BE-13 Renovation: Lining with Cured-In-Place Pipes - Processes - v01

Inversion with Water

Inversion Scaffold

The inversion scaffold with working platform is erected above the starting manhole. The height is determined by the hydrostatic pressure required for inversion. The applied inversion pressure needs to be sufficient to cause the lining tube to invert from point of inversion to point of termination and to press the lining tube against the host pipe wall without compressing it in such a way that the wall thickness falls below the required design thickness. Once the installation has started, the inversion pressure must be maintained until the installation has been completed.


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