Project Details

In recent years, the City of Sioux Falls has used Cured-In-Place-Pipe (CIPP) rehabilitations which can be installed with little or no excavation to repair severely deteriorated and aging sewer and storm water piping at critical locations. Several of the lines identified for repair presented unique challenges, including severely corroded cast-iron-pipe under buildings, deep sewers, sewers under railroad tracks or major city streets, and difficult to access pipes making typical open-cut construction challenging. Unique approaches for manhole rehabilitation were also required for several of these projects.

Project 1: This project included a section of 20” pipe that crosses over the Big Sioux River at Falls Park. This was a critical project because of the existing pipe condition and location: it needed to be replaced quickly with minimal disruption to the park. After cleaning and inspection with a robotic camera, a soft, resin-imbued felt liner was routed through existing pipes. Once the liner was in place, it was expanded and cured with steam or pressurized hot water. The result is a new, seamless pipe that will last for decades.

Project 2: This project included replacement of a 78” diameter concrete storm water pipe buried up to 30 feet deep beneath an arterial roadway. Repair of this pipe would have been costly due to the depth of excavation and pavement removal and replacement would have been significant both from a cost perspective and traffic impact. Banner evaluated several “no-dig” repair options for the City and recommended a CIPP liner because of its structural integrity and expected design life.