A classroom in a school became a poor learning environment when nasty sewer gases began to permeate the room due to a broken fitting and offset joint below the floor. The pipe was prohibitively expensive to fix because of its location 4 feet below the floor next to the building foundation. Revive Pipes saved the school $40,000 over other contractors quotes by installing a custom made Cured in Place Pipe (CIPP) structural liner in the shape of a six (6) inch by six (6) inch wye, sealing the sewer gases inside the sewer drain system.
Shifting in the earth below the school caused a six (6) inch vertical PVC pipe to push upwards into a wye fitting that was four (4) feet below the floor. The upwards force of the pipe split open a wide crack in the PVC fitting and the pipe partially dammed the sewage flow from the branch connection into the vertical drain pipe. In addition, the shifting pipes created an offset between the joint of the cleanout fitting in the floor and the first section of vertical pipe.
The large crack in the pipe allowed sewage water to freely flow into the earth around the pipe and foundation. This water flow further destabilised the soil around the pipe and exacerbated the problem of the wastewater pipes shifting. Allowing the system to continue to operate in this situation for long could compromise the building foundation.
A traditional demolish, excavate, replace and refinish repair would have been very costly given the proximity of the damaged pipe to buildings foundation. The repair would have included:
Consulting with a structural engineer to determine the proper procedure for supporting and protecting the building foundation while excavating
Erecting a hoarding to minimize dust while the repair is being completed
Saw cutting of the concrete floor
Excavation of a pit around the sewer pipe to be replaced
Replacement of the sewer pipe and branch connection
Replacement and compacting of the soil around the sewer pipe
Pouring new concrete slab
Finishing the flooring
Revive Pipes used a specialized robotic cutter to grind down the PVC pipe that was damming the branch connection. We then installed a custom made liner in the shape of a six (6) inch by six (6) inch wye by inserted it through the four (4) inch cleanout above. After the wye was repaired, Revive Pipes installed a structural liner over the offset joint immediately below the cleanout to fully seal the piping system. Our liners were installed using only two (2) existing cleanouts in the wastewater system and no excavations were required. Revive Pipes saved the school $40,000 off the quotes of other contractors to repair this broken and displaced PVC sewer pipe.
Revive Pipes can install Cured in Place Pipe (CIPP) structural liners in tee and wye fittings of with main branches as small as three (3) inches diameter and with lateral branches as small as two (2) inches diameter. We installed the six (6) inch Cured in Place Pipe (CIPP) through a four (4) inch cleanout that was offset by approximately one quarter (1/4) of the diameter, restricting the access point even further.
Health & Safety | Revive Pipe Restoration Inc is committed to health and safety and holds a Certificate of Recognition (COR) from the Alberta Construction Safety Association and is a Partner in Injury Reductions (PIR) with the Workers Compensation Board of Alberta (WCB). Our workers are trained in worksite health and safety, relevant OH&S legislation, Workplace Hazardous Materials Information System (WHMIS) and Revive Pipe Restoration Inc's Safe Work Practices (SWP) and Safe Job Procedures (SJP).
Our mission is to have all workers return home from work every day safe and in good health.
NuFlow Installer | Revive Pipes has been Nu Flow's exclusive Nu Drain, Cured in Place Pipe (CIPP) installer in Alberta for the better part of the past decade. The high profile sewer rehabilitation projects that we have completed inside of buildings in Edmonton and Calgary have forged Revive Pipes reputation as an elite installer in Nu Flow's worldwide network of licensees of the Nu Drain system.
Nu Flow has been a world leader in developing and manufacturing patented Cured in Place Pipe (CIPP) systems that are uniquely suited for rehabilitating wastewater systems inside of buildings. Sewer systems inside of buildings are significantly more complex than systems outside of buildings for many reasons including:
Smaller pipe diameter
Multiple bends in the pipe
Multiple branches of varying sizes connecting to the pipe being lined.
The area above and adjacent to the pipe is occupied by people living or working
Nu Flow developed a patented Cured in Place Pipe (CIPP) liner assembly that uses a pull-in-place (PIP) installation method unlike most Cured in Place Pipe (CIPP) assemblies that use an inversion installation method. The pull-in-place system used in conjunction with Nu Flow's patented Nu Drain system allows us to install liners in many situations without excavating floors or demolishing walls to create access points.
The Nu Flow, Nu Drain system has the flexibility to also be installed from a single access point in some situations when a second access point is not available. Nu Flow Cured in Place Pipe (CIPP) liners can be pushed into place in situations where Cured in Place Pipe (CIPP) inversion contractors would likely have to create an excavation point for their access. Access points that we can install Nu Flow Cured in Place Pipe (CIPP) liners from include cleanouts, roof vents, toilet closet flanges and manholes.
The Nu Flow system can also form around ninety (90) degree elbows and bends without stretching and thinning of the lining material in the outer radius of the liner. This characteristic ensures the structural integrity of Nu Flow's Nu Drain liner is maintained throughout the bend, unlike an inversion liner.
The pull-in-place (PIP) installation method allows Nu Flow liners to be accurately placed, often with an inch of accuracy in a sewer pipe system. Cured in Place Pipe (CIPP) inversion systems suffer from inaccuracies and uncertainty in where liners will terminate in the sewer pipe. Because of the stretching fabric used with inversion lining and the difficulty in measuring liner distances around bends, inversion liners will often terminate at an unintended spot in the sewer system. This can leave part of the sewer pipe unlined or the inversion liner could go too far and block a branch connection or travel into a main pipe, blocking the main sewer line. Revive Pipes uses Nu Flow's patented Nu Drain system in these situations to remove the uncertainty of where the liner will terminate and ensure the sewer pipe is lined properly.
Nu Flow Cured in Place Pipe (CIPP) liners can be used in point repairs that are hundreds of feet from an access point on either side of the section of sewer in need of repair. In situations where all of the pipe except for a small section is in good condition, an installation of a Nu Flow spot repair avoids disruptive excavation or demolition.
As the exclusive Nu Flow, Nu Drain licensee in Alberta for nearly the last decade, Revive Pipes has the experience and technical ability to install Nu Flow Cured in Place Pipe (CIPP) in complex sewer configurations inside of buildings.