The Evolution of Cured-In-Place Pipe

Posted by Katie Breeden on Jan 2, 2019 11:42:00 AM

Originally called “insitu form,” meaning “form in place,” cured-in-place pipe (CIPP) liners were developed in 1971 by Eric Wood in London, England. Prior to that, trenchless technology methods were limited to sliplining or grouting techniques. But those methods were less feasible: grout is a short-lived solution that is expensive to apply, and sliplining also requires grouting, a measure of trenching and results in significant diameter loss. Wood recognized the opportunity to improve rehabilitation efforts with liners that were cured directly inside the pipe, which led to the invention of CIPP liners. CIPP repairs the damaged pipe with a liner that, essentially, becomes a new, jointless pipe within a pipe. Wood successfully executed the first CIPP repair by pulling a felt liner impregnated with polyester resin through the pipe and finishing it with an ambient cure.

Read More

Topics: Trenchless Rehab, Sewer Rehabilitation

Repairing Service Connections

Posted by Nicole Lygo on Dec 20, 2018 11:50:27 AM

Within a sewer main, one of the largest sources of infiltration is at service connections. In areas with older sewer systems, construction requirements and methods were less concerned with tight seals and durability. During the first half of the 20th century, hammer taps were not uncommon. (For the uninitiated, a hammer tap, commonly found with vitrified clay pipes, involves using a hammer to smash a hole in the main to accommodate the lateral.) Gaps may have been filled with grout, but less conscientious workers may have also used miscellaneous items such as flattened tin cans or scraps of metal. Modern construction methods are significantly more precise and less leak-prone, but the service connection is still particularly susceptible to groundwater infiltration and many older connections remain in use.

Read More

Topics: Sewer Infrastructure, Trenchless Rehab, Sewer Rehabilitation

The Cost of Expansion

Posted by Nicole Lygo on Oct 31, 2018 6:40:52 PM

With the possibility of more federal investment in infrastructure on the horizon, many municipal contractors are looking to increase their capabilities. American wastewater systems are rapidly degrading, so rehabilitation is one of the larger areas of growth. Depending on what type of work your business already offers, some rehabilitation methods may be easier to get into than others. For spot (point) repairs, the most popular options are CIPP spot liners (generally under four feet), mechanical point repair sleeves and grout. Each method has its strengths and weaknesses as a repair solution, and each one has variable costs in terms of initial capital and maintenance cost. Getting an idea of what different methods can cost may give you a starting point for choosing the best option for your business.

Read More

Topics: Trenchless Rehab, Sewer Rehabilitation, Point Repair, Quick-Lock

Grout is Out!

Posted by Katie Breeden on Sep 26, 2018 1:03:54 PM

When choosing the proper pipeline rehabilitation technique, repair teams need an effective and lasting solution. Trenchless or no-dig technologies are preferable to high-cost, high-risk trenching alternatives whenever possible, as they save resources and cause minimal disturbance during installation. Yet while all trenchless solutions bring these benefits, some prove to be more practical than others.

Read More

Topics: Inflow and Infiltration, Quick-Lock, Trenchless Rehab, Sewer Rehabilitation, Product Features

Making Mechanical Point Repair Easy

Posted by Katie Breeden on Sep 12, 2018 1:41:15 PM

As the name suggests, Quick-Lock mechanical point repair sleeves solve pipe rehabilitation problems safely, reliably and quickly. Point repair sleeves address common pipeline concerns like infiltration, circumferential and longitudinal cracks, holes and offset joints, but without the lengthy time needed for CIPP and grout methods. Sleeves can also be installed serially when appropriate.

Read More

Topics: Trenchless Rehab, Sewer Rehabilitation, Point Repair, Quick-Lock

Bit by Bit: Why Cutter Bits Matter

Posted by Katie Breeden on Aug 17, 2018 2:12:40 PM

You wouldn’t cure CIPP with a hair dryer. So why would you reinstate services with the wrong bit? Different cutter bits provide operators with the versatility to work on a variety of pipeline rehab projects. Available in a range of shapes and sizes, each cutter bit is designed for a specific use. Even though many operators end up relying on a select few bits, knowing the various cutter bits’ purposes can increase the quality of rehab, productivity of operators and lifetime of the cutter.

Read More

Topics: Training, Sewer Cutters, Sewer Rehabilitation

Sewer Rehab Cutting Done Right

Posted by Venay Sehgal Bhatia on Jun 9, 2017 12:56:50 PM

Sewer rehabilitation cutters are used to reinstate lateral connections post-lining, and for other functions like CIPP preparation (grinding away protruding taps, smoothing offsets and joints) and repairing liner defects. Even the most advanced lateral and mainline rehabilitation and reinstatement cutters can’t guarantee a precision cut without the operator choosing the right cutter bit for the job at hand.

Read More

Topics: Sewer Rehabilitation, Resources, Sewer Cutters

About PRT

Pipeline Renewal Technologies delivers innovation to processes ranging from pipe point repair to relining and lateral reinstatement. Cutting edge technology, combined with dependability and support, have made us the industry's partner of choice.

Recent Posts