CA1168058A

CA1168058A - Fortified construction panel

Info

Publication number: CA1168058A
Application number: CA000379355A
Authority: CA
Inventors: Tuomo Poutanen
Original assignee: Individual
Current assignee: Individual
Priority date: 1981-06-09
Filing date: 1981-06-09
Publication date: 1984-05-29

Abstract

Abstract of the Disclosure The object of the invention is a fortified construction panel comprising a slab made of concrete and a reinforcing member made of wood or other similar material.
These fortified panels are suited for use in constructions as walls, roofs or floors. There is an opening between the slab and the reinforcing member, and they are coupled together by means of a truss plate. There are no spikes around the periphery of the opening located between the reinforcing member and the slab, and it can be corrugated in order to increase its solidity. The truss plates on the opposite sides of the element can be located unsymmetrically.
The fortified construction panel can be fabricated by first attaching the truss plates to the reinforcing member and then fixing them to the concrete during the casting.

Description

The object of the present invention is a fortified construction panel comprising a slab made of concrete, veneer, chipboard or equivalent, and a reinforcing element made of wood or other similar material. These fortified panels are suited for use in constructions as walls, roofs or floors.
Another object of the present invention is a method ; for the fabrication of the said fortified panel. In the prior art are known panels where battens are attached to the ; concrete by means of nails, spikes or hooks placed at the edges of the battens, so that the spikes are first hit into the wood and then plunged into the recently cast concrete.
This method of manufacturing the plates has the following drawbacks:
- Because of the spikes the edge of the timber has to be made unnecessarily wide, and consequently the advantageous timber dimensions cannot be employed.
- The edge of the timber tends to crack due to the great amount of spikes.
- The timber has to be in touch with the concrete, wherefore the wood in most cases has to be impregnated with wood preservative because of the dampness emanating from the concrete.
- The gripping power of the spikes is so small that the timber and the concrete cannot be used as a co-functioning element or the level of co-functioning is relatively low.
The purpose of the present invention is, among others, to eliminate the above-described drawbacks. In order to realize this, the fortified panel according to the invention is characterized by a slab of castable material and reinforcing members made of wood or other similar -- 1 ~

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material. The number of the reinforcing members for each slab can be one or several', and the members are coupled together by means of truss plates.
In a more specific embodiment of the present invention', the reinforcing members are spaced from the slab', ; and the truss plates bridge the gap between the slab and the reinforcing members.
The fortified panel according to the invention brings about the following advantages~
- There can exist a relatively large opening between the wooden reinforcing member and the slab', in which case 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 opening offers a possibility for locating conductive or piping systems (here termed building linaye) and improves the airing of the construc-tion element in question.
- The timber can be 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 the boom', or so that the batten is replaced by the grate.
In the following', the invention and its ' advantages are explained in detail with reference to the appended drawings.
Figure 1 is a front elevation view of one preferred embodiment of the invention.
Figure 2 is a side elevation view of the plate construction of Figure 1.
Figure 3 is an illustration of another embodiment ?: - 2 -:,,i ,.; .

I 1 6~3058 of the invention, where a grate-like construction is employed as the fortifying element.
According to Figures 1 and 2', the panel of the invention comprises the slab 2 and the fortifying elements 1. The slab 2 is manufactured of concrete or other castable material and fortified in the generally known manner by ' using steel net and/or steel plate. The reinforcing member 1 is a batten of wood (wood beam)', but it can also be made of other similar material which is generally a good heat insulator and force transmitter. At the sides of the batten or beam functioning as the reinforcing member, there are attached truss or spike plates 3 by employing the generally known method', so that the spike-like members in the plate 3 are pressed into the wood. The truss or spike plates 3 are placed either in pairs at 'hoth sides of the batten', or in interlacing positions as illustrated in Figure 2. Combinations of the above-described manners can naturally be used as well.
During the casting of the slab 2, the truss '~ 20 plates 3 are placed within the concrete, so that they are fixed in their place while the concrete is hardened. The truss plates 3 are-located so that an opening 4 is formed between the slab 2 and the fortifying element 1. The truss plate 3 can well be a conventional truss plate`, but in an important special application of the invention', there is formed the opening 4 between the timber 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 in order to prevent it from accidental bending.
Figure 3 illustrates a fortified panel where the reinforcing member is a grate-like construction. The slab 5 is also in this application made of concrete or e~uivalent.

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Within the concrete are located the truss plates 6. The truss plates 6 are then pressed against the braces 7 made of wood or other similar material. There is an opening 8 ; between the braces 7 and the slab 5. At their otner end, the braces 7 are attached to a batten 10 by means of addi-tional truss plates 9. Thus, the fortified panel, according to the invention, forms a combined construction where the ; slab 5 itself functions as the boom.
The grate support can also be used as the rein-forcing member, so that the batten functioning as the reinforcing m~nber in Figures 1 and 2 is replaced by the grate support as such.
In another preferred embodiment of the invention, where the slab is made out of veneer or chipboard, the truss plates can also be designed so that on their slab-gripping edge are punched nail-like protuberances. In this case, the attaching of the truss plates to the slab can be carried out by pressing the said nails into the slab in the breadthwise (or lengthwise) direction of the panel.
When the slab is made out of concrete or equivalent, the plate, according to the invention, is typically manu-factured so that the concrete is cast in a mould which is fortified by a steel net, or the mould is made of a steel plate, which remains attached to the slab; simultaneously, during the casting, into the concrete are plunged the battens with the truss plates attached to them. The fabrication can also take place in a different manner, for example, so that the concrete is cast on the battens.
The opening to be left between the reinforcing element and the slab also allows for a method of fabrication where the truss plates are first cast within the concrete.

~ow they can be bent outwards beforehand so that the 0 5 ~
fortifying element fits between the spikes. While being pressed into the fortifying element, the truss plates are also straightened.
The fortified construction plate, according to the invention, is generally used as a construction element so that the space between the wooden members is heat-insulated, and the elements are coupled together in conventional , fashion.

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Claims

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:

1. A fortified construction plate comprising:
a slab;
at least one wooden beam extending along a face of said slab and spaced therefrom; and a plurality of spike plates connected between said wooden beam and said slab with a gap opening formed between said beam and said slab which is at least sufficiently large to accommodate at least some building linage, said spike plates each having spikes engaging inside of said beam and at least a portion engaging said slab with no spikes in said gap opening.

2. A plate according to claim 1, wherein said spike plates are each at least partly profiled in order to increase their stiffness.

3. A plate according to claim 1, wherein said slab is made up of material selected from the group consisting of castable material and veneer.

4. A plate according to claim 3, wherein said slab is made from material selected from the group consisting of concrete, chipboard, and veneer.

5. A method for the fabrication of a fortified construction plate of the type having a slab made of castable material, at least one wooden beam extending along a face of the slab and spaced therefrom and a plurality of spiked plates connected between the wooden beam and the slab with a gap opening formed between the wooden beam and the slab which is at least sufficiently large to accommodate at least some building linage, the spike plates each having spikes engaging a side of the beam and at least a portion engaging the slab with no spikes in the gap opening, the method comprising:
first attaching said spike plates to said beam, and thereafter casting the slab and fixing the spike plates to the castable material during the casting thereby achieving attachment by means of a hardening reaction of said castable material.