CA1194706A - Shuttering elements - Google Patents
Shuttering elementsInfo
- Publication number
- CA1194706A CA1194706A CA000418729A CA418729A CA1194706A CA 1194706 A CA1194706 A CA 1194706A CA 000418729 A CA000418729 A CA 000418729A CA 418729 A CA418729 A CA 418729A CA 1194706 A CA1194706 A CA 1194706A
- Authority
- CA
- Canada
- Prior art keywords
- panel
- webs
- cms
- casing
- panels
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
This invention relates to shuttering or sheathing elements of hard expanded plastics material for construction of buildings by the concrete casing method, of the kind comprising two mutually parallel panels or slabs having a tongued and grooved form at their edges and webs interconnecting the panels. According to the invention the panel forming the outer casing is considerably thicker than the panel of the element forming the inner casing.
This invention relates to shuttering or sheathing elements of hard expanded plastics material for construction of buildings by the concrete casing method, of the kind comprising two mutually parallel panels or slabs having a tongued and grooved form at their edges and webs interconnecting the panels. According to the invention the panel forming the outer casing is considerably thicker than the panel of the element forming the inner casing.
Description
7~)~
The present invention relates to a shuttering or shea-thing element of hard expanded plastics material for use in the concrete casing method of construction, comprising two panels arranged para:llel to each other and having a tongue and groove structure at theiredges and webs inter-connecting the panels.
A shuttering element corresponding to -the type referred -to above is disclosed in the German Patent Secpi-fication No. 1,784,573. The two panels forming the corres-ponding subsequent insula-ting jackets are iden-tical in thickness in this element. This has the disadvantage that, since the thickness of the panels is relatively large to ensure a very satisfactory heat barrier, the period of vapour travel -through the cavi-ty-side panel forming the inner jacke-t is of considerable leng-th. The humidity exchange be-tween the wall of the structure and the internal space is thereby completed in comparatively sluggish manner, which has an unfavourable effect on the interior environrnent. It has been observed moreover that -the possibility of anchoring fastening means, e.g. dowels, needs improving so -that even heavy objects may be fastened -to the walls by means of simple dowe1s.
The present ivnention provides an improved shut-tering elemen-t of the type referred to above, so that, whilst ensuring an excellen-t heat barrier, a comparatively rapid vapour permeability at the interior side, a more sa-tis-factory exploita-tion of the poured concrete as a heat s-tore, as well as secure anchoring of fastening means, are accom-plished.
; .~.
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The present invention thus provides a shuttering or sheathing element of hard expanded plastics material for use in the concre-te casing method of construction, compris-ing two mutually parallel panels with a -tongued and grooved structure at their edges and webs connecting the panels, wherein the panel forming the ou-ter casing is thicker than the panel Eorming the inner casing.
Under retention of very satisfac-tory hea-t barrier action, the thinner panel subsequently situated a-t -the inner side simultaneously improves vapour permeabili-ty from -the inner side, so that humidity may penetrate compara-tively rapidly from the interior volume into the concrete core presen-t in the shu-ttering elements assembled and filled wi-th lS concrete, so that the feature of the interior environmen-t depending on humidity is rapidly controlled. On the o-ther hand, the concrete core may also be exploited more satisfactorily as a heat store, since it is reached more rapidly by the heat of the room, and conversely can return compara-tively more stored heat into the room. Because of the comparatively thin panel forming the inner jacket or the inner side of the room, longer fas-tening means being dowels in par-ticular, penetrate to an adequate depth into -the concrete and provide a better hold thereby, so -that even heavy objects may be fastened to a wall of this nature.
The element includes Z-shaped webs, -the portions of the thicker panels at least which lie opposite to the central part of the webs being recessed.
.. ..
'7~?~
1 Also, the connecting elements of the webs terminate flush with the panel edge and the extremity of the central web sections, and the inner horizontal portion of the connecting elernents have a curved outline shape.
A structural shuttering or sheathing element of this kin~ has an increased breaking strain, tha-t is, where rammed concrete or plastic concrete is used. In ~the first case, shrinkage points or cavlties are no longer ]0 produced during ramming directly below the downwardly directed horizontal surfaces of the connecting elements of the webs, since the ramming tool may conveniently reach these points or reliably carry concrete in the direction towards ~these points. A separation can no longer occur at these points even upon pouring plastic concrete, since porportions of coarser grit or gravel of the concrete can also reach these points.
