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STELCOR Drilled-In Displacement Pile
Installing deep foundations in environments with limited access, contaminated soils, or delicate surroundings doesn't have to strain your budget and timeline. STELCOR DDM's use the proven foundation elements, grout and steel, but reimagined and reengineered for cleaner and faster installation, resulting in a superior deep foundation solution.
An Efficient Solution for Complex Sites
STELCOR, the original Drilled-In Displacement Pile (DDM), was engineered to provide a high-capacity deep foundation solution installed with compact equipment, that minimizes mess and disruption.
By displacing soil instead of removing it, STELCOR eliminates hidden costs by removing the risk of undermining nearby structures and costly contaminated soil removal. Additionally, STELCOR can be installed with as little as 10 feet of headroom, without significantly impacting installation speed or complexity.
Contaminated Soils
Limited Access and Low Overhead
Delicate Surroundings
Predictable Pile Results and Grout Placement
From structural, geotechnical, mechanical, and installation perspectives, STELCOR just makes sense—and the load test results prove it. Its innovative design ensures predictable grout placement and load test results helping you get your project off the ground faster.
Consistent Pile Results
Soil Stratum Verification during Installation
What does STELCOR cost?
When considering material cost with STELCOR DDMs, it’s important to consider all the factors in order to know your true cost per foot of piling. As one developer so perfectly put it, “I want to know my cost-per-kip of support with each piling option, not my cost per foot of material.” Below are a few points to help you drill down and understand the true cost per foot of STELCOR DDM’s vs other piling options.
Material
Depending on the soil type, a STELCOR DDM pile will often achieve the same or higher capacity as other pile types while being installed to lesser depths that’s why it's important to not just compare per foot costs.
Equipment
To install STELCOR DDMs, you need a high shear colloidal grout mixer, a hydraulic rotary drive head, and an excavator (which is often already on site). What installation equipment is needed to install other pile types and what is the cost of getting that equipment on site?
Time
A 60′ STELCOR DDM pile can easily be installed in 30 minutes, offering as much a 50 percent increase in installation rates over traditional methods. That includes placing the initial 20′ lead section, installing it, adding two more 20′ extensions and installing them, and then moving to the next pile location.
the Essential elements of a DDM
STELCOR Drilled-In Displacement Pile (DDM) Overview
STELCOR DDM’s are designed and installed as a Displacement Pile in accordance with the International Building Code (IBC) and local jurisdictions. STELCOR Drilled-In Displacement Piles are rotated into the ground while crowd or downward pressure is exerted on the steel core, and a continuous flow of grout is provided to the top of the pile. The reverse grout flighting, welded to the steel core, draws grout into the annulus created by the displacement head located at the tip of the pile, which ensures both a continuous grout column and structural load transfer to the steel core.
The STELCOR displacement head includes a drive plate that advances the pile downward into the soil, a lateral displacement plate that creates a positive annulus around the steel core and reverse grout auger by displacing the soil laterally, and a secondary deformation structure that creates an outer ribbing which enhances the grout-to-ground bond strength. A new, full-length 80 ksi steel core is installed and left in the ground, ensuring unbroken structural integrity, and providing a grout-filled steel core shaft for axial and lateral load capacities.
ONE OR MORE OF THE FOLLOWING PATENTS MAY APPLY:
US 8,926,228 B2 & US 10,480,144 B2; OTHER PATENTS PENDING.
Installation Equipment
STELCOR Drilled-In Displacement Piles offer customers a cost-effective foundation solution by eliminating the need for expensive, purpose-built drill rigs. With readily available equipment often already on-site, customers benefit from easy mobilization, even on challenging or remote install sites. Any specialized equipment is affordable to operate, maintain, and repair, typically paying for itself within the first few projects.
STELCOR's installation approach keeps foundation costs down without sacrificing on efficiency or capacity.
Excavator of Appropriate Size (Other equipment used for low overhead)
High Shear Colloidal Mixer
Planetary Drive Head (20,000-150,000 Ft-Lbs)
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Let's Chat
Wondering if STELCOR is a good fit for your project?
We get it, unbiased advice isn’t always easy to come by.
Talk to a member of our team to receive honest opinions and quickly understand if STELCOR Drilled-In Displacement Piles could save you time and money—no agenda or strings attached.
