How do pressed concrete piers work?

Precast concrete cylinders are driven into the ground one at a time using hydraulic force, with the weight of the structure acting as the reaction. Each cylinder is pressed down and the next placed on top, building a column as it advances. When the pressure required indicates the column has reached material capable of carrying load, driving stops and a bracket transfers load from the foundation onto the pier.

What are the real limitations of concrete piers?

Two significant ones. The cylinders are wider than a steel section, which means more surface area for expansive clay to grip during wet cycles — soil movement can act on the pier itself. And a wider column is more readily stopped by an obstruction or a dense layer at shallower depth, which can produce premature refusal where the pier appears to have reached bearing material but has not. Where depth to competent material is uncertain, those limitations matter.

When are concrete piers appropriate?

Where competent bearing material is relatively shallow, reasonably consistent across the site, and reaching it is well within the method's capability. In those conditions pressed concrete is a sound, established system at a lower cost per location than steel. It is a legitimate choice and we quote it when the site suits it — recommending the more expensive option by default is not honesty, it is just more expensive.

Do concrete piers last?

Concrete in soil is durable and the material itself is not the usual concern. What determines longevity is whether the column reached genuinely competent material and whether the cause of the original movement was addressed. Those questions apply to any method. Installation records showing depth and pressure at each location are how you distinguish a properly founded pier from one that stopped early.

Can concrete piers be used on any soil?

They are widely used in residential work across North Texas, but suitability is site-specific rather than regional. What matters is the depth to competent material at your property, what lies between, and whether the loads at each location are within what the system handles. The evaluation informs that, and the installation itself confirms or corrects the prediction.

Concrete Pier Systems: How They Work

The second of the two systems on our repair methods page, with its strengths and its real limitations.

What a pressed concrete pier is

A pressed concrete pier is a column of precast concrete cylinders, driven into the ground one section at a time until the column reaches material capable of carrying load.

The cylinders interlock as they stack, forming a continuous column. Once refusal is reached, a bracket connects the foundation to the top of the column and load transfers onto it.

It is an established residential underpinning method, widely used, and in the right conditions entirely appropriate. It is also frequently either oversold as universally adequate or dismissed as inferior, and neither framing is accurate.

Concrete cylinders being pressed into the ground beside a slab grade beam

How installation works

Excavate at the grade beam or footing to give working access and room for the bracket.

Position the ram. A hydraulic ram bears against the foundation, using the structure’s weight as reaction.

Press. A cylinder is placed and driven down. Another is placed on top and driven. The column advances as cylinders are added.

Reach refusal. Driving continues until the pressure required indicates the column has reached competent material.

Transfer load. A bracket is fixed beneath the foundation and connected to the pier.

Record. Location, depth, and final pressure for each pier.

Backfill and reinstate per the written scope.

The sequence is essentially the same as for steel — the difference is what is being driven and how far it can practically go.

Where the method fits well

Condition	Why concrete works
Competent material is relatively shallow	The depth required is well within the method
Site conditions are consistent	Less risk of one location behaving unexpectedly
Loads are moderate residential	Within the system’s capability
Budget matters and the site suits it	Lower cost per location than steel

Where those conditions hold, pressed concrete does the job and the money saved is real. There is no virtue in over-specifying a system for a site that does not need it.

Open excavation showing a completed concrete pier column and the bracket seat above it

The limitations, stated honestly

Surface area and clay grip. A wider column presents more surface for expansive soil to act on. When clay swells, it can grip the pier and apply upward force — the phenomenon that makes a narrower profile advantageous in highly active soils.

Premature refusal. A wider column is more readily stopped by an obstruction, a rubble layer, or a dense band at shallow depth. The pressure reads as refusal, but the pier is bearing on something that is not a competent stratum. This is the failure mode worth understanding, and installation records are what expose it.

Practical depth. Where competent material is a long way down, the method becomes impractical relative to a system designed to reach further.

None of these makes the method wrong. They make it site-dependent, which is the point of this whole section of the site.

What to ask about a concrete pier proposal

What depth is anticipated at each location? And what happens if refusal occurs at an unexpectedly shallow depth — is that investigated or accepted?

Will I receive installation records? Depth and pressure per location is the evidence of what was actually reached.

Why this method rather than steel here? A good answer references site conditions. A weak answer references what the company installs.

What are the warranty terms? They differ by system. See understanding foundation repair warranties.

Choosing between the two

The honest position is that neither system is universally correct, and a company that only offers one has a structural incentive to tell you it is.

The direct comparison guide sets the two against each other on depth, soil behavior, cost, and how the choice should be made. The repair methods page covers how we approach the selection, and what driven to refusal means explains the term both systems rely on.