Method and apparatus for raising and supporting a foundation

Details Method and apparatus for raising and supporting a foundation Method and apparatus for raising and supporting a foundation

1988-09-14

1990-03-06

Corbin, David H.

Hydraulic and earth engineering

Foundation

Underpinning

405233, E02D 2748

Patent

active

049061402

ABSTRACT:
A method and apparatus for raising and supporting a foundation where a hole is excavated beneath the foundation, one or more pipes are driven into the earth at diverging angles to form a piling, and a jack is placed in the hole above the piling and beneath the foundation. A self-hardening fluid is forced into the jack to raise the foundation. A jack is created from a pair of hollow cylinders, each having a single closed end, and slidably engaged open end to open end for vertical movement when a self-hardening fluid is forced through an opening formed in one of the cylinders. The jack may be formed of an open-top cylinder having a concrete piston formed inside that is raised by pumping grout through an opening in the cylinder and into a void under the piston.

REFERENCES:
patent: 3796055 (1974-03-01), Mahony
patent: 4092832 (1978-06-01), Mattson
patent: 4185940 (1980-01-01), Spies
patent: 4255071 (1981-03-01), Koppers et al.
patent: 4338047 (1982-07-01), David
patent: 4548526 (1985-10-01), Bullivant

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