What Is The Difference of Fdp and Cfa? Cfa Vs. Fdp: Key Operational Differences
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What is the difference of fdp and cfa ?CFA vs. FDP: Key Operational DifferencesA Full Displacement Pile (FDP)-also referred to as a lateral displacement pile-is a cast-in-situ concrete piling system that combines the structural benefits of a driven displacement pile with the low-vibration execution of a bored pile.
Unlike Continuous Flight Auger (CFA) or Kelly drilling methods that excavate and extract soil to the surface, the FDP technique uses a specialized displacement tool to force the soil laterally into the surrounding matrix. This compacts and densifies the ground during advancement, improving the engineering properties of the adjacent soil.
CFA vs. FDP: Key Operational Differences
| Feature | Continuous Flight Auger (CFA) | Full Displacement Pile (FDP) |
| Soil Mechanics | Excavation & extraction (soil-breaking) | Squeezing & densification (soil-compacting) |
| Drill Spoil | High volume of surface waste to manage | Virtually zero surface spoil |
| Borehole Wall | Potential for decompression in loose layers | Densified, increasing lateral soil stresses |
| Rig Power Required | Standard torque / high extraction force | Extreme torque and high crowd force |
300MM FDP AUGER WITH SOILMEC CFA COUPLING HD5 FOR SOILMEC SR45 DRILL RIG
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300MM FDP AUGER WITH SOILMEC CFA COUPLING HD5 FOR SOILMEC SR65 DRILL RIG FOR FULL DISPLACEMENT PILE
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