CA2594374C - Extruded permanent form-work for concrete - Google Patents
Extruded permanent form-work for concrete Download PDFInfo
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- CA2594374C CA2594374C CA2594374A CA2594374A CA2594374C CA 2594374 C CA2594374 C CA 2594374C CA 2594374 A CA2594374 A CA 2594374A CA 2594374 A CA2594374 A CA 2594374A CA 2594374 C CA2594374 C CA 2594374C
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- wall
- panels
- wall panel
- walls
- panel
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
- E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
- E04B2/8635—Walls made by casting, pouring, or tamping in situ made in permanent forms with ties attached to the inner faces of the forms
- E04B2/8641—Walls made by casting, pouring, or tamping in situ made in permanent forms with ties attached to the inner faces of the forms using dovetail-type connections
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- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
A set of extruded panels is provided which can be assembled on site to create a permanent form-work for concrete. The set includes inside and outside extruded side wall panels which are arranged to be connected edge to edge to form inside and outside walls. Longitudinally spaced connecting wall panels span between the inside and outside walls at spaced positions across the width of the walls to hold the walls apart and define a hollow interior therebetween including a plurality of interconnected cells with a plurality of holes for communication of concrete and reinforcing bars between each cell and the next. Each connecting wall panel has T-shaped connectors at each edge for attachment to corresponding C-shaped receptacles on the side wall panels. Rigid foam insulation is inserted at the outside wall. The inside wall panels are arranged to support without bowing cast concrete poured into the interior within each cell and three different arrangements are shown to support the inside wall each including a wall portion at right angles to the inside wall and between the connecting walls. In one, an integral double wall is provided. In a second, a short support wall extends to a supplementary wall parallel to the inside wall and in the third, a support wall identical to the connector walls spans between the inside and outside walls.
Description
EXTRUDED PERMANENT FORM-WORK FOR CONCRETE
This invention relates to a set of extruded fomrwork panels which are interconnected in use to define a form-work for casting of concrete and which are intended to remain in place after the concrete is cured to define inner and outer surfaces of the finished concrete structure.
There have been many attempts over the years to generate an altemative form of building construction which utilizes permanent forms into which concrete Is poured and cured to provide the structural strength for the exterior form work. The use of plastic extruded panels for the formwo~k has previously been proposed and these can be readily assembled on sight to provide a sbucture into which reinforcing bars can be inserted and into which the concrete can be inserted and into which the concrete can be poured. The plastic panels then remain In place forming inside and outside surfaces for the concrete structure thus avoiding the necessity for additional dadding and providing in one step a finished attractive appearance.
One example and arrangement of this type is shown in Canadian Patent 967,816 (Rodighiero et ai) issued November 19, 1974 which discloses inside wall panels and outside wall panels which are connected edge to edge so as to form inside and outside walls respectively, The panels are connected edge to edge and supported in their spaced position by transverse connecting walls. Embodiments are disclosed in which an insulation material can be applied between the concrete and one of the side walls. The side wall which supports the concrete'is prevented from bowing primarRy by transversely extendicg stiffening ribs. However additionai wall portions can be provided connected to the side wall and extending generally at right angles thereto so as to hold the side wall against bowing outwardly under the weight of the concrete.
A further arrangement which has achieved some commercial success is shown in US Patent 5,216,863 (Nessa et al) issued June 8, 1993. This discloses a generally cyiindrical structure with one open face where the cylindrical elements slide each Into the next using male and female couplings to form a similar permanent farm work structure to develop the above patent but in which the structure takes the form of a series of interconnected coiumns.
Canadian Patents 2,215,939, 2,218.600 and 2,226,497 of Piccone disclose various constructions of form work of a similar nature to that shown in the above patent of Rodighiero but many shaped to form the coiumn strueture similar to that of Nessa.
It has been determined recently that the most commerciai structure for arrangements of this type is one in which the inside and outside walls are generally flat and of course the materials are kept substantialiy to a minimum so as to reduce the construction cost of the initiai formwork. It Is of course important also to minimize the labour Involved in assembly of the structures on site.
One problem which arises in meating the above criteria 'is to ensure that the structure is stable and prevents the bowing of the side wall which is contact with the concrete.
This invention relates to a set of extruded fomrwork panels which are interconnected in use to define a form-work for casting of concrete and which are intended to remain in place after the concrete is cured to define inner and outer surfaces of the finished concrete structure.
There have been many attempts over the years to generate an altemative form of building construction which utilizes permanent forms into which concrete Is poured and cured to provide the structural strength for the exterior form work. The use of plastic extruded panels for the formwo~k has previously been proposed and these can be readily assembled on sight to provide a sbucture into which reinforcing bars can be inserted and into which the concrete can be inserted and into which the concrete can be poured. The plastic panels then remain In place forming inside and outside surfaces for the concrete structure thus avoiding the necessity for additional dadding and providing in one step a finished attractive appearance.
