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Earth Tech Fact

Earth Tech is the only foundation stabilization company to use internally threaded connections for all of our underpinning projects.
Feel free to contact Earth Tech with questions related to your project 24 hours a day.
813-909-8000


Air Rotary or Rotary Wash

Auger Drilling Techniques | Percussion Drilling Techniques | OdexTM or TUBEX | Grout Pumps | Grout Sources
Vibratory Drilling Techniques (Crane & Mandrel) | Air Rotary or Rotary Wash | Grout Mixes | Slump Test

This method uses typical drilling techniques and tooling to advance the hole by removing the cuttings with air, water or bentonite slurry. Drill rods or casing may be washed into place and used to inject the compaction grout. This method is effective where the limestone lies deep beneath the surface or when soil conditions cause the drill hole to collapse or cave prior to installing the steel casing. This is the most common method used to advance grout injection pipes when working around existing structures.