Jack and Bore

Joint Trench Contractors - Jack and Bore Contractors

Jack and Bore (also known as horizontal auger boring) is a widely used trenchless pipe installation technique. It enables the installation of pipes under existing infrastructure such as roads, railroads, and sensitive environments without disturbing the surface. This method is especially advantageous for installing stormwater, drainage, sewer, and gravity pipes where maintaining precise alignment, grade, and % fall is crucial.

Joint Trench Contractors - Jack and Bore Companies

Key Features and Utilizations:

1. Horizontal Auger Boring Process:

  • Jack and Bore Overview:
    • Involves pushing (jacking) a casing pipe into the ground while simultaneously removing soil using a rotating auger within the casing.
    • The process occurs from a launch pit to a receiving pit.
    • Ideal for crossing roads, railroads, and areas where open excavation is impractical.

2. Trenchless Construction:

  • Advantages:
    • Minimizes surface disruption.
    • Reduces traffic delays and environmental impact.
    • Preferred for urban and densely populated areas where excavation would be costly or disruptive.

3. Stormwater and Drainage Applications:

  • Stormwater and drainage systems require precise slope (% fall) to ensure proper flow and prevent stagnation.
  • Jack and Bore ensures the pipe is installed “on grade,” maintaining the required fall.

4. Sewer and Gravity Pipe Installation:

  • Gravity systems rely on a constant slope to allow natural flow.
  • The precision of Jack and Bore allows for installation “on line” and “on grade,” meeting stringent municipal and environmental regulations.

5. Infrastructure Crossings:

  • Under Roads and Railroads:
    • Used for installing pipes without damaging or interrupting existing roadways or rail systems.
    • Complies with Department of Transportation (DOT) and railroad standards.
  • Municipal and Government Projects:
    • Common in public works projects for water, sewer, and drainage systems.
    • Adheres to government regulations for minimal surface impact and long-term reliability.

6. Pipe Material Compatibility:

  • Suitable for a variety of pipe materials (steel, concrete, PVC, HDPE) depending on the project’s requirements.

7. Alignment and Grade Control:

  • Modern Jack and Bore methods use advanced equipment like laser guidance systems to maintain precise alignment and grade, ensuring effective system performance over time.

Applications in Specific Environments:

  • Municipal: Installing utility lines for cities and towns while avoiding traffic disruptions.
  • Government Projects: Adhering to environmental policies and long-term infrastructure plans.
  • Private Sector: Useful in industrial projects where land excavation is not an option.

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Summary:

Jack and Bore is an essential method for trenchless pipe installation, especially in applications requiring precise grades and alignment. Its ability to minimize surface disturbance makes it ideal for urban, municipal, and government projects. Whether crossing under a busy highway, railroad, or municipal corridor, this method ensures durable, efficient pipe installation tailored to the needs of stormwater, drainage, sewer, and gravity flow systems.