CA1075928A - Method and apparatus for holding an insulation board in a concrete form - Google Patents
Method and apparatus for holding an insulation board in a concrete formInfo
- Publication number
- CA1075928A CA1075928A CA338,495A CA338495A CA1075928A CA 1075928 A CA1075928 A CA 1075928A CA 338495 A CA338495 A CA 338495A CA 1075928 A CA1075928 A CA 1075928A
- Authority
- CA
- Canada
- Prior art keywords
- retaining
- clip
- central section
- tie
- section
- 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
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Abstract
ABSTRACT OF THE DISCLOSURE
This invention is concerned with concrete sandwiched walls which are filled by placing an insulating board between the forms for concrete prior to pouring the concrete. The problem to which this invention is addressed is that of providing a simple, inexpensive device which can be utilized in a manner compatible with traditional building methods, for maintaining the insulating board in position during the pouring of the concrete. This is accomplished by an insulating board retaining member centrally secured to a conventional form tie. The retaining member has a central section, a leading section and a trailing section. These are initially substantially flat so that the retaining member can be forced into the form tie to which it is secured, through the insulating board. The leading and trailing sections are then bent to form a U to retain the insulating board. This invention comprises also a building form structure and a building method each utilizing a device in accordance with this invention.
This invention is concerned with concrete sandwiched walls which are filled by placing an insulating board between the forms for concrete prior to pouring the concrete. The problem to which this invention is addressed is that of providing a simple, inexpensive device which can be utilized in a manner compatible with traditional building methods, for maintaining the insulating board in position during the pouring of the concrete. This is accomplished by an insulating board retaining member centrally secured to a conventional form tie. The retaining member has a central section, a leading section and a trailing section. These are initially substantially flat so that the retaining member can be forced into the form tie to which it is secured, through the insulating board. The leading and trailing sections are then bent to form a U to retain the insulating board. This invention comprises also a building form structure and a building method each utilizing a device in accordance with this invention.
Description
1~759~1 This invention relates to a form tie and insulatlng board retaining structure, to a form structure including it and to a building method.
Concrete walls have many structural benefits such as strength and durability. A shortcoming is that they have little insulating value. The cold therefore penetrates into wall leaving a cold,damp inner surfaces.
There is also a loss of heat from within residential or commercial structures.
Because of the foregoing problem, and in view of the emphasis now placed on saving energy, concrete sandwich walls are becoming increasingly popular. Such concrete sandwich walls are walls which are poured in place with an insulating board in the centre of the wall.
The insulating board which may for example be a cellular plastic material of the type known under the trade name - styrofoam, is continuous throughout the centre of the wall.
; One of the main problems in building concrete sandwich walls is to secure the insulators in the centre of the wall to prevent it from floating or from moving towards one surface of the wall while the concrete is being poured. It will be appreciated that if dislodgement of the insulation takes place it will be a matter of great difficulty to restore it to its intended position. It may even be necessary to demolish and rebuild the wall.
An object of this invention is therefore to provide a device which will maintain an insulation board firmly in its intended position.
A further object is to provide such device which is compatible with existing building methods.
Concrete walls have many structural benefits such as strength and durability. A shortcoming is that they have little insulating value. The cold therefore penetrates into wall leaving a cold,damp inner surfaces.
There is also a loss of heat from within residential or commercial structures.
Because of the foregoing problem, and in view of the emphasis now placed on saving energy, concrete sandwich walls are becoming increasingly popular. Such concrete sandwich walls are walls which are poured in place with an insulating board in the centre of the wall.
The insulating board which may for example be a cellular plastic material of the type known under the trade name - styrofoam, is continuous throughout the centre of the wall.
; One of the main problems in building concrete sandwich walls is to secure the insulators in the centre of the wall to prevent it from floating or from moving towards one surface of the wall while the concrete is being poured. It will be appreciated that if dislodgement of the insulation takes place it will be a matter of great difficulty to restore it to its intended position. It may even be necessary to demolish and rebuild the wall.
An object of this invention is therefore to provide a device which will maintain an insulation board firmly in its intended position.
A further object is to provide such device which is compatible with existing building methods.
