There are many reasons a sewer line might need to be rehabilitated by installing a structural liner. The top three reasons for sewer pipe failure and sewer pipe stoppages and clogs are:
Channeling of Aging Cast Iron Pipes & Clay Pipe Cracks
Most residential and commercial sewer systems that were installed under the concrete slab, prior to the early 1970’s, were constructed with cast iron. The life span of cast iron pipe is 25-30 years. Over time, the bottom of the horizontal pipe “channels” away or literally disappears due to the flow of water through the ferrous cast iron pipe. The pipe channeling exposes the soil below the pipe, which leads to soil erosion creating voids below the original drainage system that can cause possible foundation settling of the structure above the piping system.
This erosion process along with the exposed jagged edges of the decaying cast iron pipe causes clogs, stoppages, and sewer pipe failure in residential homes, condominiums, and industrial properties. CLAY PIPE was not typically used under buildings and structures; instead it was installed under landscaped areas, asphalt roadways, and concrete parking areas. Long-term ground settling, tree roots, and water erosion/soil washout lead to clay pipe failure due to cracking, pipe separation, and soil/tree root intrusion.
Pipe Corrosion, Calcification and Scale
In addition to the channeling described above, part of the aging process of pipes includes corrosion, calcification, and scale build up. Many times high pressure water jetting will provide some temporary relief from drainage clogs and stoppages.
This is a short-term solution that will buy time till the pipe ultimately fails. The corrosion and scale are indications of how much of the interior thickness of the pipe is worn away. De-scaling the pipe literally makes the pipe thinner and eventually, over a short period of time, the continual use of high pressure water jetting will expose holes, cracks and separations that lead to TOTAL PIPE FAILURE AND COLLAPSE.
Tree Root Intrusion
If tree roots or any type of organic plant material is found to be the cause of a drainage pipe clog or stoppage, it usually indicates that there is a hole, crack, or separation in the pipe. This is true of any type of pipe that makes up the sewer drainage system.
ANY MOISTURE LEAK FROM A PVC, CAST IRON, OR CLAY drainage pipe will eventually ATTRACT root intrusion from surrounding plants. Tree roots commonly “travel” unbelievable distances, even under a building or structure, in their search for moisture.
The smallest hole, crack, or separation will allow roots the width of a human hair to “SEEK” out the source of water. These tiny roots will enter the pipe and literally grow inside the pipe, and as they grow they expand the hole or crack to allow larger/multiple roots to intrude. Given time, what starts out as a hair-sized root can end up growing in size to the width of a man’s arm.
In addition to creating sewer clogging root balls, these roots, if allowed to grow unchecked, can eventually cause the pipe to fail due to the root movement in and around the pipe.
The Sewer Pipe Lining Solution
Lining a sewer drainpipe involves the installation of an appropriately sized STRUCTUAL “sleeve” inside the pipe. The structural liner can be as short as two feet long for a tree root “spot repair” or as long as necessary to structurally line and rehabilitate a complete horizontal and vertical drainage system. After proper cleaning and prepping of the pipe the liner is installed and cured in place within 6 hours. There is NO INTRUSIVE DEOMOLITION OF WALLS OR TRENCHING OF CONCRETE AND LANDSCAPED AREAS. After the pipe is cured, the smooth walls of the structural lining material will actually greatly improve the flow capabilities of the existing “host” pipe. The liner will seamlessly eliminate all holes, cracks, and channeling that cause clogs, stoppages, soil erosion, and root intrusion.
To learn more about how our sewer pipe lining solution can help you, contact Pipelining Technologies today!