Carter Street Culvert Rehabilitation

摘要

This paper will discuss the design methodology and multi-product solution used to address a deteriorating round corrugated metal storm sewer culvert. The existing, Culvert Street culvert had been severely compromised due to overloading from years of piling foundry sand from a nearby site, exceeding the designed height of cover anticipated for the original pipe. The accepted proposal included a two product solution that would address not only the overloading, structural condition but the structural issue caused by raw sewage leaking into the storm pipe from a cracked sewer buried below the culvert.With over 50’ of cover on the pipe at its highest point, the design team determined that a trenchless rehabilitation method would be most efficient and cost-effective. Ultimately, 320 linear feet of steel reinforced polyethylene (SRPE) liner pipe was sliplined into both ends of the culvert with a segment of 2-flange Tunnel Liner Plate (TLP) used in the middle area where the greatest deflection and highest fill occurred. The invert of the TLP was lined with concrete to help the hydraulic efficiency of the culvert and make the transitions smoother from end to end.