One example and arrangement of this type is shown in Canadian Patent 967,816 (Rodighiero et ai) issued November 19, 1974 which discloses inside wall panels and outside wall panels which are connected edge to edge so as to form inside and outside walls respectively, The panels are connected edge to edge and supported in their spaced position by transverse connecting walls. Embodiments are disclosed in which an insulation material can be applied between the concrete and one of the side walls. The side wall which supports the concrete'is prevented from bowing primarRy by transversely extendicg stiffening ribs. However additionai wall portions can be provided connected to the side wall and extending generally at right angles thereto so as to hold the side wall against bowing outwardly under the weight of the concrete.
A further arrangement which has achieved some commercial success is shown in US Patent 5,216,863 (Nessa et al) issued June 8, 1993. This discloses a generally cyiindrical structure with one open face where the cylindrical elements slide each Into the next using male and female couplings to form a similar permanent farm work structure to develop the above patent but in which the structure takes the form of a series of interconnected coiumns.
Canadian Patents 2,215,939, 2,218.600 and 2,226,497 of Piccone disclose various constructions of form work of a similar nature to that shown in the above patent of Rodighiero but many shaped to form the coiumn strueture similar to that of Nessa.
It has been determined recently that the most commerciai structure for arrangements of this type is one in which the inside and outside walls are generally flat and of course the materials are kept substantialiy to a minimum so as to reduce the construction cost of the initiai formwork. It Is of course important also to minimize the labour Involved in assembly of the structures on site.
One problem which arises in meating the above criteria 'is to ensure that the structure is stable and prevents the bowing of the side wall which is contact with the concrete.
SUMMARY OF THE INVENTION
It is one object of the present invention, therefore, to provide an improved set of extnided form-work panels for use in defining a form work for casting of concrete structures.
According to one aspect of the invention there is provided a set of extruded panels for use in constructing a form-work for concrete comprising_ a pluralfty of first side wall panels which are extruded longitudinally to define a constant cross section along a length of the panel including two opposed side edges and an intermediate panel wall portion and which are arranged to be connected edge to edge to form a first side wall with a height of the first side wall defined by the length of the panels and a width of each panel defining a part of a width of the first side wall;
a plurality of second side wall panels which are extruded longitudinally to define a constant cross section along a length of the panel including two opposed side edges and an intermediate panel wall portion and which are arranged to be connected edge to edge to form a second side wall with a height of the second side wall defined by the length of the panels and a width of each panel defining a part of a width of the first second wall;
a plurality of oonnecting wall panels which are extruded longitudinally to define a constant cross section along a length of the panel including two opposed side edges and an intermediate panel wall- portlon and which are arraraged to span between the first and second side walls at spaced positions across the width of the side walls to hold the first and second walls apart and define a hollow interior therebetween including a plurality of cells farmed between each connecting wall panel and the next; , each connecting wall panel having a plurality of holes for communication of concrete and reinforcing bars between each cell and the next;
each connectfng wall panel having a first pair of connector element at one edge for attachment to respactive ones of the first wall panels and a second pair of connector element at an opposed edge for attachment to respective ones of the second wall paneis;
the first side wall panels being arranged to support without bowing cast concrete poured into the interior within each cell;
the flrst side wall panels being supported against bowing by a wall portion between the connecting wall panels and extending generally parallel thereto and thus at right angles to the first side wall panel.
Preferably the connecting walls each InGude a pair of projecting tongues extending therefrom generally at right angles therato at a position adjacent to and spaced from the second wall panels for locating between the tongues and the second wall panels pieces of rigid foam insulation.
Preferably the second wail paneis indude a plurality of iongitudinally extending ribs,.each rib including a pair of sides and a pan el portion.
Preferably the connector elements on the connector walls comprise T
shaped members for engagement into co-operating C-shaped members on an inner surface of the first and second panels.
According to a second aspect of the invention there is provided a set of extruded panels for use in constructing a form-work for concrete comprising:
a plurWity of first side wall panels which are extruded longitudinally to define a constant cross section along a length of the panel inciuding iwo opposed 5 side edges and an intermediate panel wall portion and which are arranged to be connected edge to edge to form a first side wall with a height of the first side wall defined by the length of the panels and a width of each panel defining a part of a width of the first side wail;
a plurality of second slde wall panels which are extruded iongitudinally to define a constant cross section along a length of the panel Including two opposed side edges and an intermediate panel wall portion and which are arranged to be connected edge to edge to form a second side wall with a height of the second side wall defined by the length of the panels and a width of each panel defining a part of a width of the first second wall;
a plurality of connecting wall panels which are extruded longitudinally to der['ine a constant cross section along a length of the panel including two opposed side edges and an intermediate panel wall portion and which are ananged to,span between the first and second side walls at spaced positions across the width of the side walls to hold the first and second walls apart and define a hollow interior therebetween including a plurality of cells formed between each connecting wall panel and the next;
each conneefing wall panel having a piurality of' holes for communicati:on of concrete and reinforcing bars between each cell and the next;
s each connecting wall panel having a first pair of connector element at one edge for attachment to resperbve ones of the first wall panels and a second pair of connector element at an opposed edge for attachment to respective ones of the second wall panels:
the first side wall panels being arranged to support without bowing cast concrete poured into the interior within each cell;
the first side wall paneis including an outer wall facing outwardly of the interior and an Inner wall generally parallel to the outer wall and spaced inwardly therefrom, the outer wall being supported against bowing by a wall portion between the cannecfing wall panels and extending generally parallel thereto and thus at right angles to the first side wall panel, the wall portion being formed integrally with the Inner and outer walls.
