Apparatus for lifting structures

Details Apparatus for lifting structures Apparatus for lifting structures

1987-11-25

1989-08-08

Corbin, David H.

Hydraulic and earth engineering

Foundation

Underpinning

405232, E02D 2748

Patent

active

048547824

ABSTRACT:
An apparatus for lifting structure is provided which includes a pier and a shoe attached to the base of a structure. A sleeve, which acts as a means to guide the shoe and support the shoe on the pier, is placed on the pier and is adapted to mate with the shoe. In order to lift the structure, a lift bracket is attached to the shoe and a hydraulic ram or jack is inserted between the top of the sleeve and the bottom of the lift bracket. After the ram is extended to raise the structure to the desired level, pins are inserted through the shoe and shims inserted between the laterally extending plates of the sleeve and the pins driven through the shoe in order to permanently support the structure. After insertion of these permanent supports, the hydraulic ram and lift bracket may be removed and reused at a different site.

REFERENCES:
patent: 3685301 (1972-08-01), Heacox
patent: 3796055 (1974-03-01), Mahony
patent: 3902326 (1975-09-01), Langenbach Jr.
patent: 4070867 (1978-06-01), Cassidy
patent: 4634319 (1987-01-01), May
patent: 4678373 (1987-07-01), Langenbach
Undated Literature Articles Entitled: "The Magnum Pier" and The Slab Jack System.

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