UNITRACC - Underground Infrastructure Training and Competence Center

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Jun 07, 2006

Modules

Trenchless 101 - Part IV - Renovation

Lining with prefabricated pipes with annular space

Different types of pipe installation

Pulling-in process...

...of pipelines with tensile-restrained pipe joints

(Video: Discrete pipe process - Pulling-in of discrete pipes with tensile restrained joint)

...of pipelines with non-tensile-restrained pipe joints (pulling/pushing)

(Video: Pulling-in of discrete pipes with non-tensile restrained joints)

...of discrete pipes

(Video: Discrete pipe process - Pulling-in of single pipes into the section)

Pushing-in process

(Video: Pushing-in of discrete …

Jun 06, 2006

Modules

Trenchless 101 - Part IV - Renovation

Lining with prefabricated pipes with annular space

Mar 20, 2006

Modules

Trenchless 101 - Part IV - Renovation

Lining with prefabricated pipes without annular space

Process

DIN EN 13566 / ATV-DVWK-M 143-11
Lining with close-fit pipes

Lining with close-fit pipes:
Lining with a continuous pipe for which the cross-section is reduced to facilitate installation and reverted after installation to provide a close fit to the existing pipe [DINEN13566-1:2003].

(Image: Compact pipe process with reference to [FI-Wavin] - Pulling-in the C-shaped folded continuous pipe [Image: S&P GmbH])

Mar 20, 2006

Modules

Trenchless 101 - Part IV - Renovation

Lining with prefabricated pipes without annular space

Lining with continuous pipes without annular space

Mar 20, 2006

Modules

Trenchless 101 - Part IV - Renovation

Lining with prefabricated pipes without annular space

Procedure

(Image: Sequence diagram for renovation of drains and sewers with prefabricated pipes - Lining with continuous pipes without annular space)

Mar 20, 2006

Modules

Trenchless 101 - Part IV - Renovation

Lining with prefabricated pipes without annular space

Lining with close-fit pipes

Depending on the type of deformation and reversion of the plastic continuous pipe, one generally distinguishes in principle between the deformation and the reduction processes .
Deformation process (Image: Compact pipe process with reference to [FI-Wavin] - Pulling-in the C-shaped folded continuous pipe [Image: S&P GmbH])	Reduction process (Image: Reduction process with thermal-mechanical diameter reduction (Swagelining) with reference to [FI-Advan] - …

Mar 20, 2006

Modules

Trenchless 101 - Part IV - Renovation

Lining with prefabricated pipes without annular space

Staff and equipment required

The lining with continuous pipes without annular space requires the following equipment:

Staff of 4-6 persons on construction site
Possibly devices and machines for installing and securing the excavation (e.g. excavator, lining elements)
Heating element butt welding equipment and power set, if required
Winch with corresponding tensile strength
Pulling head
Roller blocks
Lifting device
Reduction unit, if required
Steam generator, if required
Compressor …

Mar 20, 2006

Modules

Trenchless 101 - Part IV - Renovation

Lining with prefabricated pipes without annular space

Principle of procedure of the deformation process

In this group of processes, the respective plastic continuous pipes of PE or PVC specially modified for this process are predeformed into a U- or C-shape by supplying heat at the site or immediately before being pulled in so that, depending on the string diameter compared to the original cross section, a cross-sectional reduction of up to 40% [FI-Rehau] is achieved.

(Image: Deformation process – lining pipe pre-deformed)

(Image: Deformation process - …

Mar 21, 2006

Modules

Trenchless 101 - Part IV - Renovation

Lining with prefabricated pipes without annular space

Method variants

In contrast to the deformation process, the outside diameter of the HD-PE plastics continuous pipe is thermally and/or mechanically reduced by about 10% immediately before the insertion process while the circular cross section is maintained, and it is expanded again until it clings to the inner wall of the sewerby using the material's own "memory effect".

