Formwork for prismatic columns

Details Formwork for prismatic columns Formwork for prismatic columns

E - Fixed Constructions

04

G

E04G 13/02 (2006.01)

Patent

CA 2710533

Based on the conventional structure of formwork comprising an externally cylindrical tubular core (1), which, within, defines a prismatic housing (2), with a leaktight lining (3), said core being housed inside a surround (4) provided with hinging regions so that the formwork can be folded up when stored or transported, the features of the invention focus on the fact that the inner surround extends, with respect to the upper and also the lower end wall of the formwork, in the form of as many fins (6) as faces have been provided for the column or pillar, between which, when the formwork is assembled, an annular, laminar body (7), obtained from cardboard, plastic, wood or another material of suitable stiffness, externally encloses same, the internal dimensions whereof will be adapted to the dimensions of said column, and the thickness or external dimensions whereof will be sufficient to constitute a formwork-stabilizing element, for which purpose provision has been made for said fins (6) to be able to fold and to attach to the surface of the annular body (7).

A partir de la structure classique d'un coffrage constitué d'un noyau tubulaire (1) extérieurement cylindrique, qui définit un logement (2) prismatique interne, avec un revêtement (3) interne étanche, ledit noyau restant logé à l'intérieur d'une enveloppe (4) dotée de zones d'articulation destinées au pliage du coffrage lors du stockage ou du transport, l'invention est caractérisée en ce que l'enveloppe interne se prolonge sous la forme de rabats (6), tant par rapport à la base supérieure que par rapport à la base inférieure du coffrage. Le nombre de rabats correspond au nombre de faces prévu pour la colonne ou le pilier. Lors du montage du coffrage, un corps (7) laminaire, annulaire, obtenu avec du carton, du plastique, du bois ou d'autres matières et présentant une rigidité adéquate vient s'ajuster sur la partie externe des rabats. Les dimensions internes s'adapteront aux dimensions de la colonne, et l'épaisseur ou les dimensions externes seront suffisantes pour constituer un élément stabilisateur du coffrage. A cet effet, on prévoit que les rabats (6) se plient et se fixent sur la surface du corps annulaire (7).

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