FR2480337A1 - Prefabricated shutter for edge beams - has starter bar and orifice joint holding edge beam during slab casting - Google Patents

Abstract

The shutter (20) lifts and positions the lateral or edge beam (21) into position and it can stay there as a decoration and may contribute to the final strength. Starter bars protrude from the beam end and are turned up to fit sockets in the shutter, or the shutter can have the bars and the beam the sockets. The top end of the starter bars can be threaded to take a lock nut and when the shutter and beam are in position the slab (22) of the floor or ceiling is cast.

Description

 The object of the invention relates to a raising element for lateral formwork which can be integrated and positioned at the time of use.

 It is intended to produce an active formwork or raising of lateral formwork for beams or edge beams, whether or not participating in the final strength.

 In known devices, the formwork of the edge beams or the like entered into the bearing element and obtained. by molding the assembly. Their manufacture was expensive for the complex shapes of the molds, the complete element was heavy and risked deterioration or chipping during storage, handling and installation.

Installation orientation was also required, which complicated the installation.

 The device according to the invention eliminates these drawbacks and allows separate prefabrication on the one hand of the riser or lateral formwork with its assembly means and on the other hand side beams or edge beams, with their frames waiting . Assembly takes place during construction on site.

 It consists of the combination and the corresponding positioning of the standby assembly bars, and of the receiving orifices arranged on the extension and the carrier element and the inter-use of each of them.

In the appended drawings given by way of nonlimiting example of one of the embodiments of the subject of the invention:
Figures 1 and 2 show the elevations seen in cross section.

 Figures 3 and 4 show under the same conditions the beams or edge beams.

 Figures 5, 6, 7 show various forms of assemblies.

The side formwork extension for beams, beams or others, fig 1 and 2, is constituted by an element 1, such as a joint of length corresponding to that of the support.

 On the lower facing 2 are made, either implantation of pending irons 3, or recesses 4 armature receivers.

 They are manufactured either as standard elements, or in elements appropriate to their destination which can vary their profile, their height or their width.

The sills or beams 5, 6 are provided on their upper faces 7, 8, either with projecting irons projecting 11, 12, or with holes 9, 10.

 These elements are arranged at corresponding intervals either at the orifices 4 or at the irons 3.

 These irons are positioned to allow the positioning of the forms 13, 14 either on one face or on the other of the beam 15, fig 5.

This allows the edge beams or beams to be placed on the site, regardless of the formwork's positioning. There is thus a simplified workforce and ease of installation without taking into account the orientations of the forms.

The irons 3, or 11, 12 and the corresponding recesses 4, 9, 10 are assembled with an appropriate binder.

There is also provision for mechanical fixing using a bolt i7 and a thread 18 made at the end of the rods 19.

 The elevation can then be made of synthetic resin, essentially insulated or decorative 20.

The sill or edge beam 21 will support fig 7, the floor. The standby iron 19 will anchor the element 20, while the slab 22 and the chaining 23 will be cast in the traditional way.

The raising or active formwork may extend beyond the facade and constitute a decorative shingle.

The removability of these elevations or formwork allows their separate production in series, facilitates their transport and installation while the beams or edge beams, can between manufactured according to current processes with all their irons waiting, whether used or no with their formwork
This is why the shapes, dimensions and arrangements of the various elements may vary within the limit of the equivalents, as moreover the materials used for their manufacture, without thereby changing the general conception of the invention which has just been described.

Claims (1)

CLAIMS 1t Device constituting a prefabricated raising element for lateral formwork that can be integrated and positioned at the time of use, making it possible to produce active or raising formwork for beams or edge beams, whether or not parting in the final strength, characterized by the combination and the positioning of the assembly means (3, 4) of the risers (1) with those (9, 10, 11, 12) of the side rails or edge beams (5, 6). 2 "Device according to claim 1 - characterized by the fact that the formwork or extensions are provided on their lower facing with protruding irons (3) pending or receiving orifices (4). 3 Device according to claim 1 characterized by the fact that the edge beams or sills (5, 6) are provided either with waiting irons (11, 12) or with receiving orifices (9, -10) on the lateral parts of their upper facing (8, 9 ) with locations corresponding to those of the elevations (1).  40 Device according to claim 1 characterized in that the standby irons (19) comprise a thread (17) receiving a clamping bolt (16) for mechanical assemblies.  5 Device according to claim 1 characterized in that the assemblies of the elevations (13, 14) on their support (15) are carried out either with an overflow, or in alignment by binder, bonding or other known method.