When it comes to repairing your sewer line, there are several options available. You probably don’t want to do the work yourself, so technicians will offer one of several repair technology methods. These include several forms of trenchless technology, including pipe bursting, relining and curing in place, pull-in-place, inversion lining, and moling.
Modern Twists on a Traditional Method
Several of these methods, such as trenchless pipe repair, are faster and less expensive than older techniques. Trenchless technology, for example, eliminates the need to dig a deep trench around damaged pipes. Instead, workers dig a small hole at each end of the line. This technology isn’t really new; it was used by coal miners in the 1930s, but today the method has expanded in many areas of civil engineering, including repairing your sewer line.
Breaking Up Old Pipes
Pipe bursting, a specific form of trenchless repair, also requires a small opening at each end of the line. A heavy-duty cable is inserted through the line until it comes out the other end. At this point, a specialized head is attached. As the cable is pulled back through, the head breaks apart the existing pipe. This method is generally only used when the pipe cannot be saved.
Relining Damaged Pipes
Another trenchless method is used to quickly repair sections of a pipe. The use of a cured-in-place-pipe, or CIPP, leaves sewer lines stronger than they were original. The resulting liner seals cracks and other damages. A high-pressure stream of water may be used to clean out the old pipe and to seal the new lining. Pull-in-place lining repairs is a similar process that requires a fiberglass and resin liner. This liner is generally sealed with heat or with steam.
An inversion lining is a preventative option used on pipes that show minimal damage. The liner may be constructed from resin and a felt tube. The end result provides the sewer line with strength and durability.
Putting in New Pipes
The moling method requires the use of a powerful machine that drives a steel cylinder along the proposed path of a new pipeline. As the path is created, the pipe itself can be pushed through.