Patent ID: 6083589
Filing Date: 2000-07-04
Classification: E04C,E04H,Y10T

Abstract:
A filled structure characterized by the combination of high compressive and tensile strength to allow a high bending load, the filled structure comprising:a fiber reinforced resinous hollow structure having a tensile strength of at least 30,000 psi, said hollow structure having first and second ends, an inside surface forming a boundary which encloses a space, and an outside surface, at least a portion of said outside surface of at least one of said ends having a roughened portion sufficient to provide increased frictional resistance with the ground when said one end is driven into the ground, anda hard core within said space enclosed by the hollow structure the, hard core having a density of at least 35 pounds per cubic foot and a compressive strength of at least 1500 psi, the hard core being formed from a mixture of particulate cementitious material and liquid.