Preferably there is provided a plurality of parallel wall portions interconnecting the inner and outer walls.
Preferably the Inner wall is closed to prevent entry of concrete between the inner and outer walls.
AcxoFding to a third aspect of the Invention there is provided a set of extruded panels for use in constructing a fiorm-work for concrete comprising:
a plurality of first side wall panels which are extruded longitudinally to define a constant cross section along a length of the panel incauding two opposed side edges and an intermediate panel wall portion and which are arrariged to be connected edge to edge to form a first side wall with a height of the first side wall defined by the length of the panels and a width of each panel defining a part of a width of the first side wall;
a plurality of second side wall panels which are. extruded longitudinally to define a constant cxoss section along a iength of the panel including two opposed side edges and an intermediate panel wall portion and which are arranged to be connected edge to edge to form a second side wall with a height of the second side wall defined by the length of the panels and a width of each panel defining a part of a width of the first second wall;
a plurality of connecting wall panels which are extruded longitudinaity to define a constant cross section along a length of the panel including two opposed side edges and an intermediate panel wall portion and which are arranged to span between the first and second side waHs at spaced positions across the width of the side walls to hold the first and second walls apart and define a hollow intertor therebetween including a plurality of cells formed between each connecting wall panel and the next;
each connecting wa11 panel having a* plurality of holes for eommunication of concrete and reinforcing bars between each cell and the next;
each eonnecft wall panel having a first pair of connector element at one edge for attachment to respective ones of the first wall panels and a second pair of eonnector element at an opposed edge for attachment to respective ones of the second wall panels;
the first side wall panels being arranged to support without bowing cast concrete poured into the intenor within each cell;
S
each first side wall panel being associated with a respective one of a plurality of inner walls generally parallel to the side wall panel and spaced inwardly therefrom, the first side wali panel being supported against bowing by a wall portion located between the connecdng wall panels and extending generally parallel thereto = 5 and thus at right angles to the first side wall panel. the wall portion being connected between the first side panel and the inner wall so as to communicate forces therebetween.
Preferably the Inner wall and the wall porlion have holes for penetration of concaeta.
Preferably the inner wall and the first wall panel each have a female connector thereon for receiving a male connector at the end of the wall portion.
Preferably the female connector comprises a pair of C-shaped receptacles facing each other and the male connectors comprise a pair of T-shaped members back to back.
Preferably the connector elements on the oonnector walls comp[rse T-shaped members for engagement into co-operating C-shaped members on an inner surface of the first and second panels.
Preferab[ythe innerwali and the first wall panel are identical_ Acaording to a fourth aspect of the invention there is provided a set of extruded panefs for use in constructing a furm-work for concrete comprising:
a plurality of first side wall panels which are extruded longitudinally ta define a constant cross section along a length of the panel incJuding two opposed side edges and an intermediate pane! wall pol#ion and which are arranged to be connected edge to edge to form a first side wall with a height of the first stde wall defined by the length of the panels and a width of each panel defining a part of a width of the first side wall:
a pluraGty of second side wail panels which are extn,ded longitudinally to define a constant cross section along a length of the panel including two opposed side edges and an intermQdiate panel wall portion and which are arranged to be connected edge to edge to form a second side wall with a height of the =second side wall defined by the length of the panels and a width of each panel defining a part of a width of the first second wall;
a plurality of connecting wall paneis which are extruded longitudinally to define a constant cross section along a length of the panel including two opposed side edges and an intermediate panel wall poriian and which are arranged to span between the first and second side walls at spaced positions across the width of the side walls to hold the first and second walls apart and define a hollow interior therebetween including a plurality of celts 'formed between each connecting wall panel and the next;
each connecting wall panel having a plurality of holes for communication of concrete and reinforcing bars between each cell and the next;
each connecting wall panel having a first pair of connector element at one edge for attachment to respective ones of the first wall panels and a second pair of connector element at an opposed edge for attachment to respective ones of the.
second wal! panels;
the first side wall panels being arranged to support without bowing cast concrete poured Into the Interior within each cell;
each of the fcrst side wall panels being supported against -bowing by a wall portion located between the connecking wall panels and extending generally 5 parallel themto and thus at right angles to the first side wall panel. the wall portion being connected at one end to the first side wall panel and at its other end to the second side wall panel.
Preferably the wall por6on and the connecting walls are Identical.
