We’re the only FDOT Company that offers emergency stabilization, restoration and repairing the toughest sinkholes with fast and reliable service.
The visible signs of a sinkhole can be right in front of you: cracked roads, sidewalks, structure walls, or floors; an exposed foundation; doors unable to close correctly. Seawalls and bridges shifting can be repaired with our high technology of chemical injection. Foundation stabilization, ground remediation and chemical grouting are our specialization. Call your insurance provider if you see any of these signs, and then call us for a completely free inspection.
Your expert YD Contractors, Inc. Project Manager is available throughout the entire process to ensure all expectation are met. Each of our Project Managers is trained not only to be available 24/7 to answer your questions, but is available to help guide you with any problems during your insurance claim, assist with any issues that may arise during any part of the remediation/restoration process.
Our team is trained to take careful steps to ensure all safety measurements are enforced to keep the project site, crew and public safe while delivering the highest quality possible.
With large sinkholes, we use Compaction Grouting to fill in holes and stabilize soil. This method fills sinkholes and strengthens weak soil 15 feet below the surface.
Compaction grouting or pressure grouting:
Sinkhole activity in close proximity to or under a structure is evidence that there is a void in the limestone or dolostone stratum. In order to properly remediate the sinkhole activity the void needs to be sealed with cement grout. An effective remediation will consist of inserting the cement grout into the subsurface at predetermined points as recommended by a professionally licensed engineer that has been employed to monitor the project. A drill rig, as is commonly used in the industry, will be used to bore down to the limestone or dolostone stratum at the predetermined points, either in a straight or angled manner. After the drilling is completed, casing or piping equaling 2.78 inches in diameter will be inserted into the borings. Once the piping is inserted into the boring cement grout will be pumped into the proximal end of the piping under high pressure. The pumping will be monitored by a professional engineer and as pressure builds in the lower depths of the bore hole, the piping will be gradually raised so as to fill the lower stratums with a consistent amount of cement grout. The process will be followed until the piping reaches a depth of 15’ below the ground surface. The same process will be followed for each predetermined grout point.
Specialized equipment will be calibrated and employed in and around the structure under which the soils are being remediated. The purpose of the equipment is to detect if any portion of the structure experiences uplifting as a result of the cement grout being pumped into the soils below said structure. If the equipment detects any movement in the structure the engineer will be alerted and grouting activity will be suspended until the engineer determines that grouting can begin again.
Because resistance piers utilize the weight of the structure for resistance, heavy machinery is usually not required to drive piers as with other pier installation methods. Thus, a typical foundation repair using resistance piers in Florida is minimally invasive and causes very little disturbance to the surrounding landscape.
Installation of the resistance pier system effectively transfers the weight of the structure’s settling foundation from the unstable soil to deep-driven steel piers. Each pier is driven individually, allowing incredible flexibility as the foundation repair contractor is able to drive each pier to the depth necessary to achieve target resistance.
After the piers have been installed a final lifting is completed in a series, making sure every section of the property is stabilized according to the engineer’s recommendation.
Chemical Grout, Shallow Grout or Urethane Injection
Urethane injection is a process commonly known as chemical grouting. There a two main reasons that chemical grouting would be utilized. The first is to remediate or strengthen loose soils directly below a structure. Chemical grouting is preferred over compaction grouting at shallower depths because it is more easily controlled and reduces the risk of major uplifting to the structure. The second reason to use chemical grouting is to lift specific portions of a structure. Given these two uses for chemical grouting it can be used to permeate and strengthen loose soil, to expand and lift a structure, or the uses can be combined to permeate the soil as a means of strengthening the soil while also expanding in the soil to create uplift in order to level out a structure.
YD Contractors, Inc. has developed a method of employing chemical grouting with minimal drilling that allows for a permanent repair. The boring holes required by YD’s method range from 5/8” to 1/16” and can be utilized to improve soil conditions from just below the ground surface to a depth of 40’, making the YD method unique in the industry.
Stabilizing Your Structure
Our first concern is stabilizing your property. In underpinning, your property rests atop steel piers buried in the ground. These structures move the weight of your property to solid bedrock or strata. For shallower stabilization and rebuilding, Helical Piers are used. If your property requires additional support we combine Injection Piers to Compaction Grouting and Underpinning for complete structure stabilization.
These are used to stabilize damaged structures. Helical Piers take the weight off weak soil and put it on the piers.
If surface soil is loose, the foundation of your property can shift. Underpinning prevents this by transferring the weight of the foundation to solid bedrock.
An incredibly stable technique, Injection Piers inject grout through pins and into the ground to stabilize soil and create a solid foundation.
Foundation failures in Florida are common, which means new property owners should consider preventive measures. Preventative measures, such as Pre-Construction Piers, guarantee a stable foundation and alleviate sinkhole risks.