Horizontal Directional Drilling commonly referred to as HDD is a trenchless method of installing underground pipelines such as water lines, sleeves, sewer lines, fiber optic sleeves, gas lines and storm water conduits known as the product pipe.

When compared to open excavations the trenchless method of HDD minimizes the amount of excavations needed to install new infrastructure, during the HDD works only a launch pit and receive pit is required.

The launch pit is used as a working pit in order to attach the drill head and various back reamers and finally to launch and pull the new product pipe through to the reception pit. The reception pit is also used as a working pit to detach the drill head and various back reamers.

The pipe product used is recommended to be HDPE (High Density Poly Ethylene) due to its flexibility, strength and durability.

Pipe cracking/bursting is a method for trenchless replacement of worn out and undersized gas, water and sewer pipes. With pipe bursting an existing pipe is replaced size-for-size or up-sized with a new pipe HDPE (High Density Polyethylene) in the same location. Pipe bursting by means of static pull, fractures a pipe and displaces the fragments outwards while a new pipe is drawn in to replace the old pipe.