Patent ID: 8272810

Claim:
Pile segments to be driven from the ground surface into the ground, comprising: a plurality of pile segments, each pile segment having: a head with a radially extending first surface, a radially extending second surface spacially offset from the first surface, and an axially extending third surface connected between the first surface and the second surface, wherein the third surface of the head is perpendicular to the first surface and to the second surface; and a trunk extending from the head and having an axially extending outer surface and a lower surface, wherein the outer surface of the trunk is connected to the second surface and extends normally from the second surface, and wherein the trunk lower surface is connected to the outer surface, extends normal to the outer surface and, extends parallel to the head first surface; and a throughbore passing axially through the heads and the trunks, the throughbore having a longitudinal centerline and a constant diameter; wherein the plurality of pile segments are arranged with a trunk of each pile segment engaging the head of an adjacent pile segment; wherein the area of a cross-section through the head of each pile segment and normal to the longitudinal centerline of the throughbore of the pile segment is greater than the area of a cross-section through the trunk of the pile segment and normal to the centerline; and wherein the lower surface is configured for bearing load to the head first surface of a lower adjacent pile segment.