- 2 -:
" 1(~7~9Z8 Another object is to provide such device which can be readily fabricated at a low cost.
In accordance with one aspect of the present invention, an insulating board clip is provided adapted for securement to a form tie connecting forms for concrete to thus provide a retaining member generally centrally secured to the form tie; said clip comprising, - in combination: a central, generally planar plate section;
a first generally planar retaining section integral with said central section and disposed at one end thereof;
a second, generally planar retaining section integral with said central section and disposed at the other end thereof; said first and second retaining sections -~
being generally coplanar with said central section; weakening means between each of said ends of the central section and the respective retainer sections; said weakening means being of the type rendering the respective end sections bendable upon securement of said central section to form a tie, while retaining the securement between the central section and a form tie;
whereby said clip can be secured to a form tie in a generally flat, planar state and, following penetration of the tie and of the flat clip through an insulating board, the retaining sections can be bent to retain the insulation board therebet~een.
In another aspect of the present invention, a .
building member is provided which comprises a form tie for connecting forms for concrete and an insulating board retaining clip member centrally secured to the form tie and comprising, in combination: a central, generally planar plate section; a first 30 generally planar retaining section integral with said central section and disposed at one end thereof; a second, generally planar retaining section integral with said central section .
-3_ `~ 10759Z8 and disposed at the other end thereof; said first and second retaining sections being generally coplanar with said central section; weakening means between each of said ends of the central section and the respective retaining sections; said weakening means being of the type rendering the respective end sections bendable upon securement of said central section to form a tie, while retaining the securement between the central section and said tie.
Preferably, at least one of said retaining sections is shaped for ease of penetration of an insulating board. It is also preferred that one of the retaining sections be pointed for ease of penetration of the insulation board and the other of the retaining sections has a V-shaped notch conforming with -the pointed retaining section so that a series of clips can be punched from a metal strip at virtually no waste. It is also preferred to provide the weakening means such that it is formed by spaced cuts along each side of the clip, the cùts on the side being in alignment with the cuts on the other side to define a plurality of said weakening means at each end of the central section to enable said clip to be shaped to engage different standard thickness of insulation board.
In a still further aspect of the present invention a building method is provided which comprises the steps of erecting a first apertured form panel for concrete, temporarily attaching to its inner face an insulating panel, forcing a form tie having a flat retaining member with a pointed leading 1-surface centrally secured to same through the insulating board and through an aperture in the said form panel and securing said form tie in position, erecting a second apertured panel parallel to the first, with the form tie passing through an aperture in the second form panel, securing the form tie in ~4-1,.,`'~ , .
- ~75928 relation to the second form panel, moving the insulation panel to a central position with respect to the form tie with the pointed leading surface having penetrated through the insulating panel and bending the leading and trailing portions of the flat retaining member to positions flush against the surfaces of the insulating panel and thereafter pouring concrete into the spaces between the insulating panel and the form panels.
~ -4a-In the drawings that illustrate the preferred embodiments of this invention:
Figure 1 is an elevation view illustrating a form tie and insulating board retaining member in accordance with this invention;
Figure 2 is a plan view of the form tie and insulating board retaining member of Figure 1;
Figure 3 is an elevation view similar to figure 1 but showing the retaining member in a position to secure the insulating board;
Figure 4 is a plan view corresponding to Figure 3;
Figure 5 is an elevation view of a wall structure showing the form tie and insulating board retaining member when first inserted;
Fig.ure 6 is an elevation view of the structure in Figure 5 but showing the retaining member in position to .: . secure the insulating board;
Figure 7 is an elevation view of a section of a wall structure illustrating the horizontal and vertical spacing of the form tie and insulating board retaining members;
Figure 8 is a plan view of an alternate embodiment;
Figure 9 is an elevation view of a further alternative ~ :
embodiment; and Figure 10 is a plan view of a further alternative embodiment.
Referring now to Figures 1 and 2 of the drawings, there is illustrated a conventional form tie 10 to which is secured an insulating board retaining member 11.
