GB2078817A

GB2078817A - Reinforced Panel

Info

Publication number: GB2078817A
Application number: GB8117239A
Authority: GB
Original assignee: Individual
Current assignee: Individual
Priority date: 1980-06-05
Filing date: 1981-06-05
Publication date: 1982-01-13
Also published as: NL8102716A; NO811868L; GB2078817B; DK242881A; DE3122431A1; SE8103485L; LU83416A1; FI60752C; SE443598B; FI60752B; BE889105A

Abstract

A reinforced panel includes a slab (2) made of concrete, chipboard or veneer and an elongate, wooden reinforcing element (1) connected thereto by nailplates 3. The panels are for use in walls, roofs or floors. A gap (4) for e.g. piping is provided between the slab and the element (1). There are no spikes round the periphery of the gap (4) and the plates (3) can be corrugated in order to increase its rigidity. The plates (3) on the opposite sides of the element (1) can be arranged unsymmetrically. The panel may be fabricated by first attaching the plates (3) to the reinforcing element (1) and then fixing them to the concrete during the casting. <IMAGE>

Description

SPECIFICATION Reinforced Construction Plate The present invention relates to a reinforced construction plate and a method of fabricating such a plate. Such reinforced plates are suited for use in construction such as, for example, walls, roofs and floors.

Concrete plates are known from the prior art, in which battens are attached to the concrete by means of spikes or hooks located at the edges of the battens, the spikes being first hit into the wood and then into the recently cast concrete.

This method of manufacturing the plates has the following drawbacks: because of the use of spikes, the edge of the timber battens has to be made extra wide, and consequently advantageous timber dimensions cannot be employed; the edge of the timber battens tends to crack due to the great number of spikes employed; the timber of the battens has to be in contact with the concrete and therefore, in most cases, the wood has to be impregnated with wood preservative because of the damp emanating from the-concrete; the gripping power of the spikes is so small that the timber battens and the concrete can either not be used as a co-functioning element or the level of co-functioning is relatively low.

An object of the present invention is, among others, to eliminate the above described drawbacks.

According to the present invention, there is provided a reinforced construction plate comprising a slab and a reinforcing element coupled to the slab by one or more truss plates.

According to a further aspect of the present invention there is provided a method of fabricating a reinforced construction plate comprising a slab of concrete and a reinforcing element coupled to the slab by a truss plate, in which the truss plate is fixed to the concrete slab during casting of the slab, attachment being achieved by means of the hardening reaction of the concrete.

In an embodiment of the present invention a relatively large opening or gap is provided between the wooden reinforcement element and the slab, having the advantage that the timber dimensions can be reduced both in width and in height without weakening the solidity, because the timber located on the concrete side has no effective function. Moreover, a relatively large gap offers a possibility for locating piping systems and improves the airing of the construction element in question.

In another embodiment, the timber element is replaced by a grate-like element, in which case, particularly in relation to long spans, an advantageous performance can be achieved. The grate can be manufactured so that the slab functions as a boom, or so that the batten is replaced by the grate.

Embodiments of the present invention wili now be described by way of example with reference to the accompanying drawings, in which: Figure 1 is a front elevation view of an embodiment of the invention; Figure 2 is a side elevation view of the embodiment shown in Figure 1, and Figure 3 is an illustration of another embodiment of the present invention, where a grate-like construction is employed as the reinforcing element.

A reinforced plate according to an embodiment of the present invention is shown in Figures 1 and 2. The plate comprises a slab 2 and reinforcing elements 1. The slab 2 is cast from concrete and reinforced in a generally known manner, by using steel net and/or steel plate. The reinforcing element 1 is a batten of wood, but can alternatively be composed of another similar material which is generally a good heat insulator and power conveyor. Truss plates 3 are attached at the sides of each batten 1 by a generally known method, so that spike-like members in the plates 3 are pushed into the wood. The truss plates 3 are placed either in pairs at either side of the battens, or in interlacing positions as illustrated in Figure 2. Any combination of the above described arrangements can naturally also be used.

