Horizontal directional drilling (HDD)
What Does Horizontal Directional Drilling (HDD) Mean? Horizontal directional drilling (HDD) is a trenchless construction method used to install pipes underground without disturbing the ground surface. The drill is launched from one end of the designed bore path and retrieved at the other end, and except for the launch and retrieving spaces above ground, the entire process takes place underground, out of sight. HDD has become a choice alternative to conventional pipe-laying methods that require Read more…