Retaining member 11 has a central section 12 welded or otherwise join~.d to a central portion of form tie 10 by weld 13. Retaining member 11 also has a leading section 14 and a trailing section lS. Leading section 14 has inclined leading surfaces 16 to provide a point to facilitate penetration of the insulating board. Trailing section 15 has a corresponding V-shaped surfaces, so that a series of retaining members can be stamped from a metal strip with minimum waste of material. The sides of both the leading section 14 and the-trailing section 15 have trans-verse cuts 18 and 19. The cuts 18, on one side, are aligned with the cuts 19 on the other side to define a bend line indicated by dotted line 20. Cuts 18 are sapced from each other so that standard thicknesses of insulating board can be accommodated. For example the spacing between 18 and 18a may be 1/2inch, between 18a and 18b 2 inches and between 18b and 18c 1/2inch, so that by utilizing different bending lines the insulation board that is retained can be 2 inches, 2-1/2 inches or 3 inches in thickness. Figures 3 and 4 illustrate the leading and trailing portions bent down to form plates to retain the insulating board. In this instance, the bend lines ~ 18a and 18c have been utilized so that the horizontal spacing ; 20 between plate means 14 and 15 c~n be 2-1/2 inches.
Figures 5 and 6 illustrate the application of a form tie and insulating board retaining member as part of a building form structure.
In Figure 5 outer form 21 is erected first and braced in place by conventional braces (not shown), insulating board 22 is applied temporarily to form 21 using common nails 23. Form tie 10 with insulating board retaining member 11 in its original flat position is then forced through insulating board 22 and through a preformed hole 23a in form 21. Form tie 10 is then secured in position by a cross brace or whaler (not shown in Figure 5) inserted in whaler hole 24. Inside form 25 is then erected with form 1(~7~928 tie 10 passing through preformed hole 26 and an inside whaler (not shown in figure S) is passed through whaler hole 27.
In the following step, the insulating board 22 is forced over to a central position as shown in figure 6 and sections 14 and 15 are moved downwards to act with central section 11 to give a U-shaped configuration with sections 14 and ! 15 forming plates which lie flat against opposite surfaces of in~ulating board 22. As previously explained appropriate cuts 18 and 19 facilitate the bending operation. The forms are then ready for the pouring of concrete.
As illustrated in Figure 7 the exterior wall forms 21 and 21a will have a number of rows of form ties 10, with the form ties of each row in horizontal alignment to permit the insertion of whaler bars 28.
In the embodiment described in figures 1 to 7, the leading portion of the securing plate was pointed to facilitate penetration of the insulating board. If however vertical strips of insulating board of the same width as the spacing between the ties 10 are used then it would be unnecessary to have a pointed end as the retaining plate 29 could be forced into the side edge of the insulating board and could then be rectangular as shown in Figure 8. In figure 8 the retaining plate 29 is rectangular and has lateral cuts 30 similar to cuts 18 and 19 of the first embodiment. A further possibility would be to orient the plate so that it bends about a vertical bending line as shown in figure 9 which shows rectangular plate 31 in a vertical plane and secured to tie 10, In the case of figure 9 it would be necessary to bend the plates of alternate rows in different horizontal directions to hold both sides of the vertical insulating strips.
' , iO7~9Z8 In another alternative embodiment shown in Figure 10, the retaining member is a bar 31 having a central portion 32 and bendable portions 33 and 34.
It will be appreciated that this invention provides a simple and economical retainer for insulating board which is compatible into existing building procedures and yet which will hold the insulating board firmly while the concrete is being poured.
.
" 1(~7~9Z8 Another object is to provide such device which can be readily fabricated at a low cost.
In accordance with one aspect of the present invention, an insulating board clip is provided adapted for securement to a form tie connecting forms for concrete to thus provide a retaining member generally centrally secured to the form tie; said clip comprising, - in combination: a central, generally planar plate section;
a first generally planar retaining section integral with said central section and disposed at one end thereof;
a second, generally planar retaining section integral with said central section and disposed at the other end thereof; said first and second retaining sections -~
being generally coplanar with said central section; weakening means between each of said ends of the central section and the respective retainer sections; said weakening means being of the type rendering the respective end sections bendable upon securement of said central section to form a tie, while retaining the securement between the central section and a form tie;
whereby said clip can be secured to a form tie in a generally flat, planar state and, following penetration of the tie and of the flat clip through an insulating board, the retaining sections can be bent to retain the insulation board therebet~een.