During the casting of the slab 2 the truss plates 3 are placed within the concrete, so that they are fixed in place while the concrete is hardened. The truss plates 3 are located so that an opening or gap 4 is provided between the slab 2 and the reinforcing element 1. The truss plate 3 can well be a conventional truss plate, but it is preferred that the gap 4 be provided between the timber batten and the concrete; the spikes are not punched out of the truss plate 3 around the periphery of the opening, and moreover the truss plate can be profiled at this point, for example, corrugated in order to prevent it from accidental bending.

Figure 3 illustrates a reinforced plate according to a further embodiment in which the reinforcing element is a grate-like construction. Truss plates 6 are located within a slab 5 cast from concrete.

The truss plates 6 are pressed against braces 7 made of wood or other similar material. An opening 8 is provided between the braces 7 and the slab 5. The braces 7 are attached at their other end to a batten 10 by means of additional truss plates 9. Thus, in this embodiment, the reinforced plate forms a combined construction in which the slab 5 itself functions as a boom.

The grate support can also be used as the reinforcing element, so that the batten which functions as the reinforcing element in Figures 1 and 2 is replaced by a grate support.

In another embodiment of the invention, in which the slab is composed of veneer or chipboard, the truss plates are such that nail-like protrusions are punched on their slab-gripping edge. In this case, the attaching of the truss plates to the slab can be carried out by pushing the naillike protrusions into the slab in the breadthwise (or lengthwise) direction of the plate.

When the slab is made out of concrete or similar setting material, the plate according to the invention is typically manufactured by casting the slab in a mould with a steel net as reinforcement, or the mould is made of a steel plate, which remains attached to the slab; simultaneously, during the casting, battens are plunged into the concrete or similar material with the truss plates attached to them. Fabrication can also be accomplished in a different manner, for example, so that the concrete is cast on the battens.

The opening or gap to be left between the reinforcing elements and the slab also allows for a method of fabrication in which the truss plates are first cast within the concrete. Now they can be bent outwards beforehand so that the reinforcing element fits between the spikes. As the truss plates are being pressed into the reinforcing element, they are also straightened.

The reinforced construction plate according to the invention is generally used as a construction element in which the space between the wooden members is heat-insulated, and the elements are coupled together in conventional fashion.

Claims

1. A reinforced construction plate comprising a slab and a reinforcing element coupled to the slab by one or more truss plates.

2. A plate according to claim 1, wherein the slab is composed of a material selected from the group consisting of concrete veneer and chipboard.

3. A plate according to claim 1 or 2, wherein the reinforcing element is composed of wood.

4. A plate according to any preceding claim, wherein a gap is provided between the slab and the reinforcing element

5. A plate according to claim 4, wherein the or each truss plate is attached to the reinforcing element by spikes which are located outside of the peripheral region of the gap.

6. A plate according to claim 4 or 5, wherein that portion of the or each truss plate spanning the gap between the slab and reinforcing element is profiled to increase the rigidity of the truss plate.

7. A plate according to claim 6, wherein said portion of the truss plate spanning the gap is corrugated.

8. A plate according to any preceding claim, wherein the reinforcing element is a grate-like construction.

9. A plate according to any preceding claim, wherein truss plates are arranged unsymmetrically on opposite sides of the reinforcing element.

10. A plate according to any preceding claim, wherein the slab is composed of concrete, the outer surface of which is covered by a structure which increases the rigidity of the slab and/or functions as a covering for the slab.

1 A plate according to claim 10, wherein the concrete is covered with steel plate to increase the rigidity of and/or function as a covering for the slab.

12. A reinforced construction plate substantially as herein described with reference to figures 1 and 2 or 3 of the accompanying drawings.

1 3. A method of fabricating a reinforced construction plate comprising a slab of concrete and a reinforcing element coupled to the slab by a truss plate, in which the truss plate is fixed to the concrete slab during casting of the slab, attachment being achieved by means of the hardening reaction of the concrete.

14. A method according to claim 13, wherein the reinforcing element is attached to the truss plate prior to fixing the truss plate to the concrete slab.

1 5. A method according to claim 13, wherein the reinforcing element is coupled with the slab by means of truss plates only after the truss plates have been fixed to the slab.

16. A method of fabricating a reinforced construction plate substantially as herein described with reference to Figures 1 and 2 or 3 of the accompanying drawings.