--- title: STELCOR Drilled-In Displacement Pile (DDM) | IDEAL Group description: A deep foundation solution that’s cleaner, faster, and more cost-effective than conventional systems on sites with limited access, contaminated soils, or nearby structures. --- [Skip to main content](https://www.idealfoundationsystems.com/stelcor-products/#maincontent) Cleaner, Faster, Better. # 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. [ Talk to a Consultant ](https://www.idealfoundationsystems.com/talk-to-consultant/) ![JFK T4](https://www.idealfoundationsystems.com/hs-fs/hubfs/STELCOR%20PAGE/JFK%20T4.png?width=823&height=413&name=JFK%20T4.png) WHY CHOOSE STELCOR? ## Expedite Timelines and Remove Complexity from your Projects STELCOR excels on challenging projects where traditional deep foundations are not feasible due to costly spoil removal, tight schedules, limited access, or high water tables. The installation process requires minimal equipment, reducing mobilization and demobilization costs and significantly shortening installation timelines. Additionally, no spoils or drill tailings are created, which saves additional time and money when installing on contaminated sites or in areas where spoil disposal is complicated. [ Talk to a Consultant ](https://www.idealfoundationsystems.com/talk-to-consultant/) [ Request a Quote ](https://www.idealfoundationsystems.com/request-a-quote/) ![Checkmark](https://www.idealfoundationsystems.com/hs-fs/hubfs/Checkmark.png?width=53&height=52&name=Checkmark.png) ### Minimal Mobilization and Demobilization Costs The only equipment needed for installing STELCOR DDMs is an excavator or skid-steer, a hydraulic-powered rotary drive head, and a high sheer colloidal grout mixer. With no specialty cumbersome installation equipment setup, on-site mobilization and demobilization is a cakewalk. ![Checkmark](https://www.idealfoundationsystems.com/hs-fs/hubfs/Checkmark.png?width=53&height=52&name=Checkmark.png) ### Reduced Installation Timelines The installation process and type of equipment used means STELCOR can be installed 5 times faster than alternate deep foundations, allowing you to shave weeks off your schedule.   ![Checkmark](https://www.idealfoundationsystems.com/hs-fs/hubfs/Checkmark.png?width=53&height=52&name=Checkmark.png) ### No Spoil Removal or Drill Tailings As the pile is installed, the lateral displacement head located at the tip of the pile displaces the soil laterally to form an annulus for the grout body. Not only does this eliminate the cost of removing spoils (even more costly when contaminated), it also enhances the grout-to-ground bond strength in the densified soil.   ## 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. ![Checkmark](https://www.idealfoundationsystems.com/hs-fs/hubfs/Checkmark.png?width=53&height=52&name=Checkmark.png) ### Contaminated Soils ![Checkmark](https://www.idealfoundationsystems.com/hs-fs/hubfs/Checkmark.png?width=53&height=52&name=Checkmark.png) ### Limited Access and Low Overhead ![Checkmark](https://www.idealfoundationsystems.com/hs-fs/hubfs/Checkmark.png?width=53&height=52&name=Checkmark.png) ### 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. ![Checkmark](https://www.idealfoundationsystems.com/hs-fs/hubfs/assets/icons/Checkmark.png?width=53&height=52&name=Checkmark.png) ### Consistent Pile Results ![Checkmark](https://www.idealfoundationsystems.com/hs-fs/hubfs/assets/icons/Checkmark.png?width=53&height=52&name=Checkmark.png) ### Soil Stratum Verification during Installation [ Talk to a Consultant ](https://www.idealfoundationsystems.com/talk-to-consultant/) [ Request a Quote ](https://www.idealfoundationsystems.com/get-a-quote/) ![SUBSTATION-1](https://www.idealfoundationsystems.com/hs-fs/hubfs/STELCOR%20PAGE/SUBSTATION-1.jpg?width=850&height=573&name=SUBSTATION-1.jpg) ## Design and Installation Resources [## STELCOR DDM - Overview Learn More ](https://idl-grp.box.com/v/STELCOR-OVERVIEW) [## STELCOR DDM - Cut Sheets Learn More ](https://idl-grp.box.com/s/9iq481kft048c5bxpb4kvo5mez9i7eq0) [## STELCOR