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ICUNJ has led the industry in implementing innovative solutions with our trenchless pipe bursting methods and technology. No two projects are the same when it comes to broken drain pipes, and pipe bursting repair, so our dedicated team of industry experts work with you to develop customized sewer line replacement solutions to meet the most challenging conditions.
Pipe Bursting
Pipe bursting is a method of replacing buried pipelines (such as sewer, water, or natural gas) without the need for a traditional open cut trenching. One or more pits are required to launch and receive the new pipe. Pipe bursting may also be used to expand pipeline carrying capacity by replacing smaller pipes with larger ones, or "upsizing." Extensive proving work by the gas and water industries has demonstrated the feasibility of upsizing sewer, gas and water mains and laterals.
An expanding device called an expander head, which may be either pneumatic or hydraulic is introduced into the defective pipeline through a launching pit. As it travels through the pipeline toward the receiving pit it breaks the pipe into many small pieces, pushing the pieces into the surrounding soil. New pipe is attached to the back of the expander head and is pulled simultaneously with the expander head until it reached the receiving pit. Both ends of the new pipe are connected to their respective existing pipe to close the system and service is restored.
A Hydraulic puller is set into a receiving pit at one end of the existing pipe to be replaced. A heavy cable is attached to an expander head on the other end of the line to be replaced. The cable is then fed through the existing pipe and attached to the hydraulic puller. The hydraulic puller then pulls the expander head with the new pipe attached to it through the existing line, introducing the new line simultaneously.
Advantages: Pipes of all types and sizes follow paths through buildings, under driveways, sidewalks, trees, bushes, lawns, road surfaces and many other costly improvements. Since the bursting method is performed underground and through the existing line to be replaced, costly surface improvements are left undisturbed. Conditions such as offset joints, collapse, cracks, separations and roots are eliminated. The newly installed seamless pipe is impervious to roots and eliminates fluid migration between pipe the environment. Its smooth inner surface reduces the effects of friction which enhances pipe performance. Lateral repairs are typically performed in one day, while large mains take longer. Since pipe introduced using the Bursting method travels along the existing pipe alignment, if the existing pipe has a sag/belly, the new line will mirror the existing condition. The bursting techniques can be used in conjunction with a piercing tool to run a new line underground.
Disadvantages: Pipe introduced using the Bursting method travels along the existing pipe alignment. If the existing pipe has a sag/belly the new line will mirror the condition. 
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Preventive measures list:
»Replace old pipes before problems occur
»Request camera inspection of main sewerline when purchasing property.
»Scheduling regular pipe inspections and cleaning
Methods to Eliminate Defects in Sewers
Pipe Bursting: Cured In Place Pipe (CIPP) lining:
Open Cut Construction Spot Repairs High Pressure Jetting Snaking
