Gorden House Leveling and Foundation Repair, Inc.
1-866-351-8876

"Start with a SOLID Foundation" - Slab Preparation

Phase 1

Site Preparation
First, we carefully remove and relocate any shrubs, plants and other vegetation in work areas. Tarps and plywood are placed around these areas to protect the surrounding grass.

Excavation
Next, access holes are created by hand where pier locations have been determined. If concrete exists in these locations, we must break through these surfaces to create the access holes. The widths of the holes are approximately the size of a common doormat and extend below the surface three to four feet. For your safety, we wheelbarrow the excavated dirt to a protected area of the lawn. Heavy plywood covers are placed over access holes daily.

Pier Installation
Then, we begin driving the concrete pilings into the ground using a small, quiet hydraulic ram. The first piling in each hole is vertically aligned under the home’s grade beam, which extends around the perimeter of the home. Using the weight of the home and the grade beam as a backstop, the ram drives additional concrete pilings further into the ground. This process is repeated until refusal occurs, which is usually about 21 to 2 tons, or three times the given weight of the home at the location.

Phase 2

Leveling
Once each pier has been driven, individual manual hydraulic jacks will be placed upon each pier cap and used to level the home. This process begins with the lowest portion of the home. The lead technician monitors both the reaction of the structure and the interior elevation readings through the leveling. Teams move around the house systematically, following the direction of the lead technician, to create a gentle and uniform lift.

Securing
Once the home is level, or as near the original elevation as possible, we remove one of the hydraulic jacks and replace it with a concrete cylinder. Any nominal space left between the pier and the exterior grade beam is procured with steel spacers. We then remove the second jack and repeat the process until all piers are secured against the exterior grade beam surrounding the home.

Phase 3

Backfill
The dirt previously removed is then returned to the holes from which it was excavated. Any surface concrete breakthroughs are filled and patched.

Cleaning
We then return trees, shrubs and other vegetation to their original position and take away all material, dirt and debris.
 

Pier and Beam Preparation

Phase 1

Site Preparation
First, we carefully remove and relocate any shrubs, plants or other vegetation in work areas. Tarps and plywood are placed around these areas to protect the surrounding grass. If clearance beneath the home is inadequate to perform work, excavation by hand may be required. In some instances, this can mean removing the skirting around the home’s perimeter.

Phase 2

Shoring
Concrete blocks are placed beneath the home’s beams to temporarily shore the structure. Once the home is shored, existing piers are removed. A hole is dug 24” below grade where new pier locations have been determined. This footing, or pad, is 24” x 24”. Rebar is tied together inside this footing and concrete is poured to a height of 12”. This leaves only exposed rebar in the center for sonotube installation after it has had sufficient time to cure. This usually takes 48 hours. The replacement of any existing beam or additional wood takes place during this time.

Leveling
If necessary, concrete blocks are used atop these footings to accommodate the hydraulic jacks used in the leveling process. Beginning with the lowest portion of the home, the leveling begins under the direction of the lead technician. The technician monitors both the reaction of the structure and the interior elevation readings throughout the leveling. Teams move around the house systematically, following the direction of the lead technician, to create a gentle and uniform lift.

Phase 3

Pouring
Once the home is level, 10” sonotubes are cut to span from the top of the previously poured footing to the new height of the beam. Rebar is tied together inside the sonotube to provide ample strength and rigidity. The sonotubes are placed over the exposed rebar on the footings and concrete is poured into the form by hand.

Pier Completion
After the sonotubes have had sufficient time to set, the forms used in pouring are stripped away and any nominal space between the top of the sonotube and the beam is filled with steel shims. The remaining 12” of space below grade is filled with dirt, leaving only the sonotube column itself to be exposed above grade. With the home resting solely on the new piers, the temporary shoring is removed.
 
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