Jacked piers are constructed using small-diameter steel pipes advanced to bearing depth by hydraulic jacks that are secured to the structure being underpinned. Hayward Baker applies this technique to underpin and level light structures.
- Underpin foundations
Using the structure as the reaction load, the jack hydraulic pressure required to advance the pile verifies the pile capacity. This method essentially load tests each pile. After reaching bearing depth, the tops of the pipes are bracketed to the structure’s footing.