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  2. Cured-in-place pipe - Wikipedia

    en.wikipedia.org/wiki/Cured-in-place_pipe

    Sewage repairmen inserting uncured liner into a soon-to-be repaired pipe A cured-in-place pipe ( CIPP ) is a trenchless rehabilitation method used to repair existing pipelines. It is a jointless, seamless pipe lining within an existing pipe.

  3. Sanitary manhole - Wikipedia

    en.wikipedia.org/wiki/Sanitary_manhole

    Sanitary manholes should be constructed at locations where there is a change from a simple straight sewer line. These include all junctions that combine multiple lines into one or split from one, bends, changing in elevation, changing in pipe size, and changing in pipe type.

  4. Pipe bursting - Wikipedia

    en.wikipedia.org/wiki/Pipe_bursting

    The transition from the leading end to the trailing end can include "fins" that make first contact with the existing pipe. Using these fins as the primary breaking point is a very effective way to ensure that the pipe is broken along the entire circumference. A machine is set in the receiving pit to pull the expander head and new pipe into the ...

  5. Sliplining - Wikipedia

    en.wikipedia.org/wiki/Sliplining

    Sliplining is a technique for repairing leaks or restoring structural stability to an existing pipeline. It involves installing a smaller, "carrier pipe" into a larger "host pipe", grouting the annular space between the two pipes, and sealing the ends. Sliplining has been used since the 1940s.

  6. Trenchless technology - Wikipedia

    en.wikipedia.org/wiki/Trenchless_technology

    Mechanical spot repair is applied where damaged pipelines require the reinstatement of structural integrity. Sliplining, CIPP, and thermoformed pipe lining involve pulling or inverting a new liner into an existing pipe, then applying heat and/or pressure to force the liner to expand to fill the pipe.

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