Concrete Pressed Piers
How Concrete Piers Work and their Advantages
Concrete Pressed Piers are the most commonly used method of Foundation Repair in Texas. Concrete cylinders are reliable and long lasting.
Pressed concrete pilings are pre-cast cylinders of concrete, approximately one foot long and six inches in diameter. The installer begins by digging a two-foot hole next to the foundation and uses a hydraulic ram to drive the cylinders, one on top of the other into the soil until significant resistance is felt, strata is reached or bedrock is hit. Concrete cylinders are hydraulically pressed against the bottom of the foundation. This drives the cylinder into the ground against the weight of the house. A concrete cap is then added. Bottle jacks are used to lift the house as close as possible to its original position, additional cylinders and metal shims fill the space between the piling’s cap and the foundation and the house is lowered onto the pilings. The holes are then backfilled.
Benefits of Concrete Piers for Foundation Repair in Dallas/Fort Worth
- Minimal equipment and space needed for installation
- Proper depth can be reached by driving against the load of the structure being raised.
- Site cleanliness and speed save time and minimize damage to landscape
- Pre-cured/tested concrete used to allow immediate leveling of the structure
- Safer working conditions
- Fully adjustable system for the life of the structure
- Lifetime Transferable Warranty
What the typical concrete pier install looks like
- Dig top holes (approximately 3′x3′x3′) underneath the perimeter grade beam of the structure at pre-determined pier placement sites.
- Place all loose dirt on plywood or plastic for ease in clean up, and to minimize disturbance of lawn and landscaping.
- Use hydraulic power unit to press pre-cast concrete cylinders into the ground until jacked refusal has been met (solid strata).
- Place cap (trapezoid) block on top of pier cylinders that have been driven to solid strata.
- Remove all loose mortar from the cracks in the brick veneer.
- Using the top of the trapezoid block, size and place a pre-cast concrete cylinder beside a hydraulic jack.
- Using a pre-determined sectional approach, raise areas of structure in small increments until structure’s natural position has been attained or.
- Using steel shims to secure the lift of the structure, place steel shims on top of the cylinder that was placed in Step 8 above.
- Remove hydraulic jacks, then size and place another pre-cast concrete cylinder beside the cylinder placed in Step 8, using steel shims to secure cylinders in place.
- Place soil in top hole surrounding pier cap. Use a mounting approach to allow for soil subsidence. Remove excess soil from the site.
- Discard plywood and rake areas free of debris.