In another aspect of the present invention, a .
building member is provided which comprises a form tie for connecting forms for concrete and an insulating board retaining clip member centrally secured to the form tie and comprising, in combination: a central, generally planar plate section; a first 30 generally planar retaining section integral with said central section and disposed at one end thereof; a second, generally planar retaining section integral with said central section .
-3_ `~ 10759Z8 and disposed at the other end thereof; said first and second retaining sections being generally coplanar with said central section; weakening means between each of said ends of the central section and the respective retaining sections; said weakening means being of the type rendering the respective end sections bendable upon securement of said central section to form a tie, while retaining the securement between the central section and said tie.
Preferably, at least one of said retaining sections is shaped for ease of penetration of an insulating board. It is also preferred that one of the retaining sections be pointed for ease of penetration of the insulation board and the other of the retaining sections has a V-shaped notch conforming with -the pointed retaining section so that a series of clips can be punched from a metal strip at virtually no waste. It is also preferred to provide the weakening means such that it is formed by spaced cuts along each side of the clip, the cùts on the side being in alignment with the cuts on the other side to define a plurality of said weakening means at each end of the central section to enable said clip to be shaped to engage different standard thickness of insulation board.
In a still further aspect of the present invention a building method is provided which comprises the steps of erecting a first apertured form panel for concrete, temporarily attaching to its inner face an insulating panel, forcing a form tie having a flat retaining member with a pointed leading 1-surface centrally secured to same through the insulating board and through an aperture in the said form panel and securing said form tie in position, erecting a second apertured panel parallel to the first, with the form tie passing through an aperture in the second form panel, securing the form tie in ~4-1,.,`'~ , .
- ~75928 relation to the second form panel, moving the insulation panel to a central position with respect to the form tie with the pointed leading surface having penetrated through the insulating panel and bending the leading and trailing portions of the flat retaining member to positions flush against the surfaces of the insulating panel and thereafter pouring concrete into the spaces between the insulating panel and the form panels.
~ -4a-In the drawings that illustrate the preferred embodiments of this invention:
Figure 1 is an elevation view illustrating a form tie and insulating board retaining member in accordance with this invention;
Figure 2 is a plan view of the form tie and insulating board retaining member of Figure 1;
Figure 3 is an elevation view similar to figure 1 but showing the retaining member in a position to secure the insulating board;
Figure 4 is a plan view corresponding to Figure 3;
Figure 5 is an elevation view of a wall structure showing the form tie and insulating board retaining member when first inserted;
Fig.ure 6 is an elevation view of the structure in Figure 5 but showing the retaining member in position to .: . secure the insulating board;
Figure 7 is an elevation view of a section of a wall structure illustrating the horizontal and vertical spacing of the form tie and insulating board retaining members;
Figure 8 is a plan view of an alternate embodiment;
Figure 9 is an elevation view of a further alternative ~ :
embodiment; and Figure 10 is a plan view of a further alternative embodiment.
Referring now to Figures 1 and 2 of the drawings, there is illustrated a conventional form tie 10 to which is secured an insulating board retaining member 11.
Retaining member 11 has a central section 12 welded or otherwise join~.d to a central portion of form tie 10 by weld 13. Retaining member 11 also has a leading section 14 and a trailing section lS. Leading section 14 has inclined leading surfaces 16 to provide a point to facilitate penetration of the insulating board. Trailing section 15 has a corresponding V-shaped surfaces, so that a series of retaining members can be stamped from a metal strip with minimum waste of material. The sides of both the leading section 14 and the-trailing section 15 have trans-verse cuts 18 and 19. The cuts 18, on one side, are aligned with the cuts 19 on the other side to define a bend line indicated by dotted line 20. Cuts 18 are sapced from each other so that standard thicknesses of insulating board can be accommodated. For example the spacing between 18 and 18a may be 1/2inch, between 18a and 18b 2 inches and between 18b and 18c 1/2inch, so that by utilizing different bending lines the insulation board that is retained can be 2 inches, 2-1/2 inches or 3 inches in thickness. Figures 3 and 4 illustrate the leading and trailing portions bent down to form plates to retain the insulating board. In this instance, the bend lines ~ 18a and 18c have been utilized so that the horizontal spacing ; 20 between plate means 14 and 15 c~n be 2-1/2 inches.
