Patent ID: 6988855

Claim:
A method for installation of a pier in a soil matrix comprising, in combination, the steps of: a) positioning a hollow tube having a longitudinal dimension and a lateral dimension in a soil matrix, said hollow tube including a hollow core and an open lower end, said hollow tube core being thereby filled with said soil matrix; b) removing the soil matrix from within the hollow core; c) inserting aggregate materials into the hollow core; d) moving the hollow tube an incremental step from the soil matrix and simultaneously imparting lateral forces and longitudinal forces on the aggregate materials discharged from the open end of the hollow tube by such hollow tube movement to thereby form a compacted lift as the hollow tube is removed in said incremental step from the soil matrix; e) placing a separate mechanical member in the hollow core extending longitudinally in the hollow tube and moving the mechanical member longitudinally and laterally to effect compaction of the aggregate materials discharged from the hollow core; and f) repeating step c), d) and e).