A Successful CCCP Rehabilitation on Two 96-inch CMP Culverts: Fid-Bau Portal

A Successful CCCP Rehabilitation on Two 96-inch CMP Culverts

Nyirenda, Swirvine / Salazar, Steve / Sharman, Adam

In 2013, the City of Aurora engaged Wilson & Company Inc., Engineers and Architects (Wilson & Company) to conduct a comprehensive inspection and condition assessment of their stormwater Corrugated Metal Pipe (CMP) sewers. Approximately 41,000 LF of existing and abandoned CMP conduits,ranging in size from 12-inches to 120-inches in diameter, were evaluated and prioritized for rehabilitation or replacement. Wilson & Company completed an engineering report that included a summary of all CMP assessment findings, infrastructure evaluations, budgetary level cost estimates, priority rankings and recommendations for rehabilitation improvements. The report also specified final design recommendations for conduits that were deemed to be in eminent failure. Wilson& Company observed that a pair of 96-inch CMP pipes under a major arterial roadway, which Aurora’s Public Works Department had already de-rated for traffic-loading, were severely deteriorated. Wilson was commissioned to review applicable rehabilitation techniques that had minimal public impacts. The consultant recommended Centrifugally Cast Concrete Pipe (CCCP) as the repair method that would meet all the City’s objectives. This paper will discuss the development of the design for the CCCP, installation and lessons learned in the first CCCP rehabilitation project for Aurora Water.