Horizontal Directional Drilling is a trenchless method used to install underground utilities such as pipelines, cables, or conduits without the need for large, disruptive excavation. HDD allows for the installation of these utilities in a horizontal direction, often beneath obstacles like roads, rivers, or populated areas, minimizing surface disruption.

Civil Engineering refers to the process of building, assembling, or installing infrastructure, buildings, or other physical structures. It encompasses a wide range of activities, from the initial planning stages through to the completion of the project, and involves various trades, skills, equipment, and materials.