Trenchless drainage structure replacement
AssigneeHarr Technologies, LLC
InventorRobert E. Harr
Life of this patent
Estimating the term…
Abstract
Replacement drainage structures and methods for replacing drainage structures are disclosed. An example method includes driving a plurality of sections of a replacement drainage structure around a buried drainage structure to be replaced. At least a portion of the drainage structure to be replaced is positioned within the interior of a section of the replacement drainage structure. Portions of the drainage structure to be replaced are removed.
Claims20
A method for replacing a drainage structure located in a material, the method comprising:
- aligning a first section of a replacement drainage structure according to a line and grade of a drainage structure to be replaced, the replacement drainage structure having an interior cross-sectional dimension greater than an outer cross-sectional dimension of the drainage structure to be replaced;
- driving the first section into the material to be positioned substantially around the drainage structure to be replaced;
- aligning a second section of the replacement drainage structure to the first section;
- joining the second section to the first section;
- driving the second section into the material and thereby drive the first section further into the material;
- and
- removing a portion of the drainage structure to be replaced.
A method for replacing a drainage structure, the method comprising:
- positioning a first replacement drainage structure around a portion of a drainage structure to be replaced, the first replacement drainage structure having an interior diameter that is greater than an exterior diameter of the drainage structure to be replaced;
- positioning a second replacement drainage structure around a portion of the drainage structure to be replaced, the second replacement drainage structure having an interior diameter that is greater than the exterior diameter of the drainage structure to be replaced, and the second replacement drainage structure further having an exterior dimension that is less than the interior diameter of the first replacement drainage structure;
- and
- removing portions of the drainage structure to be replaced.
A method for replacing a drainage structure, the method comprising:
- driving a plurality of sections of a replacement drainage structure around a buried drainage structure to be replaced to position at least a portion of the drainage structure to be replaced within the interior of a section of the replacement drainage structure;
- and
- removing portions of the drainage structure to be replaced.
A replacement drainage structure, comprising:
- a plurality of joined pipe sections, each of the plurality of pipe sections joined while unburied to a previous pipe section having at least a buried portion.
Dependencies are inferred from the claim text.