The assignment was carried out as a subcontract for the client Implenia AS, and the method was used to avoid unnecessary excavation in the new county road through Kongsberg. The background for the project was the occurrence of leaks in the newly laid ductile water pipeline, which was constructed in connection with the establishment of the new road section.

The Norwegian Public Roads Administration (Statens veivesen) did not want to excavate the pipeline to locate the leaks. Therefore, a trenchless method using Die Draw was chosen.

Implenia chose this method because the pipe supplier, Hallingplast, guaranteed a minimum lifespan of 100 years as long as the installation and handling of the new pipes were done in accordance with regulations. Pipeliner also demonstrated that this method would provide the largest inner diameter in the pipe after installation.

The Die Draw method involves pulling the PE pipe through a funnel, known as a Die. Hence the name Die-Draw. The thin pipe is shrunk by 10-12 percent when pulled into the host pipe using a winch. Once the PE pipe is pulled through the host pipe, the pulling force from the winch is released, and the PE pipe will return to its approximately original dimensions. This results in a tightly fitted pipe inside the existing pipe, providing maximum inner diameter and optimal flow capacity.