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Classe de vérification de BP


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Bonjour à tous,

pour la vérification des contraintes on désigne 3 classes consternant la précontrainte

Classe 1: elle n'admet pas de traction

Classe 2: elle admet une contrainte de traction

Classe 3: elle admet une ouverture limite des fissures

La question que je me pose ,comment choisir la classe adéquate ? comment justifier le choix cette classe?



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