“House Leveling 101”

How the Drilled Pier Process Works

1 The first phase you will see will be the “site preparation.” Our workers will lay down plastic or plywood to protect your yard. Then we will move any plants from the work area, next to your foundation, where piers will be installed, unless you have already taken care of this before we arrive. Typically the shrubs and/or plants are temporarily transplanted into the soil near the excavated area. We will break through concrete, or any other paved surfaces (sidewalks, driveways, patio areas), and dig access holes that are approximately 3ft wide x 3ft long x 3ft deep below your home’s beam. These holes are about the size of a common door mat.

2 The next operation begins with the of installation of piers. Piers will be drilled at a slight angle between a depth of 4 to 20 feet total depth (Depth of pier includes excavation from soil surface/top of ground to bottom of grade beam/slab) depending on soil conditions; rock or bit refusal, and/or contractor’s discretion. Piers will be 12 inches in diameter, and have a 24-inch bell to form the footings. Each pier will contain four each: #4 rebar steel placed vertically with 3 strips. (Piers will be as close as possible to the attached pier diagram.)All piers will contain 3,000 PSI concrete, with a 3-inch slump. If adverse soil conditions should occur, or any type of obstructions, we will have to dig large holes for the spread footings.

3 The next step is the “raising of the foundation. We raise the low parts of the foundation (in areas where the piers are installed) to as near their original elevations as possible. Hydraulic jacks are placed next to a pier. An experienced advanced technician directs the raising while carefully monitoring the reactions of the structure. When the raising is complete, steel shims are inserted between the beam and the piers to support the home/structure. After raising the foundation, the final step is the cleanup. Each hole is then back filled with soil, and concrete break-outs are then patched.

4 Plants and/or shrubs are replanted, and your yard, sidewalks and driveways are cleaned.

 

 

Block and Pad Pier DiagramUnipile Pier Diagram