Figures 5 and 6 illustrate the application of a form tie and insulating board retaining member as part of a building form structure.
In Figure 5 outer form 21 is erected first and braced in place by conventional braces (not shown), insulating board 22 is applied temporarily to form 21 using common nails 23. Form tie 10 with insulating board retaining member 11 in its original flat position is then forced through insulating board 22 and through a preformed hole 23a in form 21. Form tie 10 is then secured in position by a cross brace or whaler (not shown in Figure 5) inserted in whaler hole 24. Inside form 25 is then erected with form 1(~7~928 tie 10 passing through preformed hole 26 and an inside whaler (not shown in figure S) is passed through whaler hole 27.
In the following step, the insulating board 22 is forced over to a central position as shown in figure 6 and sections 14 and 15 are moved downwards to act with central section 11 to give a U-shaped configuration with sections 14 and ! 15 forming plates which lie flat against opposite surfaces of in~ulating board 22. As previously explained appropriate cuts 18 and 19 facilitate the bending operation. The forms are then ready for the pouring of concrete.
As illustrated in Figure 7 the exterior wall forms 21 and 21a will have a number of rows of form ties 10, with the form ties of each row in horizontal alignment to permit the insertion of whaler bars 28.
In the embodiment described in figures 1 to 7, the leading portion of the securing plate was pointed to facilitate penetration of the insulating board. If however vertical strips of insulating board of the same width as the spacing between the ties 10 are used then it would be unnecessary to have a pointed end as the retaining plate 29 could be forced into the side edge of the insulating board and could then be rectangular as shown in Figure 8. In figure 8 the retaining plate 29 is rectangular and has lateral cuts 30 similar to cuts 18 and 19 of the first embodiment. A further possibility would be to orient the plate so that it bends about a vertical bending line as shown in figure 9 which shows rectangular plate 31 in a vertical plane and secured to tie 10, In the case of figure 9 it would be necessary to bend the plates of alternate rows in different horizontal directions to hold both sides of the vertical insulating strips.
' , iO7~9Z8 In another alternative embodiment shown in Figure 10, the retaining member is a bar 31 having a central portion 32 and bendable portions 33 and 34.
It will be appreciated that this invention provides a simple and economical retainer for insulating board which is compatible into existing building procedures and yet which will hold the insulating board firmly while the concrete is being poured.
.
Claims (12)
1. An insulating board clip adapted for securement to a form tie connecting forms for concrete to thus provide a retaining member generally centrally secured to the form tie;
said clip comprising, in combination:
(a) a central, generally planar plate section;
(b) a first generally planar retaining section integral with said central section and disposed at one end thereof;
(c) a second, generally planar retaining section integral with said central section and disposed at the other end thereof;
(d) said first and second retaining sections being generally coplanar with said central section;
(e) weakening means between each of said ends of the central section and the respective retainer sections;
(f) said weakening means being of the type rendering the respective end sections bendable upon securement of said central section to a form tie, while retaining the securement between the central section and a form tie;
whereby said clip can be secured to a form tie in a generally flat, planar state and, following penetration of the tie end of the flat clip through an insulating board, the retaining sections can be bent to retain the insulation board therebetween.
said clip comprising, in combination:
(a) a central, generally planar plate section;
(b) a first generally planar retaining section integral with said central section and disposed at one end thereof;
(c) a second, generally planar retaining section integral with said central section and disposed at the other end thereof;
(d) said first and second retaining sections being generally coplanar with said central section;
(e) weakening means between each of said ends of the central section and the respective retainer sections;
(f) said weakening means being of the type rendering the respective end sections bendable upon securement of said central section to a form tie, while retaining the securement between the central section and a form tie;
whereby said clip can be secured to a form tie in a generally flat, planar state and, following penetration of the tie end of the flat clip through an insulating board, the retaining sections can be bent to retain the insulation board therebetween.
