minimum torque requirements. Pile depths for the 2nd and 3rd pad location ranged from 21’ to 28’. At pad #4, all piles were installed to 28’ in order to meet the torque requirements. Once the piles were properly founded, Cantsink remedial underpinning brackets were installed to transfer the bearing loads to the piling system. Hydraulic jacks (20 ton capacity) were placed on each piling system for lifting. Systematically, load was applied to each pile and the individual pads were raised to a level condition.

The photograph below depicts the work in progress with piles, brackets and jacks in place ready to lift the settled pads. The end results were characteristic of all pads – level equipment and level pre-cast concrete pads. The work was completed in 5 business days involving a 4 man crew for 3 days followed by an additional 2 men the other 2 days. Completion was made only days prior to Hurricane Matthew striking the North Carolina Coast, which resulted in flooding for most of the Eastern half of North Carolina.