What is trenchless technology construction?
Trenchless technology is a type of subsurface construction work that requires few trenches or no continuous trenches. It is a rapidly growing sector of the construction and civil engineering industry.
What is trenchless pipeline?
Basically, trenchless construction creates underground tunnels that are slightly larger than the line that is to be installed. The pipeline or conduit is then placed within these tunnels, while the surface remains unaffected.
What are the two most common trenchless sewer operations?
There are several methods of trenchless sewer replacement, but the two most common methods that Ehret Co. uses are slip lining and pipe bursting. Slip Lining — In this method, the new pipe is a smaller diameter and is slipped into the old pipe. Once the new pipe is in place, grout is filled into the space around it.
Which is the oldest trenchless method?
One of the oldest and most inexpensive trenchless technology methods is sliplining (Selvakumar et al., 2002). Sliplining involves pulling or pushing a new pipe of smaller diameter into an existing pipe and grouting the annular area between the pipes to prevent leakage and provide structural integrity.
What is trenchless equipment?
Trenchless Equipment sells high-quality trenchless equipment, including leak detection systems, pipe inspection systems and hydro-jetting equipment. We’re proud to be a global leader in trenchless equipment sales and repair, bringing more than 20 years of experience to the industry.
What is used for trenchless excavation?
Pipe bursting is an environmentally friendly and cost-effective alternative. Pipe Bursting offers an economical solution to repair damaged pipes. According to estimates, the pipe bursting method has become the most widely applied trenchless pipe replacement method with more than 31,000 miles rehabilitated worldwide.
What is HDD method?
Horizontal Directional Drilling (HDD) is a method of installing underground pipelines, cables and service conduit through trenchless methods. It involves the use of a directional drilling machine, and associated attachments, to accurately drill along the chosen bore path and back ream the required pipe.
What is CIPP lining?
Cured-in-Place-Pipe Lining (CIPP) is a trenchless method of sewer construction. It requires little or no digging and significantly less time to complete than other sewer repair methods. It is suitable for repairing both short and long runs of pipes that do not need to be upsized.
What kind of pipe is used for pipe bursting?
The most common type of pipe installed with pipe bursting, much like HDD, is overwhelmingly HDPE. However, advancements in other pipe types have made installations of those much more common.
Who invented trenchless technology?
Trenchless technology, the method of subsurface construction requiring little or no continuous trenching, began over 40 years ago. It was invented by Eric Wood. The first recorded tools to repair and replace underground pipelines came into service in the 1970s.