Furthermore, an increase in strength is also obtained by the fact that more concrete may be introduced into at least some of the gaps between the panel and ~eb, so that a thicker concrete weh is formed.
In order that the invention may be more ~learly understood, reference will now be made to the accompanying drawings which show one embodiment thereof by way of example and in which:-Figure 1 shows an end view of the element, Figure 2 shows a plan view corresponding to thearro~l A of Figure 1, and Figure 3 shows a plrtial cross-sectional il-lustra-tion along the line III-III of Figure 2.
.
Referrin~ to Fi~ures 1 and 2, the shuttering or sheathing element 1 which is for use in the construction of buildings by the concrete casing construction method, comprises two 5 mutually parallel plastics m~terial panels or slabs
The present invention relates to a shuttering or shea-thing element of hard expanded plastics material for use in the concrete casing method of construction, comprising two panels arranged para:llel to each other and having a tongue and groove structure at theiredges and webs inter-connecting the panels.
A shuttering element corresponding to -the type referred -to above is disclosed in the German Patent Secpi-fication No. 1,784,573. The two panels forming the corres-ponding subsequent insula-ting jackets are iden-tical in thickness in this element. This has the disadvantage that, since the thickness of the panels is relatively large to ensure a very satisfactory heat barrier, the period of vapour travel -through the cavi-ty-side panel forming the inner jacke-t is of considerable leng-th. The humidity exchange be-tween the wall of the structure and the internal space is thereby completed in comparatively sluggish manner, which has an unfavourable effect on the interior environrnent. It has been observed moreover that -the possibility of anchoring fastening means, e.g. dowels, needs improving so -that even heavy objects may be fastened -to the walls by means of simple dowe1s.
The present ivnention provides an improved shut-tering elemen-t of the type referred to above, so that, whilst ensuring an excellen-t heat barrier, a comparatively rapid vapour permeability at the interior side, a more sa-tis-factory exploita-tion of the poured concrete as a heat s-tore, as well as secure anchoring of fastening means, are accom-plished.
; .~.
;~'~.
:~.c,~ a)~
The present invention thus provides a shuttering or sheathing element of hard expanded plastics material for use in the concre-te casing method of construction, compris-ing two mutually parallel panels with a -tongued and grooved structure at their edges and webs connecting the panels, wherein the panel forming the ou-ter casing is thicker than the panel Eorming the inner casing.
Under retention of very satisfac-tory hea-t barrier action, the thinner panel subsequently situated a-t -the inner side simultaneously improves vapour permeabili-ty from -the inner side, so that humidity may penetrate compara-tively rapidly from the interior volume into the concrete core presen-t in the shu-ttering elements assembled and filled wi-th lS concrete, so that the feature of the interior environmen-t depending on humidity is rapidly controlled. On the o-ther hand, the concrete core may also be exploited more satisfactorily as a heat store, since it is reached more rapidly by the heat of the room, and conversely can return compara-tively more stored heat into the room. Because of the comparatively thin panel forming the inner jacket or the inner side of the room, longer fas-tening means being dowels in par-ticular, penetrate to an adequate depth into -the concrete and provide a better hold thereby, so -that even heavy objects may be fastened to a wall of this nature.
The element includes Z-shaped webs, -the portions of the thicker panels at least which lie opposite to the central part of the webs being recessed.
.. ..
'7~?~
1 Also, the connecting elements of the webs terminate flush with the panel edge and the extremity of the central web sections, and the inner horizontal portion of the connecting elernents have a curved outline shape.
A structural shuttering or sheathing element of this kin~ has an increased breaking strain, tha-t is, where rammed concrete or plastic concrete is used. In ~the first case, shrinkage points or cavlties are no longer ]0 produced during ramming directly below the downwardly directed horizontal surfaces of the connecting elements of the webs, since the ramming tool may conveniently reach these points or reliably carry concrete in the direction towards ~these points. A separation can no longer occur at these points even upon pouring plastic concrete, since porportions of coarser grit or gravel of the concrete can also reach these points.
Furthermore, an increase in strength is also obtained by the fact that more concrete may be introduced into at least some of the gaps between the panel and ~eb, so that a thicker concrete weh is formed.
