Block plank and method for the production thereof

E - Fixed Constructions – 04 – B

Patent

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E04B 2/70 (2006.01)

Patent

CA 2434310

A block plank for building wooden walls, formed of a plurality of block planks (6, 7) located horizontally one above the other, of houses and other buildings is proposed which on its lower bearing face (8) has a wedge-shaped longitudinal slit (3) that tapers toward the heart (2) of the block plank (6, 7). The method of the invention for producing such block planks (6, 7) with a low wood moisture provides that the logs (1) used, before the drying operation, are provided with at least one longitudinal slit (3) extending as far as the heart (2) of the respective log (1); that the logs (1) are then dried in a drying chamber to a moisture content of less than 15%, preferably to a moisture content of 11%; and that the logs (1) are then sawn to the desired size of block plank.

L'invention concerne un madrier destiné à la construction de murs en bois de maisons et d'autres bâtiments par superposition de plusieurs madriers (6, 7) disposés horizontalement. Ce madrier présente au niveau de sa surface d'appui inférieure (8) une fente longitudinale (3) en forme de coin allant en diminuant vers le coeur (2) du madrier (6, 7). L'objectif de l'invention est de créer un procédé permettant de produire des madriers de ce type (6, 7) dont le bois présente une humidité réduite. A cet effet, les grumes (1) utilisées sont pourvues, avant l'opération de séchage, d'au moins une fente longitudinale (3) s'étendant jusqu'au coeur (2) de chaque grume (1). Les grumes (1) sont ensuite séchées dans une chambre de séchage de façon à présenter une teneur en humidité inférieure à 15 %, de préférence 11 %, puis elles sont sciées de façon à produire des madriers de dimensions voulues.

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