BE-13 Renovation: Lining with Cured-In-Place Pipes - Final Work, Accep...

Final Work, Acceptance, Renovation Defects

Quality Control within the Framework of Constructive Supervision

The construction supervision should ensure that the rehabilitation work is carried out properly. In comparison to the open cut method, however, there are only a few quality assurance measures for rehabilitation with "Lining with cured-in-place pipes" that can have a significant influence on the installation quality even during the installation.

Corrective action by the site supervision can only be taken during preparatory work such as cleaning and inspection of the sewer. Especially in the case of light-curing lining tubes, no visual inspection of the lining tube is possible due to the light / styrene tight protective external membrane.

During installation, construction supervision is essentially limited to the documentation of process parameters (temperature, pressure, pulling force, etc.). In this way, the causes of any quality deviations that may be detected can be determined during subsequent acceptance of the rehabilitation work. Only in the case of longer-term measures with several renovation phases is it possible to use the results of the first quality checks for corrective measures in the subsequent renovation phases. So-called "construction-accompanying" material tests (see section on material tests) are also only carried out after the lining tube has already been installed and cured in the host pipe.


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