CIPP Lining Methods and Projects

CIPP Lining Methods and Projects

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Pre-impregnated liner saves time

Problem

The Louisville and Jefferson County Metropolitan Sewer District in Louisville, Ky., needed to rehabilitate 150 feet of 8-inch steel sewer pipe without disturbing the newly renovated wastewater treatment plant and underground utilities. The general contractor was on a tight schedule to complete the project.

Solution

A subcontractor installed a Pre-Wet-Out liner from Flow-Liner. The liner arrived impregnated with resin and steam-cured in less than three hours.

Result

The project engineer stated, "We were very impressed and pleased with the installation, which saved us from excavating the pipe. We would certainly use the product for future projects." 800/348-0020; www.flow-liner.com

Cured-in-place liner rehabilitates culvert

Problem

Five feet of missing invert in four 80-inch oval culverts under a busy two-lane highway in San Antonio, Texas, threatened its integrity. Open-cutting to replace the pipes would close the road for months and cost the city hundreds of thousands of dollars.

Solution

To rehabilitate the culverts, the city chose the Poly-Triplex liner system, which uses 116 ounces per square yard of woven roving fiberglass and epoxy resins. Public Works crews grouted the pipes, then the liner was impregnated on-site, pulled through each structure, inflated with an internal bladder, and cured in place with air pressure and steam.

Result

The rehabilitation was completed in two weeks without disrupting traffic. The city saved money and time. 850/547-9999; www.poly-triplex.com

Lateral lining system feeds continuous lengths

Problem

Aging wastewater lines at the Smithsonian Institution in Washington, D.C., needed rehabilitation, but replacement wasn't an option due to the disruption it would cause. Many lines had limited access or ran through attics and museum display areas.

Solution

The Quik Shot lateral lining system from Quik Lining Systems fit in the small accessible areas. Technicians working after the museum closed for the day impregnated the liner as it came off the roll, fed it through the calibration roller, and loaded it into the inversion unit in one operation.

Result

The lines were rehabilitated without damaging the priceless exhibits. 714/296-5262; www.quiklining.com



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