In order that the invention may be more ~learly understood, reference will now be made to the accompanying drawings which show one embodiment thereof by way of example and in which:-Figure 1 shows an end view of the element, Figure 2 shows a plan view corresponding to thearro~l A of Figure 1, and Figure 3 shows a plrtial cross-sectional il-lustra-tion along the line III-III of Figure 2.
.
Referrin~ to Fi~ures 1 and 2, the shuttering or sheathing element 1 which is for use in the construction of buildings by the concrete casing construction method, comprises two 5 mutually parallel plastics m~terial panels or slabs
2 and 3 of hard expandcd plastics material, e.g.
styrofoam. At their edges or narrow sides, the panels are provided with a configuration consisting of a groove 4 and tongue 5, in conventional manner. The 10 panel forming the outer casing is of thicker construction than the other and is utilised to form an external jacket having a po~erful heat barrier action, for the outer walls of the building. In the example, the panel 2 is considerably thicker than the other panel 3, e.g. three 15 times as thick. ~s a rule, the thickness of the outer panel 2 will be of the order of magnitude of 4 cms -to 20 cms and ~ill preferably amount to say 12 cms; the thickness o~ the inner panel or slab 3 ~ill be of the order of magnitude of 2 cms to 8 cms and will pre~erably 20 a~ount to say 5 cms.
Furthermore, the tongued and grooved configuration 4, 5 of the thicker panel 2 is also made wider as compared to that of the thinner panel ~. This greater size of the one tongued and grooved structure con-trib-25 utes to firmer cohesion between the assembled shutteringelements under appropria-tely close tolerances, and is moreover less liable to incur breakage during trans-portation and handling of the elements.
The panels 2, 3 are preferably interconnected by 30 Z-shaped webs 6 and 7. The central part 6a, 7a of the ., ~9~'7~
1 webs extend~ at both extremities up to the edges or narrow sides of the panels 2, 3 and may be provided at one end of the element with a stud 8 and at the other end with a corresponding recess 9. Moreover, the areas 6b and 7b of the webs directly opposed to the panels are preferably made in rounded or polygonal form or are formed in curved manner in another way (Figure 2). The connecting elements 6c and 7c, resp-ectively of the webs 6 and 7 extend over say half the height of the panels 2, 3 and at their one end terminate in flush and equiplanar manner with the panel edge and the end of the central part 6a, 7a of the webs. On the other hand, their inner horizontal section 6d and 7d, respectively, is rounded in outline or made curved in another manner, as clearly apparent from Figure 3.
At least the thicker panel 2 of the element 1 has recesses 10 placed opposite to the sections 6b and 7b of the webs 6 and 7 and allow of thicker concrete coupling webs being formed subsequently in the gaps delimited thereby.
The webs 6, 7 may comprise means for fixing conventional reinforcing fittings. As apparent from Figure 2, sections 11 which receive or fix reinforcing fittings 12 may be integrated in the areas of transition from the connecting elements 6c, 7c to the thinner panel 3.
As apparent from Figures 1 and 2 and especially from Figure 2, the Z-shaped webs 6, 7 of the element 1 are turned with respect to each other to establish mirror
styrofoam. At their edges or narrow sides, the panels are provided with a configuration consisting of a groove 4 and tongue 5, in conventional manner. The 10 panel forming the outer casing is of thicker construction than the other and is utilised to form an external jacket having a po~erful heat barrier action, for the outer walls of the building. In the example, the panel 2 is considerably thicker than the other panel 3, e.g. three 15 times as thick. ~s a rule, the thickness of the outer panel 2 will be of the order of magnitude of 4 cms -to 20 cms and ~ill preferably amount to say 12 cms; the thickness o~ the inner panel or slab 3 ~ill be of the order of magnitude of 2 cms to 8 cms and will pre~erably 20 a~ount to say 5 cms.
Furthermore, the tongued and grooved configuration 4, 5 of the thicker panel 2 is also made wider as compared to that of the thinner panel ~. This greater size of the one tongued and grooved structure con-trib-25 utes to firmer cohesion between the assembled shutteringelements under appropria-tely close tolerances, and is moreover less liable to incur breakage during trans-portation and handling of the elements.
The panels 2, 3 are preferably interconnected by 30 Z-shaped webs 6 and 7. The central part 6a, 7a of the ., ~9~'7~
1 webs extend~ at both extremities up to the edges or narrow sides of the panels 2, 3 and may be provided at one end of the element with a stud 8 and at the other end with a corresponding recess 9. Moreover, the areas 6b and 7b of the webs directly opposed to the panels are preferably made in rounded or polygonal form or are formed in curved manner in another way (Figure 2). The connecting elements 6c and 7c, resp-ectively of the webs 6 and 7 extend over say half the height of the panels 2, 3 and at their one end terminate in flush and equiplanar manner with the panel edge and the end of the central part 6a, 7a of the webs. On the other hand, their inner horizontal section 6d and 7d, respectively, is rounded in outline or made curved in another manner, as clearly apparent from Figure 3.
At least the thicker panel 2 of the element 1 has recesses 10 placed opposite to the sections 6b and 7b of the webs 6 and 7 and allow of thicker concrete coupling webs being formed subsequently in the gaps delimited thereby.
The webs 6, 7 may comprise means for fixing conventional reinforcing fittings. As apparent from Figure 2, sections 11 which receive or fix reinforcing fittings 12 may be integrated in the areas of transition from the connecting elements 6c, 7c to the thinner panel 3.
As apparent from Figures 1 and 2 and especially from Figure 2, the Z-shaped webs 6, 7 of the element 1 are turned with respect to each other to establish mirror
3~
1 symmetry. The subsequent result is a meandering p(~th of the concrete poured in, which in particular signifies an increase of the morphological strength of the cured concrete.
In an advantageous development, one feature consists in that preferably the thicker panel 2 forming the outer casing is provided with vertical grooves 13. These grooves ass~re improved adhesion of a pl~ster facing (not shown) on the external surface of the panel 2.
Alternately, or complementarily, horizon-tal grooves 14 may also be incorporated. The grooves have a width of, say, 2 -3 mms. and a~epth of 2 mms.
The shuttering or sheathing element described is advantageously made in modular sizes in length, e.g.
in the sizes 12.5 cms, 25 cms, 50 cms and 100 cms. The height may for example amount to 33.3 cms and the width to 36 cms, for example.
1 symmetry. The subsequent result is a meandering p(~th of the concrete poured in, which in particular signifies an increase of the morphological strength of the cured concrete.
In an advantageous development, one feature consists in that preferably the thicker panel 2 forming the outer casing is provided with vertical grooves 13. These grooves ass~re improved adhesion of a pl~ster facing (not shown) on the external surface of the panel 2.
Alternately, or complementarily, horizon-tal grooves 14 may also be incorporated. The grooves have a width of, say, 2 -3 mms. and a~epth of 2 mms.
The shuttering or sheathing element described is advantageously made in modular sizes in length, e.g.
in the sizes 12.5 cms, 25 cms, 50 cms and 100 cms. The height may for example amount to 33.3 cms and the width to 36 cms, for example.
Claims (3)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A shuttering or sheathing building construc-tion element of rigid expanded plastics material for the concrete casing method of construction, comprising two mutually parallel panels having a tongue and groove struc-ture at their edges, Z-shaped webs connecting the panels, the central section of the Z-webs extending up to the height of the panel edges and having curved marginal areas which areas lie parallel to and face toward the opposite panel, the panel forming the outer casing being thicker than the panel forming the inner casing, the thinner panel thus affords greater permeability to humidity and improved heat exchange compared to the outer panel, the areas of at least the panel forming the outer casing which lie opposite to said curved marginal areas of the Z-webs being recessed, connecting elements of the Z-webs terminating flush with the panel edge and the extremity of the central web sections and the inner horizontal portion of the connecting elements being of curved outline shape and, as seen in plan view, two adjacent Z-webs being turned through 180 degrees with respect to each other in each element.
2. An element according to claim 1, wherein the thickness of the panel forming the outer casing is 4 to 20 cms and the panel forming the inner casing is 2 to 8 cms.