Preferably the connector elements on the connector walls comprise T-10 shaped members for engagement into co-operating C-shaped members on an inner surface of the first and second panels and wheMn the wall portion Includes T
shaped members identical to those of the connector walls and wherein the first and second wall panels include two C-shaped receptacles facing each other at a mid, point on an inside surface thereof for receiving the T-shaped members of the wall portion.
BRIEF DFSCR,IPTIQN OF THE DROWlNCCg Three altemative embodiments of the invention will now be descnbed in conjunction with the accompanying drawings in which:
Figure 1 is an isametric view showing In general a fornt-work for casting of concrete.
Figure 2 is a horizontal cross sectional view of a first embodiment of the panels acconiing to the present invention to provide a form-work of -the general construction shown in Figure 1.
Figura 3 is a horizontal cross seotional viev-+ of a second ;embodiment af the panels according to the present invention to provide a form4ork of the general construction shown in Figure 1.
Figure 4 is a horizontal cross sectional view of a third embodiment of the panels aooording to the present inventfon to provide a form work ot the genera!
construction shown in Figure 1.
b~TA! .ED DESCRIPTIDN
In Figure 1 is shown a forrnwork of the general type shown In the above Canadian patent of Rodighiero. Thus the construction includes a plural"ity of 1.0 inside wall panels 10 which stand vertically upwardly and are connected at side edges 11 and 12 to fomn an inside wall structure 13. A similar outside wall structure 14 includes outside wall panels 15 and 1e connected together at edges 17 and 18.
The inside wall structure 13 and the outside wall structure 14 are interconnected by connecting wall panels 19 which bridge the space between the inside and outside wall and also act to connect together the panels at their edges 11.
12 and 17,18. The connecting wall panels 19 include holes 20 which allbw concrete poured into the individual cells defined between the connecting members to.
pass between the oells and thus form an integral concrete structure throughout the formwork defined between the side walls. prior to pouring the concrete, suitable reinforcing bars 21 can be inserted through the aligned holes in the;
connecting members 20.
All of the panels are formed by extrusion so that they hav a constant cross section and details of the panels are shown and described in Figures 2.
3 and 4 as set out hereinafter.
The connecting walls 19 have a pair of right angles tongue;s 22 and 23 projecting outwardly from the sides thereof parallel to the side wall 14 and closer to the side wall 14. The tongues thus define a channel for receiving a portion 24 of rigid foamed insulation material which is cut to the required shape a-nd inserted into the cell adjacent the side wall 14 and outside the tongues 22 and 23. The ooncrete is thus restricted to the area between the foam"insulation materia124 and the inside wall 13.
The connector walls 19 include at each edge a pair of male connectors 25 for insertion into female receptacles 26 at the edges 11 and 12 of the panels 10 and at the edges 17 and 18 of the panels 15.
In between the edges, it is necessary to provide support for the panels 10 to prevent their bowing inwardly into the building under the weight of the concrete prior to its curing. Thus the panels are supported by support walls 30 shown schematically in Figure 1 and shown in further detail and in different altematives in Figures 2, 3 and 4.
Tuming firstly to Figure 2, it will be noted that the male connectors 5 on the interconnecting walls 19 are generally T-shaped with a leg of the T
oonnected to the connecting wall 19 at its edge and the top of the T generally pa~ailel to the connecting wail.
13 ~
It will be further noted that the female receptacies 26 are generally C-shaped so as to wrap around the top 'of the T-shaped connector 25. 'Thus the C-shape includes a base 26A parallel to the lop of the T bar and two legs which wrap around the T bar and extend toward the leg of the T bar. Thus the ends of the legs on the inside surface of the T bar lies adjacent or in contact with the respective side surface of the connecting wall 19. The other leg of the C-shape as indicated at 268 is provided on the exposed surface of the side wall panel 10 and forms. a portion or edge 26C which abuts with the corresponding edge of the next adjacent panel so that the connecting wall pane! 19 is not itself visible from the outside of the structure.
Thus the interconnections between the panels are in the fonr of a single vertical line providing an attractive appearance.
The interconnection with the outer wall 14 is identical and is again formed by the T-shaped male members on the connecting wall 19 and a female C
shaped receptacles on the outer wall panels 15, 16, The. right angles tongs 22 and 23 are visible in Figure 2 spaced from the outer wall 14 by a distance D which ks substantially equal to the thickness of the foam insert of insulation n,aterial.
An additional T shaped male member 31 is provide don the connecting wall at a position adjacent to the inner wall 10. This is not used in the constniction of Figure 2 but Is provided as an attemative mounting arrangement to allow flexibility in the construction to accommodate different structural arrangements and particularly the arrangement showri in Figure 3 which may be adopted in some circuinstances.
