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

Static Proof


Depending on the host pipe condition, imperfections must be assumed for the liner, i.e. it must be assumed in the calculation that the cross-sectional shape of the liner does not correspond to the nominal or initial internal contour of the host pipe, but deviates from it in a certain shape and to a certain extent.

In the currently valid set of rules, the following three types of imperfections are to be considered:

  • Local imperfection wv
  • Joint ring deformation wGR,V
  • Gap formation wS


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