Sewer line bellies are a common problem that tin can create aggravating sewer pipe problems for property owners. A sag in a sewer pipe will eventually lead to continuing water and sediment collecting in the middle of the line, which in turn tin lead to erosion, blockages, and a major fill-in for the homeowner.

What Is a Abdomen in a Sewer Pipe?

Sewer line bellies aresags orlow spots in sewer lines. A normal sewer lateral (seen beneath) has a slope that uses gravity to assistance regulate the menses. A bellied sewer line interferes with the normal menstruation of waste water through the pipe, leading to backups and other problems considering the h2o and sediment collects in the belly.

Sewer-Belly-Diagram_normal-sewerline-vs-belly_pipe-spy

What Causes Sewer Bellies?

Poor planning and bad installations are often the root cause of sewer line bellies, asproper bedding compaction,good materials andcorrect slope are the most of import factors needed to preclude the trouble. Nevertheless, natural occurrences like major tree roots, earthquakes, sunday or heat, rain, and fifty-fifty cold weather fluctuations tin can pb to the shifts in the soil that eventually cause bellies.

sewer-line-belly-diagram-tree-roots_pipe-spy

To prevent bellies, the showtime step is to install plumbing with proper bedding. If the correct material (larger course gravel and sand) is not used under the pipe, so information technology may eventually settle lower into the ground in some sections and a belly volition form.

A sewer line must also have the correct gradient in order to employ gravity to its advantage when moving waste away from the home or building. A trenchless professional will use the all-time tools of the trade (such every bit video cameras and locator wands) to ensure proper gradient in a plumbing installation thereby preventing excess build-up.

In some cases, unstable ground may cause bellies, too. Fifty-fifty sewer lines that have been installed with the appropriate support in place may sag if the world below begins to shift.

How Can You Diagnose the Problem?

Sewer pipe bellies should be diagnosed by plumbers using the most accurate video inspecting technology. A professional sewer camera inspection will allow the service technician to push a video camera through the piping, giving you a close look at the entire sewer lateral and allowing the plumbing team to accurately place the issue. Even gradient issues can be detected at this preliminary stage of the process.

Sewer Belly vs. Channeling

Sometimes a trouble may be misdiagnosed as a belly when the real event is reallysewer channeling. Channeling occurs when the pipe itself begins to buckle in sections due to erosion or a change in the weight on the pipe due to shifting earth. When a pipe buckles like this it tin can interrupt good menstruation and create more blockage and build upward (see below).

Orangeburg-sewer-line-Channeling-Collapse-example_Pipe-Spy

Channeling is a common result with a type of sewer line calledOrangeburg. Orangeburg piping was used in some jurisdictions betwixt about 1945 and 1972. The problem with this textile is that it is primarily made of tar paper, so it had a tendency to buckle equally information technology got older. Later about 30 years, flattening and decay could pb to a channel. Fortunately for those of u.s. in the Northern California, Orangeburg was more prominent in the eastern states—while newer developments here used mainly bandage iron, clay and (later in the lx's and lxx'south) plastic.

How to Repair Bellied Sewer Pipes

Sewer-Belly-Rehab_Open-Trench_Pipe-Spy

Each case is different, so in that location is no magic correction technique when it comes to a belly in your sewer lateral.

While we are experts in the trenchless pipe bursting repair method, we do not always advise that a trenchless replacement be the solution for a belly rehab. Often, our team will utilisean open trench to arroyo the trouble surface area in lodge to build and make full the basis underneath the sagging line. Once filled, we would strengthen and reinforce joints, fill in the remaining space, encompass the area with the proper materials and compact to code.

Because information technology can be a lower cost solution to sewer repairs, trenchless pipe lining (CIPP) can be an option offered for some areas of pipe replacement—but this method will non correct the problem of bellies in the line. While Pipe Spy does non currently offer this option for service, nosotros know that CIPP or "sideslip lining" tin be a challenge to install as procurement of the proper permitting for this trenchless method in the Due east Bay is often denied. CIPP is typically only approved in boggling cases when at that place are no other (safer) alternatives. Chemicals used to cure the materials in the CIPP method can be toxic and harmful to both the wastewater system and local groundwater sources. CIPP extends the life of the existing sewer lateral by using the existing pipe for structural integrity. If that integrity is already eroded or compromised, lining it won't assistance solve the problem. So if your sewer professional is using this method, exist certain to ask questions and check that the proper permits were received for the piece of work.

Sewer-Belly-Repair-Photo_Pipe-Spy

Trust the Experts

If you're experiencing the symptoms of a sewer abdomen, or you've already confirmed the problem and need to detect plumbers you tin trust, contact our squad. We are the Due east Bay's trusted experts in trenchless sewer line replacement, camera inspections, repair and maintenance, and more.

Contact our team to discuss your project and request more information.