- , i The outer wall panels 15 are shaped so as to define a generally flat plane 32 forming a flat wall structure. However in order to provide an attractive appearance and in order to acoommodate expansion and contraction which will occur due to significant temperature changes at the outside surface, ttie outer wall panels 15 include rib.s 33 and 34 each of which is defined by an inciiried side wall 35, an outer panel portion 36 parallel to the plane 32 and a second indined side wall 35. This arrangement allows the expansion which will occur to be taken up In slight changes In angle In the inclined walls 35. A projecting flange 37 is provided on the inside of the rib. From the aesthetics point af view, therefore, the ribs break up the appearance of the flat surface so that any imperfections in what would otherwise be a totally flat surface are not immediately apparent to the eye. Slight changes in angle or surface shape are therefore not visible due to the presence of,the ribs and the changes of shading which occur due to light pattems fanned by those ribs.
However the centre section between the ribs Iies in a common plane 32 and therefore the side wall is basically flat.
In the embodiment of Figure 2, the inside wall 10 supports the concrete within the ceg and Is prevented from bowing by the constnaction generally indicated at 30. In the embodiment of Figure 2 the arrangement which prevents the bowing is deflhed by an additionai inside wall 40 and three transverse support wails 41, 42 and 43. The inside wall 40 is equal In width to the panel and forms a contiguous extension of the Inside leg of the C-shaped receptacle 26.
The outer wall 10A of the panel is integrally extruded !with the C-shaped receptades 26, with the inner wall 40 and with the transverse connecting walls 41, 42 and 43 to form an integral closed structure defining four hoilow interior cells,between the transverse walls. The Inner wall 40 is fully closed so tEiat concrete is prevented from entering into the hollow interior cells. The width of the wall 42 is slightly greater than that of the walls 41 and 43 and also slightly greater than the 5 cross bar 26A of the Gshape receptacle 26 so that the wall 40 is slightly V-shaped reaching an apex at the wall 42.
The double wall integral stnicture thus formed as a simple single extrusion of the embodiment of Figure 2 thus supports the concrete *and prevents bowing of the inside wall panel 10. The hollow eells can also provide a space for 10 receiving util'ifies such as wiring and the Iike.
Tuming now to Figure 3, there is shown an altemative constn,ction which uses the same connector walls 19 and the same outer wall panel's 15 as that of Figure 2.
In this embodlment the inner wall panel 10 includes the same C-15 shaped receptades 26 but is fomved only from a single sheet of plastics material as Indicated at 50: In this embodiment the single wall 50 inctudes two female receptacies 51 and 52 on the Inside surface of the panel 50 with the C-shaped' receptacles facing each other and spaced so as to receive the T-shaped male members 53 of a supporfing wall portion 54. Thus the C-shaped receptacies 51 and 52 include as one side of the C-shape the panel 50 itself and extend from the panel at right angles to the panel a leg which wraps around the T bar top of 'the T-shape members 53.
, 16 The wall portion 54 thus is supported by the female receptat:les 51 and 52 and projects generally at right angles to the wall 50 to an opposed end 55 spaced from the panel 50.
An additional wall panel 68 which is identical in cross sectiun to the Inner wall panel 10 is attached to the end 55 and to the T-shaped members 31 on the connector walls 19. The additional wall 56 is thus parallel to the wall 50 and spaced therefrom across the hallow interior of the cell. Both the support wall 54 and the additional wall 56 have holes which allow the concrete to pass through those holes from the interior of the cell to enter and fill the rectangular areas between the walls 50 and 56. Thus the whole of ths stnicti,re is filled with concxete up to the wall 50 and the additional wall 56 and the support wall 54 are present merely to provide support for the wa1150 during instailation.
Tuming now to Fgure 4, there Is shown a further : altemative arrangement which uses the same inside watl panel 50 and connecting walls 19 as that shown in Figure 3. Thus the inside wall panel 50 is connected using the receptacles 26 to the male connectors at the edge of the connecting wall 19.
In this embodiment, the support 30 is provided by an additionai support wall 60 which is identicai in crass sec#lon to the connecting walls 19 and extends thus across the full width of the ceil from the side wall 50 to the outside wall panel 15A. Thus the outside panel 15A is modified relative to that of tlae previous embodiment by the addition of "haped receptacles 51 A and 52A ! identical in evnstructPon to the receptacles 51 and 52 on the panel 50. Thus the T-shaped male connectQrs on the edge of the support wall are engaged Into the receptade defined by the receptade portions 51A and 52A and at the same time the mala connectors on the other edge of the wall 60 are engaged into the receptacles 51 arid 52.
Thus the support wall bridges the whole width of the cell and comrrwnicates bowing forces on the panel across the width of the structure to the outer wall panel 15A:
In this embodiment, the construction is simplified by the fact that the support wall 60 is identical in cross section to the connecting walls 19 thus reducing manufacturing cost and inventory problems.
The arrangements described above therefore provide an efFectiva support for the inside wall panel to prevent its bowing while allowing use of simple forms and reducing manufacturing costs by use of the same cross sectional elements at difFerent locations in the structure.
Since various modifications can be made in my Invention as herein above described. and many apparently widely different embodiments of same made within the spirit and scope of the claims without deparHng from such spirit and scope, it is intended that all matter contained in the accompanying specification shall be interpreted as illustrative only and not in a limiting sense.
