{"id":5767,"date":"2023-11-01T12:08:45","date_gmt":"2023-11-01T11:08:45","guid":{"rendered":"https:\/\/www.labexpin.com\/portfolio-items\/classification-visuelle-du-bois\/"},"modified":"2025-08-28T16:59:44","modified_gmt":"2025-08-28T14:59:44","slug":"classification-visuelle-du-bois","status":"publish","type":"avada_portfolio","link":"https:\/\/www.labexpin.com\/fr\/portfolio-items\/classification-visuelle-du-bois\/","title":{"rendered":"Classification visuelle du bois"},"content":{"rendered":"

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Classification visuelle du bois<\/h1><\/div>

La norme UNI 11119\/2004 indique les r\u00e8gles de classification en d\u00e9terminant les caract\u00e9ristiques des d\u00e9fauts des \u00e9l\u00e9ments structuraux en bois in situ, afin d’assigner l’\u00e9l\u00e9ment en bois analys\u00e9 \u00e0 une cat\u00e9gorie. Cette norme, en plus d’exiger la mesure de la section transversale de l’\u00e9l\u00e9ment en bois, catalogue ce dernier sur la base de certaines caract\u00e9ristiques significatives par rapport \u00e0 sa classification. L’\u00e9l\u00e9ment en bois est donc inspect\u00e9 sur au moins trois c\u00f4t\u00e9s, il doit \u00eatre d\u00e9pourvu de rev\u00eatements couvrants (peinture, vernis, …), et certains param\u00e8tres sont d\u00e9finis quantitativement, tels que : pr\u00e9sence de l\u00e9sions, pr\u00e9sence de d\u00e9t\u00e9rioration, pr\u00e9sence et dimension de gemmes, de n\u0153uds isol\u00e9s et de groupes de n\u0153uds, inclinaison du fil. Pour \u00eatre class\u00e9 dans une cat\u00e9gorie sp\u00e9cifique (I, II ou III), il est n\u00e9cessaire que toutes les caract\u00e9ristiques et\/ou d\u00e9fauts entrent dans les limites sp\u00e9cifi\u00e9es pour chacune d’entre elles, l’\u00e9l\u00e9ment \u00e9tant autrement inclassable. \u00c0 partir de cette r\u00e9partition par cat\u00e9gorie, la norme indique ensuite, pour les \u00e9l\u00e9ments en bois de diff\u00e9rentes essences et cat\u00e9gories, les contraintes maximales qui peuvent \u00eatre adopt\u00e9es pour l’application de la m\u00e9thode des contraintes admissibles, les valeurs moyennes du module d’\u00e9lasticit\u00e9 en flexion, qui peuvent \u00eatre utilis\u00e9es pour le calcul des d\u00e9formations de la structure dans ses \u00e9tats limites de fonction. <\/p>\n

Normes techniques de r\u00e9f\u00e9rence: UNI 11119\/2004; UNI 11035:2022.<\/p>\n<\/div><\/div><\/div><\/div><\/div>

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