Abstract: Disclosed in this specification is a method and apparatus for placing an auger grouted displacement pile or helical pile in soil. The pile has an elongated shaft with at least one lateral compaction protrusion which establishes a regular bore diameter in the supporting medium. The pile also has a helical blade configured to move the pile into the supporting medium. The bottom of the shaft includes means for forming irregularities in the bore diameter after compaction by the lateral compaction protrusion. The bore is filled with grout while leaving the pile in the soil.

Abstract: Disclosed in this specification is a method and apparatus for placing an auger grouted displacement pile or helical pile in soil. The pile has an elongated shaft with at least one lateral compaction protrusion which establishes a regular bore diameter in the supporting medium. The pile also has a helical blade configured to move the pile into the supporting medium. The bottom of the shaft includes means for forming irregularities in the bore diameter after compaction by the lateral compaction protrusion. The bore is then filled with grout while leaving the pile in the soil.

Abstract: Disclosed in this specification is a method and apparatus for placing a helical pile in the soil with minimal disturbances to the soil. The helical pile has an elongated pipe with a central chamber. The pipe has a helical blade with an opening in the trailing edge of the blade where grout is extruded. The grout fills those portions of the soil which were disturbed by the blade. Advantageously, those portions of the soil which were not disturbed by the blade are not infused with grout.

Abstract: Disclosed in this specification is a method and apparatus for placing a helical pile in the soil with minimal disturbances to the soil. The helical pile has an elongated pipe with a central chamber. The pipe has a helical blade with an opening in the trailing edge of the blade where grout is extruded. The grout fills those portions of the soil which were disturbed by the blade. Advantageously, those portions of the soil which were not disturbed by the blade are not infused with grout.

Abstract: The invention includes a coupling for assembling pile sections in series. The pile sections each include transverse flanges at each end. The pile sections are coupled together by fastening a flange of one pile section to a flange of another pile section. This allows the fasteners to be oriented in a direction that is substantially parallel to the longitudinal axis of the pile sections.