It is one object of the present invention, therefore, to provide an improved set of extnided form-work panels for use in defining a form work for casting of concrete structures.
According to one aspect of the invention there is provided a set of extruded panels for use in constructing a form-work for concrete comprising_ a pluralfty of first side wall panels which are extruded longitudinally to define a constant cross section along a length of the panel including two opposed side edges and an intermediate panel wall portion and which are arranged to be connected edge to edge to form a first side wall with a height of the first side wall defined by the length of the panels and a width of each panel defining a part of a width of the first side wall;
a plurality of second side wall panels which are extruded longitudinally to define a constant cross section along a length of the panel including two opposed side edges and an intermediate panel wall portion and which are arranged to be connected edge to edge to form a second side wall with a height of the second side wall defined by the length of the panels and a width of each panel defining a part of a width of the first second wall;
a plurality of oonnecting wall panels which are extruded longitudinally to define a constant cross section along a length of the panel including two opposed side edges and an intermediate panel wall- portlon and which are arraraged to span between the first and second side walls at spaced positions across the width of the side walls to hold the first and second walls apart and define a hollow interior therebetween including a plurality of cells farmed between each connecting wall panel and the next; , each connecting wall panel having a plurality of holes for communication of concrete and reinforcing bars between each cell and the next;
each connectfng wall panel having a first pair of connector element at one edge for attachment to respactive ones of the first wall panels and a second pair of connector element at an opposed edge for attachment to respective ones of the second wall paneis;
the first side wall panels being arranged to support without bowing cast concrete poured into the interior within each cell;
the flrst side wall panels being supported against bowing by a wall portion between the connecting wall panels and extending generally parallel thereto and thus at right angles to the first side wall panel.
Preferably the connecting walls each InGude a pair of projecting tongues extending therefrom generally at right angles therato at a position adjacent to and spaced from the second wall panels for locating between the tongues and the second wall panels pieces of rigid foam insulation.
Preferably the second wail paneis indude a plurality of iongitudinally extending ribs,.each rib including a pair of sides and a pan el portion.
Preferably the connector elements on the connector walls comprise T
shaped members for engagement into co-operating C-shaped members on an inner surface of the first and second panels.
According to a second aspect of the invention there is provided a set of extruded panels for use in constructing a form-work for concrete comprising:
a plurWity of first side wall panels which are extruded longitudinally to define a constant cross section along a length of the panel inciuding iwo opposed 5 side edges and an intermediate panel wall portion and which are arranged to be connected edge to edge to form a first side wall with a height of the first side wall defined by the length of the panels and a width of each panel defining a part of a width of the first side wail;
a plurality of second slde wall panels which are extruded iongitudinally to define a constant cross section along a length of the panel Including two opposed side edges and an intermediate panel wall portion and which are arranged to be connected edge to edge to form a second side wall with a height of the second side wall defined by the length of the panels and a width of each panel defining a part of a width of the first second wall;
a plurality of connecting wall panels which are extruded longitudinally to der['ine a constant cross section along a length of the panel including two opposed side edges and an intermediate panel wall portion and which are ananged to,span between the first and second side walls at spaced positions across the width of the side walls to hold the first and second walls apart and define a hollow interior therebetween including a plurality of cells formed between each connecting wall panel and the next;
each conneefing wall panel having a piurality of' holes for communicati:on of concrete and reinforcing bars between each cell and the next;
s each connecting wall panel having a first pair of connector element at one edge for attachment to resperbve ones of the first wall panels and a second pair of connector element at an opposed edge for attachment to respective ones of the second wall panels:
the first side wall panels being arranged to support without bowing cast concrete poured into the interior within each cell;
the first side wall paneis including an outer wall facing outwardly of the interior and an Inner wall generally parallel to the outer wall and spaced inwardly therefrom, the outer wall being supported against bowing by a wall portion between the cannecfing wall panels and extending generally parallel thereto and thus at right angles to the first side wall panel, the wall portion being formed integrally with the Inner and outer walls.
Preferably there is provided a plurality of parallel wall portions interconnecting the inner and outer walls.
Preferably the Inner wall is closed to prevent entry of concrete between the inner and outer walls.
