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US 5,575,593 AGranted
Method and apparatus for installing a helical pier with pressurized grouting
AssigneeAtlas Systems, Inc.
InventorDavid B. Raaf
Life of this patent
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AssigneeAtlas Systems, Inc.
InventorDavid B. Raaf
Estimating the term…
A method and apparatus used to increase the stiffness characteristic of soil to improve its ability to support a structures and to provide a tie-back anchoring force. The apparatus includes an anchor having helixes thereon is rotated into the ground. The helical anchor is hollow and includes multiple perforated holes along its length and about its perimeter. Once, the anchor is drilled into the ground, pressurized grout is injected therein. The grout is forced through the helical anchor and out through the perforated holes. The grout fills any voids along the sides of the anchor and stiffens the surrounding soil. Once the grout hardens, it may be used in a tie-back application or to support new and old construction or the like. The grout surrounding the anchor increases its lateral support and prevents deflection thereof.
A method for installing a pier column, having a hollow body with perforations along a length thereof, which is affixed to a structure to support said structure, said pier column interacting with a surrounding effective soil region to resist lateral and longitudinal movement by said structure, said method comprising the steps of:
An apparatus for installing a pier column which is affixed to a structure to anchor and support said structure, said pier column interacting with a surrounding effective soil region to resist movement by said structure in any direction, said apparatus comprising:
Dependencies are inferred from the claim text.