Preparation: To begin, a small access hole is created at one end of the existing pipe, typically where it connects to the mainline or a sewer junction.

Bursting Head: A specially designed bursting head, often made of hardened steel, is attached to a cable or rod. This bursting head is slightly larger in diameter than the existing pipe but smaller than the replacement pipe.

Pulling the Replacement Pipe: The bursting head is then pulled through the old pipe. As it travels along, it breaks apart the existing pipe, pushing the fragments into the surrounding soil.

Replacement Pipe Installation: Simultaneously, a new pipe, typically made of durable materials like HDPE (high-density polyethylene), is attached to the back of the bursting head. As the bursting head advances, it pulls the new pipe into place.

Sealing and Connection: Once the process is complete, the new pipe is firmly in place and connected to the existing plumbing system. Any necessary joints are sealed to prevent leaks.