AcxoFding to a third aspect of the Invention there is provided a set of extruded panels for use in constructing a fiorm-work for concrete comprising:
a plurality of first side wall panels which are extruded longitudinally to define a constant cross section along a length of the panel incauding two opposed side edges and an intermediate panel wall portion and which are arrariged to be connected edge to edge to form a first side wall with a height of the first side wall defined by the length of the panels and a width of each panel defining a part of a width of the first side wall;
a plurality of second side wall panels which are. extruded longitudinally to define a constant cxoss section along a iength of the panel including two opposed side edges and an intermediate panel wall portion and which are arranged to be connected edge to edge to form a second side wall with a height of the second side wall defined by the length of the panels and a width of each panel defining a part of a width of the first second wall;
a plurality of connecting wall panels which are extruded longitudinaity to define a constant cross section along a length of the panel including two opposed side edges and an intermediate panel wall portion and which are arranged to span between the first and second side waHs at spaced positions across the width of the side walls to hold the first and second walls apart and define a hollow intertor therebetween including a plurality of cells formed between each connecting wall panel and the next;
each connecting wa11 panel having a* plurality of holes for eommunication of concrete and reinforcing bars between each cell and the next;
each eonnecft wall panel having a first pair of connector element at one edge for attachment to respective ones of the first wall panels and a second pair of eonnector element at an opposed edge for attachment to respective ones of the second wall panels;
the first side wall panels being arranged to support without bowing cast concrete poured into the intenor within each cell;
S
each first side wall panel being associated with a respective one of a plurality of inner walls generally parallel to the side wall panel and spaced inwardly therefrom, the first side wali panel being supported against bowing by a wall portion located between the connecdng wall panels and extending generally parallel thereto = 5 and thus at right angles to the first side wall panel. the wall portion being connected between the first side panel and the inner wall so as to communicate forces therebetween.
Preferably the Inner wall and the wall porlion have holes for penetration of concaeta.
Preferably the inner wall and the first wall panel each have a female connector thereon for receiving a male connector at the end of the wall portion.
Preferably the female connector comprises a pair of C-shaped receptacles facing each other and the male connectors comprise a pair of T-shaped members back to back.
Preferably the connector elements on the oonnector walls comp[rse T-shaped members for engagement into co-operating C-shaped members on an inner surface of the first and second panels.
Preferab[ythe innerwali and the first wall panel are identical_ Acaording to a fourth aspect of the invention there is provided a set of extruded panefs for use in constructing a furm-work for concrete comprising:
a plurality of first side wall panels which are extruded longitudinally ta define a constant cross section along a length of the panel incJuding two opposed side edges and an intermediate pane! wall pol#ion and which are arranged to be connected edge to edge to form a first side wall with a height of the first stde wall defined by the length of the panels and a width of each panel defining a part of a width of the first side wall:
a pluraGty of second side wail panels which are extn,ded longitudinally to define a constant cross section along a length of the panel including two opposed side edges and an intermQdiate panel wall portion and which are arranged to be connected edge to edge to form a second side wall with a height of the =second side wall defined by the length of the panels and a width of each panel defining a part of a width of the first second wall;
a plurality of connecting wall paneis which are extruded longitudinally to define a constant cross section along a length of the panel including two opposed side edges and an intermediate panel wall poriian and which are arranged to span between the first and second side walls at spaced positions across the width of the side walls to hold the first and second walls apart and define a hollow interior therebetween including a plurality of celts 'formed between each connecting wall panel and the next;
each connecting wall panel having a plurality of holes for communication of concrete and reinforcing bars between each cell and the next;
each connecting wall panel having a first pair of connector element at one edge for attachment to respective ones of the first wall panels and a second pair of connector element at an opposed edge for attachment to respective ones of the.
second wal! panels;
the first side wall panels being arranged to support without bowing cast concrete poured Into the Interior within each cell;
each of the fcrst side wall panels being supported against -bowing by a wall portion located between the connecking wall panels and extending generally 5 parallel themto and thus at right angles to the first side wall panel. the wall portion being connected at one end to the first side wall panel and at its other end to the second side wall panel.
Preferably the wall por6on and the connecting walls are Identical.
Preferably the connector elements on the connector walls comprise T-10 shaped members for engagement into co-operating C-shaped members on an inner surface of the first and second panels and wheMn the wall portion Includes T
shaped members identical to those of the connector walls and wherein the first and second wall panels include two C-shaped receptacles facing each other at a mid, point on an inside surface thereof for receiving the T-shaped members of the wall portion.
BRIEF DFSCR,IPTIQN OF THE DROWlNCCg Three altemative embodiments of the invention will now be descnbed in conjunction with the accompanying drawings in which:
Figure 1 is an isametric view showing In general a fornt-work for casting of concrete.
Figure 2 is a horizontal cross sectional view of a first embodiment of the panels acconiing to the present invention to provide a form-work of -the general construction shown in Figure 1.
Figura 3 is a horizontal cross seotional viev-+ of a second ;embodiment af the panels according to the present invention to provide a form4ork of the general construction shown in Figure 1.
Figure 4 is a horizontal cross sectional view of a third embodiment of the panels aooording to the present inventfon to provide a form work ot the genera!
construction shown in Figure 1.
b~TA! .ED DESCRIPTIDN
In Figure 1 is shown a forrnwork of the general type shown In the above Canadian patent of Rodighiero. Thus the construction includes a plural"ity of 1.0 inside wall panels 10 which stand vertically upwardly and are connected at side edges 11 and 12 to fomn an inside wall structure 13. A similar outside wall structure 14 includes outside wall panels 15 and 1e connected together at edges 17 and 18.
The inside wall structure 13 and the outside wall structure 14 are interconnected by connecting wall panels 19 which bridge the space between the inside and outside wall and also act to connect together the panels at their edges 11.
