The depth of pier foundations depends on one thing above all: how far down stable ground sits beneath your home. In some areas, our crews reach resistance at six feet. In others, the piers travel 40 or 50 feet before they hit bedrock. Depth is never a guess. The soil, the home’s weight, and the resistance each pier meets all factor into the final depth. This guide explains what controls that depth and how our crews reach it.
What Determines the Depth of Pier Foundations
Why Pier Foundations Reach Bedrock
Every pier we drive has one target: bedrock or stable strata, the point where the soil stops giving and starts pushing back. That resistance is what holds your home steady for the long term.
We keep driving until the pier lands on that solid layer. Loose or shifting soil near the surface cannot carry a structure, so the ground itself sets the depth.
The 10,000 PSI Benchmark
We push each pier to about 10,000 PSI. That pressure confirms the pier has reached the ground, strong enough to lift and support the home.
Key Takeaway: A pier reaches correct depth when two conditions meet: contact with stable strata and roughly 10,000 PSI of resistance.
How Depth Changes by Location
Deeper Ground in Clay County
Soil conditions shift from one city to the next. In Clay County, piers often run deep, anywhere from 25 to 50 feet before they reach bedrock.
Our segments come in one-foot sections, so deep installs move slowly. Around 20 feet, the equipment runs warmer, and the push gets harder.
Shallow Resistance in Overland Park
Some sites need far less depth. In parts of Overland Park, we reach 10,000 PSI at only six feet, lifting the home once the pier lands on stable strata.
Pro Tip: Never assume your neighbor’s depth matches yours. Two homes on the same street can sit on very different soil.
Need expert help with your foundation? Contact Foundation 1 for a free consultation.
Our Pier Foundation Installation Process
Concentric Piers Under the Wall
We prefer concentric piers, which place the support straight beneath the load. That is how we would want our own homes braced.
Here is how the two approaches compare:
- Concentric piers are installed directly under the wall, carrying the load head-on.
- Eccentric or helical piers grab the home from the side, anchoring next to the wall rather than directly under it.
The right choice depends on the city and its building preferences.
Interior Piers and Excavation
Outside work sometimes calls for an excavator to reach the footing. For interior piers, our crews jackhammer through the floor and dig beneath the house to expose the footing from below.
The lift itself follows a careful sequence:
- Team members work in the holes, counting off as each pier engages.
- The foreman watches a laser, tracking the home’s movement in real time.
- He calls for more pressure or holds a pier back until every point rises evenly.
Key Takeaway: A proper lift is a coordinated effort, not a single push.
The Right Depth Protects Your Home for Decades
The correct depth comes from reading the soil, hitting stable strata, and confirming pressure on every pier. That care is what keeps a home level long after the crew leaves.
Our team brings the equipment, training, and field experience to get it right the first time. Schedule your free consultation with Foundation 1 today and trust your home to a crew that builds dependable pier foundations.
