Method and apparatus for forming piles in-situ

Details Method and apparatus for forming piles in-situ Method and apparatus for forming piles in-situ

1995-12-26

1998-01-13

Graysay, Tamara L.

Hydraulic and earth engineering

Foundation

Columnar structure

405237, 405239, 405244, 405248, 405249, E02D 534, E02D 538, E02D 574

Patent

active

057071802

ABSTRACT:
The invention provides a method for making piles and apparatus for practising the method. The piles may be used to support the foundation of a structure, such as a building. The method draws a soil displacer on a shaft down through a body of soil by turning a screw at the lower end of the shaft. The soil displacer forces soil out of a cylindrical region around the shaft. The cylindrical region is filled with grout to encapsulate and strengthen the shaft. The grout may be fed by gravity from a bath of grout around the shaft. The soil displacer has a diameter smaller than a diameter of the screw and may be a disk extending in a plane generally perpendicular to the shaft.

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Chance Helical Pier System Brochure .COPYRGT. 1995.

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