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If the liner passes through a manhole, then a professional transition between the invert and the existing manhole channel must be carried out [ATVM143-5b]. (Image: Lining with contiuous pipe - Rohrstrangverfahren - Adapting the liner to the manhole channels)
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| Details concerning the integration of laterals are described in the separate lecture "Branch connections" (Image: Connecting a lateral to the liner by means of a welded-in plastics pipe and shrink socket with reference to [WRC83] [Image: S&P GmbH]) |
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This module introduces the method variants of the lining with continuous pipes with annular space. |
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The six-part series of lectures about the "lining with continuous pipes" provides an overview of the limiting conditions, applied material, method variants as well as the possibilities of the quality assurance when applying these renovation measures. Part 1 "lining with continuous pipes - fundamentals" first classifies the lining processes with continuous pipes according to the main method categories. Afterwards, an overview of the relevant standards … |
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According to EN 752-5 [DINEN752-5:1995], renovation is understood to be measures aimed at improving the current functionality of sewage pipes and sewers under full or partial inclusion of their original substance. |
The measures used for carrying this out are: -
Coating processes and
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Lining processes.
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(Image: Damages) |
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| (Image: Distribution of the lining processes)
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Full linings serve the purpose of replacing or enhancing the resistance properties to physical, chemical, biochemical and/or biological attacks, for hindering the renewed formation of incrustations, for replacing and/or increasing the static bearing capacity as well as the leaktightness. | |
(Image: Structural calculation)
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(Image: Leaktightness)
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Lining processes are differentiated as follows - lining with pipes and
- Lining with installed individual elements (segmental lining process) in the form of
- Partial segmental lining of the invert region or the gas space and
- Full segmental lining
| Lining with pipes |
(Image: Lining with prefabricated pipes)
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(Image: Lining with site manufactured pipes)
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(Image: Lining with site manufactured and hardened pipes)
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| Segmental lining (Image: Segmental lining)
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The lining with pipes is understood to be, similar to (not found), the creation of self-supporting full lining of sewer sections based on -
Prefabricated pipes;
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Site manufactured pipes; and
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Site manufactured and hardened pipes.
(Image: Depiction of the lining with site manufactured pipes (spiral lining process) using the RIB-LOC-Relining-System as an example with reference to [FI-RIBLOb] - Sketch of principle [Image: S&P GmbH]) (Image: Insertion … |
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Lining with prefabricated pipes is characterised by the pulling, pushing or driving-in of pipes (also lining pipes) into the section of the sewer to be rehabilitated. One differentiates between: -
Lining with continuous pipes
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Lining with discrete pipes
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(Image: Conventional sliplining process with annular space with reference to [FI-Teerb] - Depiction of principle [Image: S&P GmbH]) |
(Image: Discrete pipe method - Pulling-in of discrete pipes into … |
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Pulling-in a flexible and butt-welded continuous plastic pipe via an excavation or a manhole into the section to be rehabilitated by means of a winch. One differentiates between: - Lining with continuous pipes with annular space (The annular space between lining pipe and inner sewer wall is grouted)
- Lining with continuous pipes without annular space (Lining with close-fit pipes)
| with annular space (Image: Principle depiction of the annular space grouting)
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Lining with continuous pipes Lining with continuous pipes:
Lining with pipe made continuous for the length of the section to be renovated prior to insertion, and which has not been shaped to give it a cross-sectional diameter smaller than its final diameter after installation [DINEN13566-1:2003]. |
(Image: Conventional sliplining process with annular space with reference to [FI-Teerb] - Depiction of principle [Image: S&P GmbH]) |
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Lining with close-… |
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DIN EN 13566 | Lining pipe Lining pipe:
Pipe to be inserted for renovation purposes [DINEN13566-1:2003]. | Liner Liner:
Lining pipe after installation [DINEN13566-1:2003]. | Lining system Lining system:
Lining pipe and all relevant fittings for insertion into an existing pipeline for the purposes of renovation [DINEN13566-1:2003]. |
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European standards: DIN EN 752-5: Drain and sewer systems outside buildings - Part 5: Rehabilitation (11.1997) DIN EN 13380: General requirements for components used for renovation and repair of drain and sewer systems outside buildings (10.2001) DIN EN 13566: Plastics piping systems for renovation of underground non-pressure drainage and sewerage networks
Part 1: General (04.2003);
Part 2: Lining with continuous pipes (02.2006)
Partl 3: Lining with … |
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(Table: Application areas for lining with continuous pipes [FI-Steina]) |
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| | Applicable | | Conditionally applicable | | Not applicable | | |
Lining with continuous pipes can be applied for damage types like leaks, corrosion, root ingress and cracks. |
(Image: Corrosion of the whole inner surface of a concrete sewer - Camera picture [FI-IfK])
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(Image: Root ingress)
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(Image: Damage - large crack)
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| | Applicable | | Conditionally applicable | | Not applicable | | |
In case of damage types like groundwater infiltration, positional deviations and fragments, lining with continuous pipes can only be conditionally applied. Here special measures are necessary like, for example structural considerations, previous sealing etc.. |
(Image: Infiltration)
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(Image: Positional deviation in the vertical direction [FI-KMG])
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(Image: Picture of a damage 'collapse' of a section … |
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| | Applicable | | Conditionally applicable | | Not applicable | | |
A removal of defects in the case of pipe fractures or collapses is impossible with lining with continuous pipes. |
(Image: Collapse [FI-Jtele])
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(Image: Pipe break - a large piece is missing [FI-IfK])
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(Image: Collapse - vitrified clay sewer [FI-IfK])
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(Image: Question) |
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Has the actual state of the old-pipe-soil-system been thoroughly determined?
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Is the sewer to be rehabilitated temporarily stable and is the bedding sufficient?
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Is it possible to take the old sewer out of operation for a limited time?
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Is the old sewer free of obstacles?
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Is the minimal clear cross section big enough to allow the insertion of the hydraulically necessary liner?
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May potential curved and angular deflections lead …
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| (Image: Pros and cons) | General information - Applicable for long sections depending on the local situation
- It is possible to apply lining pipes made of HD-PE, PP as well as PVC
- No pipe joints (generally welded)
- Lining pipe can be controlled and examined before installation, e.g. with regard to its water tightness
- Lining pipes made of HD-PE, PP or PVC, respectively are highly resistant to mechanical and chemical attacks
- It is possible to rehabilitate …
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