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EN 12369-2:2025

Wood-based panels - Characteristic values for structural design - Part 2: Plywood

Edition date: 2025-09-17
In Force
Available languages: English, German
Summary: This document provides information on the characteristic values for use in designing structures incorporating wood-based panels. The characteristic values given are as defined in EN 1995 1 1. When utilizing the classification system for derivation of plywood characteristic values, this document can only be applied with reference to EN 636. This document includes the characteristic values of the mechanical properties for plywood complying with EN 636 in bending, tension, compression, panel shear and planar shear. EN 636 classifies bending properties into two sets of classes, one for stiffness and another for strength. Stiffness and strength in tension and compression are related to the same properties in bending. For shear properties, fixed values determined by correlation to density are provided. Where optimized values are needed, the characteristic values are determined directly by testing in accordance with EN 789 and EN 1058 or by combination of testing according to the latter two standards and calculation according to EN 14272. This document applies to panels complying with the three following conditions: — 5 layers or more and 6 mm overall thickness and more; — the ratio of the cumulative thickness of veneers in alternate directions does not exceed 2.5; — wood species with a mean density greater than 350 kg/m3 and not exceeding 750 kg/m3.

Le présent document donne des informations sur les valeurs caractéristiques à utiliser dans la conception des structures incorporant des panneaux à base de bois. Les valeurs caractéristiques données sont telles que définies dans l'EN 1995 1 1. Lorsque le système de classification pour la déduction des valeurs caractéristiques du contreplaqué est utilisé, le présent document ne peut être appliqué que conjointement avec l'EN 636. Le présent document contient les valeurs caractéristiques des propriétés mécaniques du contreplaqué conforme à l'EN 636 pour ce qui est de la flexion, de la traction, de la compression, du cisaillement de voile et du cisaillement roulant. L'EN 636 définit deux ensembles de classes pour les propriétés de flexion: un pour la rigidité et un autre pour la résistance. La rigidité et la résistance en traction et en compression sont liées aux mêmes propriétés en flexion. Pour les propriétés de cisaillement, des valeurs fixes déterminées par corrélation avec la masse volumique sont indiquées. Lorsque des valeurs optimisées sont nécessaires, les valeurs caractéristiques doivent être déterminées directement par essai conformément à l'EN 789 et l'EN 1058, ou par une combinaison d'essais conformes aux deux normes précédemment citées et de calculs conformes à l'EN 14272. Le présent document s'applique aux panneaux répondant aux trois conditions suivantes: — 5 couches au minimum et 6 mm d'épaisseur totale au minimum; — le rapport entre l'épaisseur cumulée dans une direction et l'épaisseur cumulée dans le sens travers ne doit pas excéder 2,5; — essences de bois ayant une masse volumique moyenne supérieure à 350 kg/m3 et n'excédant pas 750 kg/m3.

Dieses Dokument gibt Informationen über charakteristische Werte für die Berechnung und Bemessung von Bauwerken, in denen Holzwerkstoffe eingesetzt werden. Die angegebenen charakteristischen Werte entsprechen den Definitionen in EN 1995 1 1. Bei der Ableitung von charakteristischen Werten von Sperrholz auf der Grundlage des Klassifizierungssystems ist dieses Dokument nur in Verbindung mit EN 636 anwendbar. Dieses Dokument enthält die charakteristischen Werte der mechanischen Biege-, Zug-, und Druckeigenschaften sowie des Schubs senkrecht zur Plattenebene und in Plattenebene von Sperrholz nach EN 636. In EN 636 werden die Biegeeigenschaften in zwei Klassengruppen unterteilt, in eine für Steifigkeit und in die andere für Festigkeit. Steifigkeit und Festigkeit bei Zug und Druck betreffen dieselben Eigenschaften wie bei der Biegung. Für die Schubeigenschaften von Platten werden feste Werte in Abhängigkeit von der Rohdichte angegeben. Wo optimierte Werte erforderlich sind, werden die charakteristischen Werte direkt durch Prüfen nach EN 789 und EN 1058 bestimmt, oder durch eine Kombination der Prüfung der beiden genannten Normen und Berechnungen nach EN 14272. Dieses Dokument gilt für Platten, die die folgenden drei Bedingungen erfüllen: — mindestens 5 Lagen und 6 mm Gesamtdicke; — das Verhältnis zwischen der akkumulierten Dicke der Furniere einer Richtung zur akkumulierten Dicke der Querrichtung übersteigt den Wert 2,5 nicht; — Holzarten mit einer mittleren Rohdichte, die größer als 350 kg/m3 und nicht größer als 750 kg/m3 ist.
ICS: 79.060.10-Plywood
CTN: CEN/TC 112 - 6094

Reemplazo Normas

Reemplaza a EN 12369-2:2011

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