2. A clip as claimed in claim 1 wherein at least one of said retaining sections is shaped for ease of penetration of an insulating board.
3. A clip as claimed in claim 2, in which one of the retaining sections is pointed for ease of penetration of the insulation board and the other of the retaining sections has a V-shaped notch conforming with the pointed retaining section so that a series of clips can be punched from a metal strip at virtually no waste.
4. A clip as claimed in Claims 1, 2 or 3, wherein the weakening means is formed by spaced cuts along each side of the clip, the cuts on one side being in alignment with the cuts on the other side to define a plurality of said weakening means at each end of the central section to enable said clip to be shaped to engage different standard thickness of insulation board.
5. A building member comprising a form tie for connecting forms for concrete and an insulating board retaining clip member centrally secured to the form tie and comprising, in combination:
(a) a central, generally planar plate section;
(b) a first generally planar retaining section integral with said central section and disposed at one end thereof;
(c) a second, generally planar retaining section integral with said central section and disposed at the other end thereof;
(d) said first and second retaining sections being generally coplanar with said central section;
(e) weakening means between each of said ends of the central section and the respective retaining sections;
(f) said weakening means being of the type rendering the respective end sections bendable upon securement of said central section to a form tie, while retaining the securement between the central section and said tie.
(a) a central, generally planar plate section;
(b) a first generally planar retaining section integral with said central section and disposed at one end thereof;
(c) a second, generally planar retaining section integral with said central section and disposed at the other end thereof;
(d) said first and second retaining sections being generally coplanar with said central section;
(e) weakening means between each of said ends of the central section and the respective retaining sections;
(f) said weakening means being of the type rendering the respective end sections bendable upon securement of said central section to a form tie, while retaining the securement between the central section and said tie.
6. A building member as in Claim 5 in which the form tie is an elongated plate having whaler holes adjacent each end and in which the central section of the clip is secured to an edge of the form tie so that the bending to form a U will be along horizontal bending lines.
7. A building member as in Claim 6 in which at least one of said retaining sections is shaped for ease of penetration of an insulating board.
8. A building member as claimed in claim 7, in which one of the retaining sections is pointed for ease of penetration of the insulating board and the other of the retaining sections has a V-shaped notch conforming with the pointed retaining section so that a series of clips can be punched from a metal strip at virtually no waste, prior to securement thereof to said tie.
9. A building member as in Claims 5, 7 or 8, in which the weakening means is formed by spaced cuts along each side of the clip, the cuts on one side being in alignment with the cuts on the other side to define a plurality of said weakening means at each end of the central section to enable said clip to be shaped to engage different standard thickness of insulation board.
10. A building form structure comprising spaced forms for concrete and insulating panel between said forms and a plurality of building members as in claim 6, 7 or 8 arranged in a plurality of rows, each row having a plurality of building members to locate said insulating panel in position between said forms and spaced from each of its forms.
11. A building method comprising the steps of erecting a first apertured form panel for concrete, temporarily attaching to its inner face an insulating panel, forcing a form tie having a flat retaining member with a pointed leading surface centrally secured to same through the insulating board and through an aperture in the said form panel and securing said form tie in position, erecting a second apertured panel parallel to the first, with the form tie passing through an aperture in the second form panel, securing the form tie in relation to the second form panel, moving the insulating panel to a central position with respect to the form tie with the pointed leading surface having penetrated through the insulating panel and bending the leading and trailing portions of the flat retaining member to positions flush against the surfaces of the insulating panel and thereafter pouring concrete into the spaces between the insulating panel and the form panels.
12. A building method as in Claim 11 in which the leading and trailing portions of the flat retaining member are defined by pairs of aligned cuts, the pairs of aligned cuts being spaced by a distance equal to the thickness of the insulating panel.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US8220779A | 1979-10-05 | 1979-10-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1075928A true CA1075928A (en) | 1980-04-22 |
Family
ID=22169736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA338,495A Expired CA1075928A (en) | 1979-10-05 | 1979-10-26 | Method and apparatus for holding an insulation board in a concrete form |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1075928A (en) |
-
1979
- 1979-10-26 CA CA338,495A patent/CA1075928A/en not_active Expired
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| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |