WO1991009180A1

WO1991009180A1 - Edge element

Info

Publication number: WO1991009180A1
Application number: PCT/SE1990/000408
Authority: WO
Inventors: Lars Göran VÄSSMAR
Original assignee: Vaessmar Lars Goeran
Priority date: 1988-12-12
Filing date: 1990-06-12
Publication date: 1991-06-27
Also published as: SE8804475A; SE8904194L; SE466661B; SE8804475D0; SE8904194D0

Abstract

Edge element for production of a heat insulated basement slab, foundation wall, base, cellar or house wall or the like and which elements comprise heat in at least one plane arranged insulating plates (12), preferably of cellular plastic, as a remaining mould for a supporting concrete structure. Along at least some of the end edges of the insulating plates (12) are provided stiffening profiles (17), for stiffening, reinforcement and guiding of end by end opposite to each other situated insulated plates, so that these can absorb the load which is caused by the fresh concrete casted against the insulating plates.

Description

EDGE ELEMENT

The present invention refers to an edge element for pro¬ ducing a heat insulated basement slab, foundation wall, base, cellar or house wall or the like and which elements comprise in at least one plane arranged heat insulating plates preferably of cellular plastic, as remaining mould for a supporting concrete structure.

BACKGROUND OF THE INVENTION

The foundation of villas and similar houses today to a great extent is carried out on ground casted concrete slabs or in situ casted concrete bases. The cellar walls thereafter are build up in a conventional manner or also moulds are erected for casting of the walls in concrete. The casting of the basement slab as well as the base requires erecting of moulds for casting of the walls in concrete, and for this purpose special edge elements of cellular plastics have been developed (Swedish patent application 8701768-7), which are used as remaining moulds along the outer edges of the base¬ ment slab. Also these edge elements of cellular plastics have to be provided with a mould, which prevents the edge element from moving when the concrete is casted into the mould.

THE OBJECT OF THE INVENTION AND MOST ESSENTIAL FEATURES

The object of the invention is to provide the possibility to produce foundation walls, bases, ground casted concrete slabs and even casted cellar walls without using moulds. This task has been solved by at least some of the end edges of the insulating plates being provided with stiffening profiles for stiffening, reinforcing and guiding of end by end opposite to each other situated insulating plates, so that these can absorb the load which is caused by the fresh concrete casted against the insulating plates. DESCRIPTION OF THE DRAWINGS

In the following, the invention will be described in closer detail with reference to embodiments shown in the accompa- nying drawings.

Fig. 1 shows in perspective view an edge element according to the invention positioned on two pressure plates.

Fig. 2 shows a frontal view of the edge element according to Fig. 1.

Fig. 3 shows the edge element according to fig. 1 and 2 in lateral view.

Fig. 4 shows the edge element according to fig. 3 from the above. Fig. 5 shows an edge element in the form of an outwards directed corner in a view from the above.

Fig. 6 shows an edge element in the form of an inwards directed corner in a view from the above.

Fig. 7 shows how a joint at a partition wall can be provided by means of three edge elements.

Fig. 8 shows in a view analogous to that of fig. 2 of a modified design of an edge element.

Fig. 9 shows a section through a part of a ready-built base made with the edge elements according to the invention. Fig. 10 shows a section through a complete cellar wall erected with the edge elements according to the invention.

Fig. 11 shows a lateral view of a modified, simplified edge element according to the invention.

Fig. 12 shows diagrammatically a section through an edge element during the form work.

Fig. 13 is a diagrammatic sectional view of the edge element according to Fig. 12, after completion of the basement slab with a wall element mounted thereon.

Fig. 14 shows a planar view of a console contained in the structure according to fig. 13, shown in a larger scale.

Fig. 15 is a diagrammatic view of the basement slab and the edge element thereof seen from the above, with the tying of the heat insulating plates to the reinforcement of the basement slab.

DESCRIPTION OF THE EMBODIMENTS

In the embodiments shown in fig. 1-10 each edge element 11 consists of two at a distance from and parallel to each other arranged heat insulating plates 12 of a cellular plastics material, viz. an internal isolating plate 12a and an external isolating plate 12b. Between these are provided distance blocks 14, which simultaneously also form aggregate elements. This edge element assembly comprised by the insu¬ lating plates and the distance blocks is held together by means of suitable connection means 15, which may be consti- tuted by a glue joint between the distance blocks and the inside of the insulating plates, but they can also be con¬ stituted by clamping strips 16, which are positioned around the edge element just in front of the distance block respec¬ tively the distance blocks 14 and which effectively keep the members together relatively each other. Since insulating plates of cellular plastic has a small ability to absorb lateral forces, the longitudinal end edges of the edge elements are made stiff by means of stiffening profiles 17. These profiles are preferably placed such that a profile joint never will be just over an edge element joint. Prefe¬ rably the stiffening profiles are placed at the joints with overlap and are connected to each other by means of suitable connecting members 19 which might be plate screws, rivets or also so called press connections, that is the overlapping sheets are punched with a parrot bill tongs, whereby a lug is bent inwards and a simple, but strong connection is provided between the sheets. One advantage of this connec¬ tion technique is that it can be performed on the site by means of a simple cutting tool.

A foundation wall made from the edge elements 11 according to the invention is erected in the following way. Load plates 20. eg. garden plates of concrete, are placed eg. on a capillary breaking screeding layer 32 at a centre distan¬ ce corresponding to the length of the edge elements. The load plates are levelled to the right height, whereby the lower stiffening profiles 17b are placed out and attached to these, eg. by means of a bolt gun. On thus erected stiffe¬ ning profiles 17b, the edge elements are placed end to end to fit- up against each other, whereby in respectively outward going and inwards going corners are used the corner edge elements 21 and 22 shown in figures 5 and 6 and pos¬ sible T-elements, where wall or the base passes over into a partition wall, shown in fig. 7. Before the edge elements are placed on the load plates 20 distance retainers are placed on these and are snapped on to a lower edge reinfor- cement 25.

Upper stiffening profiles 17a are thereafter fixed to the longitudinal end edges of the edge elements. In order for these very light edge elements 11 to absorb the load which poured fresh concrete exerts in the mid space between the insulating plates, the edge elements are hooped preferably just in front of the distance blocks 14 by means of straps 16, which are applied around the outsides of the edge ele¬ ment. Those strap portions 27 which are situated on the top of the edge element between the insulating plates 12a and 12b can be used as supports for holders 28 which can be hooked to said portions for a top edge reinforcement 29.

By this all preparatory works are completed and fresh con- crete can be cast in the interspace 26 between the insula¬ ting plates.

Since the edge elements 11 are open below the fresh concrete will pour out into the interspace between the bottom edge of the edge element and the ground, whereby the concrete takes an angle of repose of about 45° as is shown in fig. 9 and 10.

Instead of binding the the edge elements together by means of the straps 16, these can already be applied from the factory, as is shown in fig. 8. In this modified embodiment the strap is thread through recesses 30 or milled slots in the insulating plates 12a and 12b. The recesses 30 are placed in such distance from the top respectively the bottom edges of the insulating plates 12,13 that the stiffening profiles 17 can be applied on the longitudinal end edges. Also in this embodiment the strap portions 27 between the heat insulating plates 12 can be used as supports for the lower edge reinforcement 25 and the top edge reinforcement 29. The reinforcement is preferably clenched to the strap.

If a complete cellar wall is to be produced, several edge elements 11 are placed on top of each other, such as shown in fig. 10. For this purpose the stiffening profiles 17 can be made two-sided, so that they cooperate with a lower as well with an upper respectively two at the side of each other positioned edge elements. The casting of the fresh concrete is effected successively, that is, a first layer of edge elements is completed and the concrete is casted, before next line of edge elements is positioned on the ready cast edge elements. In this way the edge elements are com¬ pleted turn after turn, until the desired height has been reached.

The stiffening profiles 17 are designed with a shank 31, which is faced outwards, that is, positioned in the external plane of the insulating plates and in this position forms an attachment for facade plates, plaster net, additional or ground insulation on one side of the edge element and on the other side thereof these profiles constitute an attachment for plaster boards, plaster net or the like.

The embodiment shown in fig. 11 illustrates a simple way to build edge supports for casting of a basement slab. In this case load plates 20 are placed out on a capillary breaking screeding layer 32 at a center distance corresponding to the length of the edge elements. A string of stiffening profiles are placed on the load plates and in these stiffening pro¬ files 17b the heat insulating plates 12 are introduced, which can be provided with upper stiffening profiles 17a. The isolating plates 12 are supported by support devices 56, preferably made from a U - formed sheet profile. The whole is kept together by a strap, 16 which either is applied at the rate of the erection of the edge element or the edge element can be delivered with mounted load plates, insula- ting plates and support devices kept together by said strap.

In fig. 12 an embodiment is shown diagrammatically, where the insulating plate is intended to absorb the load from a wall. In this example is shown a ground portion on which is applied a capillary breaking screeding layer 32 according to prevailing regulations. A marking is applied on distance inside the outer edge of the heat insulating element, which is going to be applied. A layer of earth moisture set plaster 33 is provided in the area for the heat insulating element, and in this layer load plates 20 are pressed at a suitable distance from each other, eg. wooden blocks, which are carefully levelled. Thereafter an elongated stiffening profile 17b is mounted on the wooden blocks, which profile in the embodiment shown is U-formed, and which eg. is secu- red by screws in the wooden bocks with the base of the U facing the wooden blocks and with the shanks 31 directed upwards. The external shank 31a is situated outside the outer side of the insulating plate 12, while the other shank 31b is placed in a longitudinal groove 34, on the outside of the insulating plate 12. Thereafter a corresponding stiffe¬ ning profile 17a is mounted at the top side of the insula¬ ting plate, whereby one shank on the likewise U-formed upper stiffening profile 17a meshes in a corresponding slot 34 in the insulating plate. On the outside of this is applied a coating plate 35, which can be a facade base plate, which is screwed in the external shanks 31a on the both stiffening profiles 17 and preferably such that between the facade base plate and the heat insulating element there is a ventilated space 36.

A first layer of bottom insulation 37 is mounted in line with the above mentioned marking, and in a space 38, which is formed by the bottom insulation, the insulation plate 12 and the wooden blocks 20 respectively the bottom formed by the set plaster 33 is filled and packed with a light flowing concrete.

In fig. 13 is shown diagrammatically a corresponding view of a completed basement slab with a wall mounted thereupon. The embodiment corresponds that of fig. 12 except that in side of the heat insulating element 12 facing the internal part of the mould there is a recess 39 into which the concrete fills up.

From the upper end edge against the side of the insulating plate 12, a narrow groove 40 extends obliquely downwards and inwards to a console 41, which in fig. 14 is shown in a view from the top, and which substantially consists of a plate 42 with a right-angular triangular form. At one of the upper acute angles of the triangular plate 42 is fixed a short piece of an L-beam 43, which with one of its shanks extends along one of the cathetuses of the triangular plate and with the other shank directed downwards is placed in the slot 34a in the insulating plate 12, whereby the the first shank on the L-beam will fit up against the upper surface of the insulating plate 12. Hereby the hypotenuse of the triangular plate will lie in the groove 40 and to th inner side of the hypotenuse is fixed a flat iron 44, directed in right angle towards the plane of the triangular plate and in right angle versus the shank of the L-beam 43 bearing against the top side of the insulating plate 12. The flat iron 44 is applied in the extension of the second cathetus of the triangular plate, whereby this flat iron at mounting in the groove 16 will fit up against the inside of the insulating plate 12. The console 41 on the side of the vertical mounted second cathetus changes into a straight projecting attachment portion 45, which thus extends inwards from the insulating plate 12 and at its inner edge is provided with two recesses 46, 47 spaced above each other. In its mounted position in the recess 40 of the insulating plate 12 thus the console 41 bears with the shanks in its L-beam portion 43 against two surfaces of the insulating plate and with its flat iron portion 44 against a further surface on the heat insulation element, while the projecting portion 45 with its recesses 46,47 extends into the mould cavity limited by the insula¬ ting plate.

An edge reinforcement is mounted such, that it extends through said recesses 46, 47 in the attachment 45 and is thereafter bound through holes 47 in the console 41. The lower edge reinforcement 50 as well as the channel system 51 and upper edge reinforcement 52 are mounted, which upper edge reinforcement is bound together with the under edge reinforcement and the channel system.

Loop irons 53 are mounted and bound together with upper edge reinforcement 52, whereupon concrete 54 is casted into the mould. Thereafter the wall 55 can be erected or mounted in a conventional manner, whereby every console 41 from its horizontal L-beam surface by way of the plate 42 transfers the load from the wall to the part 45 of respective console which is embedded in the concrete in the heat insulating basement slab.

In fig. 15 is shown a view from the above diagrammatically the reinforcement and its connection with the consoles 41.

Claims

1. Edge element for producing of a heat insulated basement slab, foundation wall, base, cellar or house wall or the like and which elements comprise heat in at least one plane arranged insulating plates (12,13) preferably of cellular plastic, as a remaining mould for a supporting concrete structure, c h a r a c t e r i z e d t h e r e i n, that along at least some of the end edges of the insulating plates (12) are provided stiffening profiles (17), for stiffening, reinforcement and guiding of end by end opposite to each other situated insulated plates, so that these can absorb the load which is caused by the fresh concrete casted against the insulating plates.

2. Edge element according to claim 1, c h a r a c t e r i z e d t h e r e i n, that the edge elements (11) respectively the lowest line of edge elements are supported by at mutual distance from each other arranged load plates (20), which by means of connec¬ ting means (15) are connected with the edge element and/or its stiffening profile (17).

3. Edge element according to claim 2, c h a r a c t e r i z e d t h e r e i n, that the connecting means (15) is constituted by a clamping strip (16), which is applied around the edge element (11) and the load plate (20) and possibly on the load plate positioned support device (56) for the edge element (11).

4. Edge element according to claim 1, c h a r a c t e r i z e d t h e r e i n, that the stiffening profile (17) is an L-, U-, T-, or H- formed or similar sheet profile, which is formed to at least partly clasp the longitudinal and/or the transversal end edges of the insulating plate (12,13).

5. Edge element according to claim 1 or 2, c h a r a c t e r i z e d t h e r e i n, that each edge element (11) consists of two at a distance from each other arranged, substantially parallel insulating plates (12), which are spaced from each other by means of distance blocks (14) firmly connected with the insulating plates by way of connecting means and/or connecting elements (15,16).

6. Edge element according to claim 5, c h a r a c t e r i z e d t h e r e i n, that the distance blocks (14), which consist of an isolating material, are formed as aggregate elements, and that prefe¬ rably just in front of these are provided connection means, which are constituted by straps (16), applied around the edge element.

7. Edge element according to claim 5, c h a r a c t e r i z e d t h e r e i n, that the shanks (31) of the stiffening profiles (17,18) facing the flatside of the insulating plates are formed as attachments for facade plates, plaster nets, additional insulation, plaster boards and the like.

8. Edge element according to any or some of preceeding claims, c h a r a c t e r i z e d t h e r e i n, that the stiffening profiles (17,18) are sheet profiles, which at the joints are overlapping and connected with each other by means of joining means (19) in the form of plate screws, rivets, press connections or the like.

9. Edge element according to claim 5, c h a r a c t e r i z e d t h e r e i , that in the space (26) between the insulating plates (12,13) are placed support means (24,27,28) for supporting upper and/or lower edge reinforcement (29,25).

10. Edge element according to claim 2, c h a r a c t e r i z e d t h e r e i n, that the straps are positioned at some distance from and inside the upper and lower edge of the insulating plates in for this purpose made grooves or recesses (30), and that strap portions (27) situated between the insulating plates form support means for the longitudinal reinforcement (25,29).

11. Edge element according to claim 2, c h a r a c t e r i z e d t h e r e i n, that the lower stiffening profiles (17,18) of the insulating plates (12,13) are attachable to load plates (20), which are preferably in the form of rectangular concrete plates.

12. Edge element acording to claim 5, c h a r a c t e r i z e d t h e r e i n, that the edge elements are open at the top and the bottom, and that the lowest elements just in front of the element joints are placed on load plates (20), which space the lower opening of the edge elements from the bedding on which the load plates are placed.

13. Edge element according to claim 1, c h a r a c t e r i z e d t h e r e i n, that the edge elements (7) are inserted consoles (18), one of the rear attachment (22) which is situated outside the element and intended to be casted into the basement slab, while the outer walls (32) are intended to be erected on said consoles.

14. Edge element according to claim 13, c h a r a c t e r i z e d t h e r e i n, that the attachment (22) of the console (18) is provided with recesses (23,24), in which the edge reinforcement (25) of the basement slab can be placed, and bracing irons (30) to the upper and/or lower edge reinforcement (29,27) of the basement slab.