What are the benefits of pipe bursting?
Pipe bursting has several advantages over open-cut trenching and other trenchless rehabilitation methods:
Pipe bursting allows for replacement of pipes without disturbing surface structures.
Potential problems with existing pipes are minimized because pipe-bursting methods follow the existing pipe path.
For smaller sizes of pipe, pipe bursting is the only trenchless technology that can be used to upsize the existing pipe.
Because it is trenchless, excavation is minimized, which lessens effects on existing landscaping and structures. The bursting heads on the piercing tool can be removed at the end of the line so that the tools may be removed through the new line. This eliminates the need for an exit pit in some instances.
Pipe bursting reduces the amount of site restoration required.
Pipe lining was first put into practice in the United Kingdom in the early 1970s. The process involves inserting a resin-saturated flexible lining into the existing sewer. Air or water under pressure is forced into the tube, which turns the lining inside out and causes it to fit tightly to the existing sewer walls. Hot air or water is circulated throughout the tube to harden the resin, completing the curing process. When the curing process is completed, a new pipe has been created that is free of cracks and holes that allow rainwater and roots to enter the sewer and cause operational problems such as stoppages and overflows.
What are the benefits of Pipe Lining?
Pipe Lining has many advantages, including:
Pipe Lining allows for replacement of pipes without disturbing surface structures or other utilities.
It produces a seamless, jointless pipe lining with minimal reduction of the original pipe diameter and leaves no voids to be grouted after the liner is installed.
Though the liner system reduces pipe size by the thickness of the liner, the smooth interior of the liner reduces friction, which increases flow capacity.
Private service connections are reconnected without excavation. A dimple is formed where the lining passes a service connection. Close circuit TV easily locates the dimple and cuts out the lining using remote techniques.
The finished product has a 50-year design life, the same as that of a brand new pipe.
CAWD reports all sanitary sewer overflows (SSOs) electronically to the California Integrated Water Quality System (CIWQS). The electronic SSO data, as well as information regarding regulatory actions, is available at: www.waterboards.ca.gov/waterissues/programs/ciwgs/publicreports.shtml