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

Preparatory Work

Calibration of the Sewer Section

Knowledge of the geometry and the actual cross-sectional dimensions of the sewer to be rehabilitated are mandatory for the

fabrication of the lining tube with regard to its dimensions and static requirements.

Taking over the nominal diameter (DN) from the sewer database without checking it is not recommended, since:

  • factory-produced pipes may have manufacturing tolerances,
  • cross-sectional changes may have occurred due to mechanical wear, corrosion or external and internal loads.

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