Force Main Rehabilitation Program for North Charleston Sewer District

The North Charleston Sewer District initiated a program in 2021 to rehabilitate its largest force mains with cured-in-place pipe (CIPP) methodology. The force mains were associated with their regional pump stations: Ingleside, Northwoods, Turkey Creek, and Noisette. The oldest force main (FM), Noisette, was constructed in the 1960s and has exceeded its useful service life. The project was bid in January of 2022. The preconstruction conference was conducted in late April 2022, but the commencement of construction was delayed until the end of October 2022, due to long delivery times for pipes, valves, fittings, and other materials. The rehabilitation of the Northwoods, Turkey Creek, and Noisette FMs is complete. The Ingleside rehabilitation should be completed by the end of 2024. This case study focuses on the interesting, unique challenges met during the project.