The purpose of a foundation is to support and spread the weight of the structure that sits on top of it. A foundation can become damaged due to poor soil conditions, moisture and foliage. Foundation problems can lead to cracks in walls and tiles, bowed walls and sloping floors. It can even become difficult to open and shut windows and doors.
One solution to stabilizing foundations is the installation of helical piles, also referred to as screw piles. A helical pile is a steel shaft with blades attached in a spiral pattern, similar to a wood screw. The pile is attached at the foundation on one end, and screwed into the ground on the other. Not only do they stabilize a structure, they can also increase load bearing capacities in a retrofit.
For stabilizing foundations or retrofitting to increase load capacity, Helical Piles are installed at intervals around the perimeter at affected locations.
Independent of the structure, the piles are extended to depths which attain the installing torque correlated to the required load bearing capacity.
Special brackets are located where needed around the perimeter and secured to the concrete foundation.
A pile is then torqued into the soil and connected to each bracket. The brackets permit lifting by hydraulic jacks. Tightening the nuts on the vertical bolts of the bracket locks off the load.