Hybrid Steel Pier Foundation Repairin Pflugerville

A hybrid steel pier combines two different foundation pier materials into one continuous support system. With the Bats system, the first 10 feet is essentially an all-steel pier.

The first 10 feet of the pier is constructed from 2⅞-inch steel, giving the system a relatively small profile through the upper soils where movement is typically most active. After the initial steel section is installed, we transition to 6-inch high-pressure-tested concrete cylinders and continue driving the pier until it reaches refusal or bedrock, whichever comes first.

We use:

The purpose is straightforward: use the smaller-diameter steel where its ability to penetrate the upper soils provides the most benefit, then use high-strength concrete to continue the pier deeper. The result is a deep-driven foundation repair system that provides many of the advantages of steel without requiring the entire pier to be constructed from steel.

This is the most important feature of our hybrid system.

The upper soils in Central Texas are generally the soils most affected by seasonal moisture changes. Our 2⅞-inch steel section has a much smaller diameter than the 6-inch concrete cylinders used later in the pier. That smaller profile allows us to drive the first 10 feet with relatively little surface area interacting with the surrounding soil.

In many of the Central Texas areas where we work, 10 feet of initial steel generally takes the pier through or beyond much of the active soil zone before we transition to concrete. So instead of beginning the pier with a larger concrete cylinder in the upper active soils, the Bats Hybrid Steel Pier starts with a smaller-diameter steel support column and transitions only after that initial depth has been reached.

Once the initial steel section has been installed, we transition to 6-inch high-pressure-tested concrete cylinders. The concrete cylinders are hydraulically pressed one at a time below the steel section. Additional cylinders are added until the pier reaches refusal or bedrock, whichever comes first.

This means a hybrid pier might ultimately extend considerably deeper than 10 feet. The finished support column consists of:

The steel remains at the deepest end of the pier because it is installed first.

An all-steel pier is an excellent foundation repair system, but constructing the entire driven support column from steel is more expensive. Our hybrid system puts steel where we believe it provides the most value: through the first 10 feet of penetration.

After that, high-pressure-tested concrete cylinders allow us to continue driving the pier deeper without the cost of adding steel for every additional foot. That gives homeowners a system with:

There is no predetermined total depth. The steel portion is approximately 10 feet, but the complete pier continues deeper with high-pressure-tested concrete cylinders. Depending on the location, the finished pier may extend only a short distance beyond the steel transition or considerably deeper.

Because Bats has installed piers throughout Central Texas, we can often review depth records from nearby projects to gauge the conditions we may encounter in a particular neighborhood. Those records provide useful context, but they aren't a guarantee. Actual conditions can vary even between pier locations on the same property.

Installation continues until each pier reaches the required supporting condition.

Like our All-Steel Pier System, our Hybrid Steel Pier is installed concentrically beneath the grade beam. The support column sits directly beneath the structural load instead of supporting the foundation from an offset position.

This creates a direct load path from the foundation through the pier and into the supporting material below. Both Bats-driven pier systems use this same concentric installation approach.

Once the hybrid piers have been installed, multiple jacks are positioned throughout the repair area. Our crews make coordinated adjustments across several pier locations while monitoring elevations and the structure's response.

We don't promise to force every home perfectly level. We lift to the limits of the structure and make as much improvement as the existing home will reasonably allow.

Once the adjustment is complete, steel shims are installed at the pier head to maintain the new elevation. The lifting jack is removed, a concrete cylinder is installed at the top of the pier assembly, and additional steel shims are fitted to permanently secure the foundation.

Both are deep-driven foundation repair systems, and both are installed concentrically beneath the foundation. The primary difference is what happens after the first 10 feet.

The first 10 feet is steel. After that, the system transitions to 6-inch high-pressure-tested concrete cylinders and continues until refusal or bedrock. Because the entire pier isn't constructed from steel, it offers a lower-cost option.

Steel continues throughout the entire driven depth of the pier until refusal or bedrock is reached. That makes our All-Steel Pier the premium option and increases cost with greater installation depth.

Neither system is automatically right for every homeowner. If both are appropriate for your foundation, we'll explain the differences in construction, pricing, and warranty and let you decide which system makes the most sense. Learn more about our All-Steel Pier System.

No. Although high-pressure-tested concrete cylinders make up part of the completed support column, the first 10 feet of the Bats Hybrid Steel Pier is steel.

That initial steel section is an important distinction between our hybrid system and traditional pressed concrete piling, which begins with concrete at the top of the soil profile. The hybrid system is specifically designed to take advantage of the smaller steel profile during the initial installation, then transition to concrete at greater depth.

Traditional pressed concrete systems use larger-diameter cylinders from the start of the installation. In Central Texas soils, trying to push a 6-inch concrete cylinder through the upper 10 feet can create substantial resistance before the pier has moved beyond the more active soil zone.

Our Hybrid Steel Pier takes a different approach. By starting with 2⅞-inch steel for the first 10 feet, the pier has a much smaller profile through the upper soils, allowing it to penetrate deeper before transitioning to the larger 6-inch high-pressure-tested concrete cylinders. Once the initial steel section is installed, we use concrete to extend the pier deeper until refusal or bedrock is reached.

This is the primary advantage of the hybrid design: use smaller-diameter steel to reach the upper active soils, then transition to high-strength concrete for the remaining depth without incurring the cost of an all-steel pier.

Hybrid piers can also be installed beneath interior grade beams when structural support is required and access is practical. Before opening a finished slab, we use Ground Penetrating Radar, or GPR, to help identify:

When a driven pier can reasonably be installed, we generally prefer a structural pier for significant interior foundation movement. If access, occupancy, or disruption makes an interior pier impractical, polyurethane foam injection may sometimes be considered as a less invasive alternative. Learn more about polyurethane foam injection.

Most residential Bats slab foundation repairs take approximately one to three days, depending on the number of piers, interior access, installation depths, and overall complexity of the project. Every Bats foundation repair project also includes:

Every project receives independent review by a licensed professional engineer, with engineering documentation provided after completion.

We require a hydrostatic plumbing test after the foundation repair is completed. Bats does not employ plumbers or sell plumbing repairs. We intentionally keep plumbing testing separate so the homeowner receives an independent evaluation from a licensed plumbing professional and Bats has no financial incentive tied to the result.

We take final elevations after the foundation has been adjusted and secured to document the completed repair.

Learn more about our slab foundation repair process.

The Bats Hybrid Steel Pier is designed to balance the performance advantages of steel with the value of high-strength concrete. You get:

It's not a shortened steel pier and it's not a traditional concrete piling. It's a combination of both materials designed around where each one provides the most value.