Manhole Replacement
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Manhole Replacement


The City of Larned contacted UMC upon discovery of a collapsed sanitary sewer manhole. Due to high levels of H²S gas, the concrete manhole had been corroded from the inside and the surrounding soil pressure caused a collapse. UMC was hired to stabilize the existing manhole while a new precast concrete manhole was manufactured. Once the new manhole was delivered on site, UMC managed the bypass pumping operation and the installation of the new manhole. The new manhole was coated with 100% solids epoxy and an inside drop was installed to prevent further corrosion caused by sewer gases.


Location: Larned, KS

Capability: UTILITIES