What is Sewer Pipe Bursting?
Bursting and replacing a sewer pipe is a trenchless method used to replace damaged or deteriorating sewer lines without the need for extensive excavation. This technique is less disruptive to your property and can save you time and money compared to traditional excavation methods. Here’s a step-by-step guide on how a sewer pipe can be burst and replaced:
How pipe bursting is done:
Pipe Bursting Equipment Setup:
The contractor will set up the pipe bursting equipment, which typically includes a bursting head and a replacement pipe. The bursting head is a specialized tool that will be used to break the old pipe while pulling in the new one simultaneously.
Entry and Exit Pits:
Two access pits are excavated at specific points along the sewer line. The entry pit is where the bursting head and replacement pipe will be inserted, while the exit pit is where the old pipe fragments will be removed and the new pipe will emerge.
Pipe Bursting Process:
The bursting head is attached to a steel cable or rope and inserted into the old sewer pipe from the entry pit. Hydraulic or pneumatic equipment is used to pull the bursting head through the existing pipe. As it advances, it fractures the old pipe outward, creating space for the new pipe.
Replacement Pipe Installation:
Simultaneously with the bursting process, the replacement pipe is pulled into place behind the bursting head. The new pipe can be made of various materials, such as high-density polyethylene (HDPE) or PVC, depending on local building codes and your preferences.
Final Inspection:
Once the bursting process is complete, the contractor will conduct a final inspection using a video camera to ensure that the new pipe has been installed correctly and that there are no issues or blockages.
Sealing and Restoration:
The entry and exit pits are backfilled, and the surface is restored as closely as possible to its original condition. Any landscaping or hardscaping that was disturbed during the process is repaired or replaced.
Testing and Verification:
Before the project is considered complete, the sewer line may be tested to ensure proper flow and functionality. Local building codes may dictate specific testing requirements.
Documentation and Warranty:
The contractor should provide you with documentation of the work performed, including warranty information for the new sewer line. Be sure to keep these records for future reference.