In early 2017, the Southwest Wet-Weather Control Facility project, completed with RJN Group, Inc. as the primary engineering consultant; the City of Elmhurst as the managing agency; and Boller Construction, Inc. and Archon Construction Company as the contractors, earned recognition as a Public Works Project of the Year in the Structural: $5 Million to < $25 Million Category of the Suburban Branch of the APWA Professional Awards.
The Southwest Wet-Weather Control Facility (SWWCF), serving the southwest area of the City of Elmhurst, is a sophisticated wet-weather flow control system centered around a dry- and wet-weather pumping station that directs flow based on measured flow levels to a dry-weather force main, a wet-weather force main, and a 2.2 million gallon (MG) storage tank located at the City’s Water Reclamation Facility (WRF). The primary purpose of the SWWCF is to provide protection to property owners through additional wet-weather capacity, mitigating recurring basement backup issues.
As part of this project, RJN engineers needed to design a wet-weather force main. After assessing the area where this force main would be built, RJN engineers concluded that the material chosen for the pipe needed to be as light as possible with a smaller profile that would result in less excess material being reamed. After initially considering fusible PVC, RJN engineers determined that a restrained joint PVC pipe would be the perfect pipe for this installation.
Unfortunately, when this design was first developed, North American Pipe Corporation didn’t make the Certa-Lok PVC pressure pipe in an 18-inch size, which was required for this particular force main. RJN reached out to the manufacturer to request this size be made available, but the manufacturer said they had no plans to place an 18-inch Certa-Lok PVC pressure pipe into production.
In a timely change of events, North American Pipe Corporation announced shortly before the SWWCF project was bid that they would be manufacturing the 18-inch Certa-Lok restrained joint pipe, just in time for construction. This made the Southwest Wet-Weather Control Facility in Elmhurst the first project ever to receive the 18-inch Certa-Lok restrained joint pipe from the factory.