3. An element according to claim 1 or 2, wherein the outer casing panel is approximately 12 cms thick and the ] inner casing panel is approximately 5 cms thick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000418729A CA1194706A (en) | 1982-12-30 | 1982-12-30 | Shuttering elements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000418729A CA1194706A (en) | 1982-12-30 | 1982-12-30 | Shuttering elements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1194706A true CA1194706A (en) | 1985-10-08 |
Family
ID=4124235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000418729A Expired CA1194706A (en) | 1982-12-30 | 1982-12-30 | Shuttering elements |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1194706A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5390459A (en) * | 1993-03-31 | 1995-02-21 | Aab Building System Inc. | Concrete form walls |
| US5657600A (en) * | 1994-06-20 | 1997-08-19 | Aab Building Systems Inc. | Web member for concrete form walls |
| US5887401A (en) * | 1997-07-24 | 1999-03-30 | Eco-Block Llc | Concrete form system |
| US6170220B1 (en) | 1998-01-16 | 2001-01-09 | James Daniel Moore, Jr. | Insulated concrete form |
| US6314697B1 (en) | 1998-10-26 | 2001-11-13 | James D. Moore, Jr. | Concrete form system connector link and method |
| US6318040B1 (en) | 1999-10-25 | 2001-11-20 | James D. Moore, Jr. | Concrete form system and method |
| US6336301B1 (en) * | 1998-11-05 | 2002-01-08 | James D. Moore, Jr. | Concrete form system ledge assembly and method |
| US6438918B2 (en) | 1998-01-16 | 2002-08-27 | Eco-Block | Latching system for components used in forming concrete structures |
| US6481178B2 (en) | 1998-01-16 | 2002-11-19 | Eco-Block, Llc | Tilt-up wall |
| WO2005014948A1 (en) | 2003-08-06 | 2005-02-17 | Canstroy Cz S.R.O. | Insultated concrete wall forming system with hinged bridging webs |
| US7347029B2 (en) | 2002-12-02 | 2008-03-25 | Wostal Terry K | Collapsible concrete forms |
| US10316515B2 (en) | 2016-01-29 | 2019-06-11 | Owens Corning Intellectual Capital, Llc | Structural insulated sheathing |
-
1982
- 1982-12-30 CA CA000418729A patent/CA1194706A/en not_active Expired
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5390459A (en) * | 1993-03-31 | 1995-02-21 | Aab Building System Inc. | Concrete form walls |
| US5657600A (en) * | 1994-06-20 | 1997-08-19 | Aab Building Systems Inc. | Web member for concrete form walls |
| US5809727A (en) * | 1994-06-20 | 1998-09-22 | Aab Building System, Inc. | Web member for concrete form walls |
| USRE41994E1 (en) * | 1994-06-20 | 2010-12-14 | Arxx Building Products, Inc. | Web member for concrete form walls |
| US5887401A (en) * | 1997-07-24 | 1999-03-30 | Eco-Block Llc | Concrete form system |
| US6363683B1 (en) | 1998-01-16 | 2002-04-02 | James Daniel Moore, Jr. | Insulated concrete form |
| US6438918B2 (en) | 1998-01-16 | 2002-08-27 | Eco-Block | Latching system for components used in forming concrete structures |
| US6481178B2 (en) | 1998-01-16 | 2002-11-19 | Eco-Block, Llc | Tilt-up wall |
| US6526713B2 (en) | 1998-01-16 | 2003-03-04 | Eco-Block, Llc | Concrete structure |
| US6609340B2 (en) | 1998-01-16 | 2003-08-26 | Eco-Block, Llc | Concrete structures and methods of forming the same using extenders |
| US6170220B1 (en) | 1998-01-16 | 2001-01-09 | James Daniel Moore, Jr. | Insulated concrete form |
| US6314697B1 (en) | 1998-10-26 | 2001-11-13 | James D. Moore, Jr. | Concrete form system connector link and method |
| US6336301B1 (en) * | 1998-11-05 | 2002-01-08 | James D. Moore, Jr. | Concrete form system ledge assembly and method |
| US6318040B1 (en) | 1999-10-25 | 2001-11-20 | James D. Moore, Jr. | Concrete form system and method |
| US7347029B2 (en) | 2002-12-02 | 2008-03-25 | Wostal Terry K | Collapsible concrete forms |
| WO2005014948A1 (en) | 2003-08-06 | 2005-02-17 | Canstroy Cz S.R.O. | Insultated concrete wall forming system with hinged bridging webs |
| US7082732B2 (en) | 2003-08-06 | 2006-08-01 | Canstroy International Inc. | Insulated concrete wall forming system and hinged bridging webs |
| US10316515B2 (en) | 2016-01-29 | 2019-06-11 | Owens Corning Intellectual Capital, Llc | Structural insulated sheathing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEC | Expiry (correction) | ||
| MKEX | Expiry |