Rehabilitation Challenges in the Las Vegas Casino Resort Area

Scope of Work
This rehabilitation project provided for the rehabilitation of approximately seven miles of existing sewer pipelines and about 117 associated manholes at locations within the Clark County Water Reclamation District’s system. Rehabilitation methods included cured-in-place pipe (CIPP) and cured-in-place manhole (CIPM) liners for existing 18- to 36-in. diameter, reinforced concrete pipe beneath Tropicana Avenue and Flamingo Road and associated manholes. Additional rehabilitation techniques included in the project were NeoPoxy liner end sealing and connection sealing and Top Hat connection liners.

Neopoxy End Seal & Connection Sealing
Neopoxy sealing was used on pipes greater than 18 in. in diameter to seal end points and connections of the liner. The applicator system carries the mixed epoxy resin into the host pipe. Once in the host pipe and facing the lateral connection, the epoxy material is applied uniformly on the exposed edges and at the base of the lateral connection. Using the edge of the trowel (1/16-in. thick), the material is pushed into the annular space, along the circumference of the lateral cut as much as the annular space will accept. The degree of acceptance is more on the order of 2 ft rather than 6 in. The material is forced into the annular space and fills irregular surfaces at the lateral connection to ensure water tightness.

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