NF EN 14982

Plastics piping and ducting systems - Thermoplastics shafts or risers for inspection chambers and manholes - Determination of ring stiffness

Le présent document spécifie une méthode d'essai permettant d'évaluer la rigidité annulaire tangentielle initiale (à court terme) des éléments de rehausse pour chambres d'inspection ou regards en thermoplastique.

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