1. ASTM—American Society for Testing and Materials International –is a standards organization that develops and publishes voluntary consensus technical international standards for a wide range of materials, products, systems and services.
2. High Density Polyethylene Pipe (HDPE)—is a type of flexible plastic pipe used to transfer fluids and gases. It is often employed for replacing aging concrete or steel main pipelines.
3. Hydraulic Moling Device—a pneumatically-driven machine that forces through soil along the path of the pipe for trenchless replacement of small-diameter pipes.
4. Louisiana One Call—a toll free number that allows a caller to simultaneously notify many underground utility operators or facilities of the caller’s intent to dig in a certain area.
5. Moling—a trenchless construction technique that uses a specialized tool called a "mole" to create a borehole under the ground, typically for installing pipes, cables, or other utilities.
6. Pipe Bursting—a trenchless pipe replacement method where an existing pipe is broken by brittle fracture or by splitting, using an internal, mechanically applied force by a bursting tool.
7. Pneumatic Hammer—a hand tool used to carve in stone, and to break or cut metal objects.

8. Sag Elimination Pit—is a specialized excavation used to fix sagging pipes, typically in sewer systems.

   1. Standard Dimension Ratio (SDR)—a measure used in the pipe industry to indicate the relationship between a pipe's outer diameter and its wall thickness.

   2. 1. The permittee may use one of the following methods for pipe bursting:

      1. a. a hydraulic moling device or pneumatic hammer

         1. i. The pneumatic hammer shall be the smallest diameter necessary to break out the old pipe;
         2. ii. The use of oversized hammers is prohibited.
         3. iii. A hydraulic winch may be used to aid the forward progress of the moling device.

      2. b. a modified boring knife with a flared plug that implodes and breaks the existing sewer pipe;

         1. i. A hydraulic winch may be used to aid the forward progress of the boring knife.
      3. c. Replacement pipe may be pulled or pushed into place using hydraulic force when the replacement pipe is the same size as, or up to two sizes larger than, the existing pipe.

Authority Note

AUTHORITY NOTE: Promulgated in accordance with R.S. 48:381, et seq.

Historical Note

HISTORICAL NOTE: Promulgated by the Department of Transportation and Development, Office of Highways/Engineering, LR 31:105 (January 2005), amended by the Department of Transportation and Development, Office of General Counsel, LR 51:1884 (November 2025).