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Final Work, Acceptance, Renovation Defects
Material Tests
Final Work, Acceptance, Renovation Defects
Site Sampling and Test Sample / Specimen
Sampling in manholes by use of a confining pipe or sleeve is generally suitable when lining circular pipes of diameter up to 600 mm only. If the specimen does not meet the requirements, a second sample is preferably be taken from the actual pipe wall, which is then decisive.
Minimum size of the sample
CIPP liners up to DN 200
A complete circular ring should be taken for the vertical – compression test if on-site circumstances permit this. Necessary sample length: Pipe diameter + 50 mm
Examples:
Pipe DN 150: Sample length = 200 mm
Pipe DN 200: Sample length = 250 mm
Minimum size of the sample
CIPP liners larger than DN 200
The necessary dimensions of such liner samples are:
-
Total wall thickness up to 10 mm: Sample must measure not less than 200 mm x 350 mm
-
Total wall thickness greater than 10 mm:
→ Circumferential direction: 20 x total thickness
→ Longitudinal direction: 350 mm
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