DDM - Design Guidelines Learn More ](https://idl-grp.box.com/v/STELCOR-DESIGN-GUIDELINES) [ Additional Product Documentation ](https://www.idealfoundationsystems.com/product-documentation/?pageNumber=0&sortType=popularity&sortOrder=desc&resource_product1=7) ## 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. ![Checkmark](https://www.idealfoundationsystems.com/hs-fs/hubfs/assets/icons/Checkmark.png?width=53&height=52&name=Checkmark.png) ### 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. ![Checkmark](https://www.idealfoundationsystems.com/hs-fs/hubfs/assets/icons/Checkmark.png?width=53&height=52&name=Checkmark.png) ### 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? ![Checkmark](https://www.idealfoundationsystems.com/hs-fs/hubfs/assets/icons/Checkmark.png?width=53&height=52&name=Checkmark.png) ### 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. [ Request a Quote ](https://www.idealfoundationsystems.com/get-a-quote/) 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. ![STELCOR DIAGRAM - GRAY-1](https://www.idealfoundationsystems.com/hs-fs/hubfs/STELCOR%20PAGE/STELCOR%20DIAGRAM%20-%20GRAY-1.png?width=450&height=750&name=STELCOR%20DIAGRAM%20-%20GRAY-1.png) ## 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. ![Checkmark](https://www.idealfoundationsystems.com/hs-fs/hubfs/assets/icons/Checkmark.png?width=53&height=52&name=Checkmark.png) ### Excavator of Appropriate Size (Other equipment used for low overhead) ![Checkmark](https://www.idealfoundationsystems.com/hs-fs/hubfs/assets/icons/Checkmark.png?width=53&height=52&name=Checkmark.png) ### High Shear Colloidal Mixer ![Checkmark](https://www.idealfoundationsystems.com/hs-fs/hubfs/assets/icons/Checkmark.png?width=53&height=52&name=Checkmark.png) ### Planetary Drive Head (20,000-150,000 Ft-Lbs) ![FIRST NATIONAL CENTER - SC1600 - 7 (34)-2](https://www.idealfoundationsystems.com/hs-fs/hubfs/FIRST%20NATIONAL%20CENTER%20-%20SC1600%20-%207%20(34)-2.jpg?width=2000&name=FIRST%20NATIONAL%20CENTER%20-%20SC1600%20-%207%20(34)-2.jpg) ## STELCOR Projects Nationwide ## Commonly Asked Questions ### What are the grout take approximations? Recommended grout mix of 0.44 water to cement (W/C) or 94 lb. bag to 5 gallons of water using Type I/II Portland cement. A colloidal mixer must be used. - STELCOR 1200 – 0.38 Cubic ft. per lineal foot (0.33 bags per lineal foot) - STELCOR 1400 – 0.44 Cubic ft. per lineal foot (0.38 bags per lineal foot) - STELCOR 1600 – 0.67 Cubic ft. per lineal foot (0.59 bags per lineal foot) - STELCOR 1800 – 0.88 Cubic ft. per lineal foot (0.77 bags per lineal foot) - STELCOR 2000 – 1.15 Cubic ft. per lineal foot (1.00 bags per lineal foot) Note: Published grout take approximations are for bidding purposes only. Actual grout take will vary depending on soil type. The test pile(s) establishes the installation parameters including depth, grout take, and capacity for production piles in the site-specific soil. ### What load range can STELCOR support? STELCOR has been designed and tested to the following loads without failure:  - 620 kips Ultimate Compression Load - 600 kips Ultimate Tension Load - 40 kips Lateral Load ### What are common applications? Below are descriptions of real projects we have completed. If your project doesn't sound like any of the below, [talk to a consultant](https://www.idealfoundationsystems.com/talk-to-consultant/) to learn if STELCOR will be a good fit. - 16-story New Construction Residential Building - New York, NY - Sewer and Drainage Support - Washington, DC
• Basement Retrofit for 5-Story Vertical Addition - New York, NY - Retrofit Existing Industrial Facility for New Machinery - Duluth, MN - 12-Story Office and Hotel New Construction - Baltimore Harbor, MD 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. [ Talk to a Consultant ](https://www.idealfoundationsystems.com/talk-to-consultant/) ![ALICEANNA](https://www.idealfoundationsystems.com/hs-fs/hubfs/STELCOR%20PAGE/ALICEANNA.png?width=800&height=402&name=ALICEANNA.png)