Slab Piers Stabilize Settled Ranch Homes and Slab Additions Permanently
Epp Foundation Repair has installed small-diameter helical slab piers under ranch homes, slab additions, and light commercial slabs across Nebraska, Iowa, Kansas, and Missouri since 1994. Engineered for slab-on-grade loads, warrantied for life on the pier.
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What slab piers is and when it's the right call.
Slab-on-grade homes settle when the soil under the slab loses bearing capacity. The slab itself is doing its job. Spreading the structure's load across a wide footprint, but if the soil beneath that footprint fails, the slab moves with it. In eastern Nebraska and western Iowa, the dominant failure mode is hydroconsolidation of loess: the loose silt structure collapses under load once water reduces particle friction, and a single wet spring after a dry summer can drop a slab a half-inch in weeks. In eastern Kansas and western Missouri, expansive clay with plasticity index above 30 swells and shrinks with moisture, lifting the slab in spring and dropping it in fall until cumulative differential movement cracks the slab or separates it from the structure. Across all four states, slab additions poured on disturbed soil with no compaction testing are the most common settlement candidates Epp sees. Slab piers bypass the failing soil layer by transferring the slab load past it to competent bearing soil below. The pier itself is a small-diameter helical. Typically 2-3/8-inch or 2-7/8-inch steel shaft with welded helical plates, scaled down from the full-size helicals used on basement homes because slab loads per linear foot are lower. A hydraulic torque motor advances the shaft into the ground with the helical plates pulling the pier downward like a wood screw. The crew monitors installation torque continuously. When torque matches the engineered target (typically 4,000 to 7,000 foot-pounds depending on shaft and load), the helical has reached load-bearing soil and driving stops. The bracket then mounts to the slab edge or to a plate cast against the underside of the slab, and the slab load transfers to the pier. Lift expectations differ from full-basement work. A slab is more rigid in plan and less forgiving than a basement wall. The entire slab plate tries to move as a unit, and forcing too much lift in one location can crack the slab elsewhere. Epp typically recovers 30 to 50 percent of lost elevation on slab piers, less than the 30 to 70 percent typical on basement homes, and the company says so on the inspection visit. Foam injection is often paired with slab piers to fill the void left when the slab is lifted. The piers stop further settlement, and the foam fills the gap that the settled soil left below. The two work together because lifting a slab with piers alone leaves a hollow space under the slab that will eventually collapse and undo the lift. The combined slab pier plus foam install is one of the most common scopes Epp writes for ranch homes and additions across the service area.
How we install slab piers.
Slab Survey and Pier Layout
Epp Foundation Repair maps slab elevation with a laser level to the quarter-inch across the affected area, identifies the settled zone and the high reference points, and specifies pier count and spacing. A typical settled ranch or slab addition takes 4 to 8 slab piers along the affected edge at 4 to 6 feet on center.
Core Drilling Pier Access Through the Slab
Where pier locations fall on the interior of the slab, the crew core-drills a small access hole (typically 4 to 6 inches in diameter) through the concrete to expose the soil beneath. Exterior pier locations use a small access pit at the slab edge instead.
Helical Pier Torqued to Bearing Soil
A hydraulic torque motor advances the small-diameter helical pier through the access hole and into the soil, with the welded helical plates pulling the pier downward as it rotates. Crews monitor installation torque continuously. When the torque reading matches the engineered target (typically 4,000 to 7,000 foot-pounds), the pier has reached load-bearing soil.
"A slab is rigid in a way a full basement isn't, so we get less lift recovery. Usually 30 to 50 percent. What we always get is the slab to stop moving, and we tell people that up front before they sign anything."
Care and expertise from a team that's been doing this since 1994.
Epp Foundation Repair is locally owned and operated, with crews dedicated exclusively to foundation, basement, and concrete work across the Midwest.
Foundation repair, waterproofing, and concrete leveling are our entire focus. not a sideline.
Three decades of experience with Midwest soils, basements, and weather conditions.
Recognized in 2011 and 2016 for ethical business practices and customer transparency.
Most product solutions carry 10 to 25-year warranties backed by the original installer.
Answers to common questions about Slab Piers.
Don't see your question here? Our team is happy to help. Reach out anytime.
Other foundation repair solutions we install.
Every solution is engineered for a specific soil profile and failure mode. Browse the full toolkit.
Carbon Fiber Reinforcement
Epp Foundation Repair has reinforced bowed walls across Nebraska, Iowa, Kansas, and Missouri since 1994. No interior steel, no excavation, no lost basement space.
Learn moreDeep Foundation Systems
Epp Foundation Repair has stabilized settling structures across Nebraska, Iowa, Kansas, and Missouri since 1994 by carrying the load past weak surface soil to firm ground below. Stop the settlement, then attempt to recover what you can.
Learn moreEpoxy Crack Injection
Epp Foundation Repair has injected foundation cracks across Nebraska, Iowa, Kansas, and Missouri since 1994, and uses sequential polyurethane plus epoxy when one alone won't hold.
Learn moreExpansion Joints
Epp Foundation Repair has placed and resealed expansion joints across Nebraska, Iowa, Kansas, and Missouri since 1994. A good joint gives concrete room to move so it cracks where you want it to, not where you don't.
Learn moreFoundation Underpinning
Epp Foundation Repair has driven engineered piers through Nebraska loess and Kansas clay since 1994. Helical, push, and slab piers, matched to the soil and the structure.
Learn moreHelical Deck Piers
Epp Foundation Repair has set helical deck piers across Nebraska, Iowa, Kansas, and Missouri since 1994. Steel screwed into firm ground holds a deck level through every freeze-thaw season.
Learn moreServing Nebraska, Iowa, Kansas & Missouri.
Local crews based in six regional offices, dispatched daily across four states. If your town isn't listed, call us. we likely serve your area.
- Omaha, NE
- Lincoln, NE
- Des Moines, IA
- Ankeny, IA
- Topeka, KS
- Urbandale, IA
- Sioux City, IA
- West Des Moines, IA
- Bellevue, NE
- St. Joseph, MO
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Expert guidance on protecting your home.
Practical articles from the Epp team on foundation health, waterproofing, and home preservation.
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