Swage-Lining
Thermo-mechanical deformation of continuous pipe

(Image: Reduction process with thermal-…

Mar 21, 2006

Modules

Trenchless 101 - Part IV - Renovation

Lining with prefabricated pipes without annular space

Principle of procedure for swage-lining

The temporary diameter reduction is thermally and mechanically carried out in a die. This basically consists of a firing chamber, a heating section and a die plate.	(Image: Reduction process with thermal-mechanical diameter reduction (Swagelining) with reference to [FI-Teerb] - View on the starting excavation [Image: S&P GmbH])
(Image: Reduction process with thermal-mechanical diameter reduction (Swagelining) with reference to [FI-Teerb] - View …

Mar 21, 2006

Modules

Trenchless 101 - Part IV - Renovation

Lining with prefabricated pipes without annular space

Principal procedure for rolldown process

(Image: Reduction process with mechanical diameter reduction (Rolldown process) with reference to [FI-Klug] - Sketch of the principle [Image: S&P GmbH])

In the rolldown process, the temporary diameter reduction of the prefabricated continuous pipe is achieved mechanically with the aid of a hydraulically driven gripper mechanism and two - or for larger nominal sizes three - hemispherical roller pairs set at 90Â° to each other .

(Image: Deformation …

Jun 06, 2006

Modules

Trenchless 101 - Part IV - Renovation

Lining with prefabricated pipes without annular space

Jun 07, 2006

Modules

Trenchless 101 - Part IV - Renovation

Lining with site manufactured pipes with annular space

Method variants of lining with site manufactured pipes with annular space

RIB-LOC-Relining-System

(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])

SPR process

(Image: Spiral lining process RotaLoc with reference to [FI-RIBLOa] [Image: S&P GmbH] - Sketch of principle)

Jun 07, 2006

Modules

Trenchless 101 - Part IV - Renovation

Lining with site manufactured pipes with annular space

RIB-LOC-Relining-System

Jun 07, 2006

Modules

Trenchless 101 - Part IV - Renovation

Lining with site manufactured pipes with annular space

Staff and equipment required

(Image: Equipment for lining with site manufactured pipes with anular space)

The RIB-LOC-Relining-System requires the following equipment:

3 persons required on the site
Winding machine with exchangeable winding forms
Hydraulic pump for the drive
Holder for the plastics profile pipe roller
Light lifting equipment
Equipment for leaktightness testing
Equipment for annular space grouting
Cutting, boring or milling tools for the connections (robot)

Jun 07, 2006

Modules

Trenchless 101 - Part IV - Renovation

Lining with site manufactured pipes with annular space

Evaluation

(Image: Pros and cons)

Advantages of RIB-LOC-Relining-System:

short construction time
few traffic restrictions
re-establishment or increase of the static load bearing capacity of the pipeline to be rehabilitated
possibility to reduce the drainage cross section of hydraulically oversized sewers

Jun 07, 2006

Modules

Trenchless 101 - Part IV - Renovation

Lining with site manufactured pipes with annular space

Evaluation

(Image: Pros and cons)

Disadvantages of RIB-LOC-Relining-System:

extensive re-restablishment of connection sewers in the non-accessible nominal size area when using the open-cut method
reduction of the cross section of the pipeline to be rehabilitated
damage areas must be sealed first due to strong water infiltration
necessity of annular space grouting with buckling risk of the liner
wastewater deposits in the annular space lead to cavities in the …

Jun 07, 2006

Modules

Trenchless 101 - Part IV - Renovation

Lining with site manufactured pipes with annular space

SPR process

The Japanese SPR process (Sewage Pipe Renewal Method) is characterised by the winding of a liner of PVC rib profiles with steel reinforcing strips within the section of the sewer to be rehabilitated.

The PVC rib profile is wound off a roll and added via an entry manhole to a self-propelling winding machine that moves along an defined space adapted to the contour of the sewer to be lined .

(Image: Spiral lining process RotaLoc with reference to [FI-…