Pre-manufactured roof plate element and girder thereto

E - Fixed Constructions – 04 – D

Patent

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Details

E04D 1/28 (2006.01) E04B 5/10 (2006.01) E04B 7/22 (2006.01) E04C 3/07 (2006.01) E04C 3/29 (2006.01) E04C 3/292 (2006.01) E04C 3/04 (2006.01)

Patent

CA 2288780

A pre-manufactured roof plate element (4) comprising a number of longitudinal box-shaped girders (5) of steel plate, which are upwardly connected with a compressive force plate with almost same width as the girder (5), and which preferably are positioned in each side and in the midde of the element is described, and where said compressive force plate consists of a steel plate (6), which, seen in cross section, is corrugated, preferably trapezoid. Furthermore a box-shaped girder (5) of the said type is described. By means of simple provisions it is hereby obtained, that it becomes possible to reduce the overall height and the weight of the roof plate element, which may result in considerable savings by transport and storage of finished pre- manufactured roof plate elements. However, it is of great importance that a roof plate element or a girder according to the invention may be produced totally without use of organic material.

L'invention a pour objet un élément de plaque d'appui préfabriqué (4). Cet élément comprend un certain nombre de poutres (5) longitudinales, de forme parallélépipédique, qui sont reliées vers le haut à une plaque de force de compression présentant pratiquement la même largeur que la poutre (5). De préférence, ces poutres sont positionnées de chaque côté et au centre de l'élément de plaque d'appui. La plaque de force de compression se compose d'une plaque d'acier (6) qui, vue en coupe transversale, est ondulée, et de préférence, avec des ondulations trapézoïdales. En outre, l'invention concerne une poutre de forme parallélépipédique (5) de ce type. Par un système simple, il est possible de réduire la hauteur globale et le poids de cet élément de plaque d'appui, ce qui permet de réaliser des gains d'espace pour le transport et le stockage de ces éléments. Toutefois, il est très important qu'un élément de plaque d'appui, ou une poutre selon l'invention, puisse être fabriqué sans utiliser de matière organique.

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