“The students follow me around and then see the drill rigs and ancillary equipment, such as recycling and locating equipment, as well as the tooling that’s involved. The field class involved Ariaratnam lecturing to students while walking throughout the outdoor exhibition to interact with products and technologies, as well as speak to various vendor experts at the booths. You can also use it to cross a variety of obstacles, such as various bodies of water, important ecological areas such as wetlands, and the built environment, with minimal disruption to the surface area.Īt The Utility Expo 2021, Ariaratnam taught a field educational class on advanced HDD, called “Advanced HDD: Challenges and Good Practices for a Successful Installation”. “You can use it to install water, sewer, oil, electric, natural gas, cable, and telecommunications lines. “HDD is a very versatile technology,” says “Ariaratnam. Pull the pipeline through the enlarged hole until it reaches the entry side. Enlarging the pilot hole with a back reamer to facilitate pipe installationģ. Drilling a small diameter pilot hole along an underground path from one surface point to another.Ģ. The HDD process typically includes three steps:ġ. “You can cross roads and bodies of water and neighborhoods with minimal disruption to vegetation and the surrounding area.” Ariaratnam, Professor & Beavers-Ames Chair in Heavy Construction at Arizona State University. The benefits of HDD are especially pronounced in urban environments,” says Dr. Trenchless technologies, including the use of horizontal directional drills (HDDs), minimize disruption to the public and the environment in which the utility is being installed. Drilling saves time, money, and the environment It can be a destructive and costly process. And then, all of that has to be replaced and repaired-the earth, the road, the sidewalk-anything that got ripped up. If the trench path is in an urban setting, it often means ripping up roads and sidewalks, which disrupts people’s movements. That entire area is potentially a safety risk to workers and possibly the public. Installing an underground utility traditionally and still, today involves excavating a trench as deep as the utility and wide enough to fit a trench box, which translates into removing several cubic yards of earth to install a utility that is often only a few inches in diameter. Utilities buried underground pose the least disruption to the public however, installing these utilities can be a very disruptive process.
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