12 and 17,18. The connecting wall panels 19 include holes 20 which allbw concrete poured into the individual cells defined between the connecting members to.
pass between the oells and thus form an integral concrete structure throughout the formwork defined between the side walls. prior to pouring the concrete, suitable reinforcing bars 21 can be inserted through the aligned holes in the;
connecting members 20.
All of the panels are formed by extrusion so that they hav a constant cross section and details of the panels are shown and described in Figures 2.
3 and 4 as set out hereinafter.
The connecting walls 19 have a pair of right angles tongue;s 22 and 23 projecting outwardly from the sides thereof parallel to the side wall 14 and closer to the side wall 14. The tongues thus define a channel for receiving a portion 24 of rigid foamed insulation material which is cut to the required shape a-nd inserted into the cell adjacent the side wall 14 and outside the tongues 22 and 23. The ooncrete is thus restricted to the area between the foam"insulation materia124 and the inside wall 13.
The connector walls 19 include at each edge a pair of male connectors 25 for insertion into female receptacles 26 at the edges 11 and 12 of the panels 10 and at the edges 17 and 18 of the panels 15.
In between the edges, it is necessary to provide support for the panels 10 to prevent their bowing inwardly into the building under the weight of the concrete prior to its curing. Thus the panels are supported by support walls 30 shown schematically in Figure 1 and shown in further detail and in different altematives in Figures 2, 3 and 4.
Tuming firstly to Figure 2, it will be noted that the male connectors 5 on the interconnecting walls 19 are generally T-shaped with a leg of the T
oonnected to the connecting wall 19 at its edge and the top of the T generally pa~ailel to the connecting wail.
13 ~
It will be further noted that the female receptacies 26 are generally C-shaped so as to wrap around the top 'of the T-shaped connector 25. 'Thus the C-shape includes a base 26A parallel to the lop of the T bar and two legs which wrap around the T bar and extend toward the leg of the T bar. Thus the ends of the legs on the inside surface of the T bar lies adjacent or in contact with the respective side surface of the connecting wall 19. The other leg of the C-shape as indicated at 268 is provided on the exposed surface of the side wall panel 10 and forms. a portion or edge 26C which abuts with the corresponding edge of the next adjacent panel so that the connecting wall pane! 19 is not itself visible from the outside of the structure.
Thus the interconnections between the panels are in the fonr of a single vertical line providing an attractive appearance.
The interconnection with the outer wall 14 is identical and is again formed by the T-shaped male members on the connecting wall 19 and a female C
shaped receptacles on the outer wall panels 15, 16, The. right angles tongs 22 and 23 are visible in Figure 2 spaced from the outer wall 14 by a distance D which ks substantially equal to the thickness of the foam insert of insulation n,aterial.
An additional T shaped male member 31 is provide don the connecting wall at a position adjacent to the inner wall 10. This is not used in the constniction of Figure 2 but Is provided as an attemative mounting arrangement to allow flexibility in the construction to accommodate different structural arrangements and particularly the arrangement showri in Figure 3 which may be adopted in some circuinstances.
- , i The outer wall panels 15 are shaped so as to define a generally flat plane 32 forming a flat wall structure. However in order to provide an attractive appearance and in order to acoommodate expansion and contraction which will occur due to significant temperature changes at the outside surface, ttie outer wall panels 15 include rib.s 33 and 34 each of which is defined by an inciiried side wall 35, an outer panel portion 36 parallel to the plane 32 and a second indined side wall 35. This arrangement allows the expansion which will occur to be taken up In slight changes In angle In the inclined walls 35. A projecting flange 37 is provided on the inside of the rib. From the aesthetics point af view, therefore, the ribs break up the appearance of the flat surface so that any imperfections in what would otherwise be a totally flat surface are not immediately apparent to the eye. Slight changes in angle or surface shape are therefore not visible due to the presence of,the ribs and the changes of shading which occur due to light pattems fanned by those ribs.
However the centre section between the ribs Iies in a common plane 32 and therefore the side wall is basically flat.
In the embodiment of Figure 2, the inside wall 10 supports the concrete within the ceg and Is prevented from bowing by the constnaction generally indicated at 30. In the embodiment of Figure 2 the arrangement which prevents the bowing is deflhed by an additionai inside wall 40 and three transverse support wails 41, 42 and 43. The inside wall 40 is equal In width to the panel and forms a contiguous extension of the Inside leg of the C-shaped receptacle 26.
The outer wall 10A of the panel is integrally extruded !with the C-shaped receptades 26, with the inner wall 40 and with the transverse connecting walls 41, 42 and 43 to form an integral closed structure defining four hoilow interior cells,between the transverse walls. The Inner wall 40 is fully closed so tEiat concrete is prevented from entering into the hollow interior cells. The width of the wall 42 is slightly greater than that of the walls 41 and 43 and also slightly greater than the 5 cross bar 26A of the Gshape receptacle 26 so that the wall 40 is slightly V-shaped reaching an apex at the wall 42.
The double wall integral stnicture thus formed as a simple single extrusion of the embodiment of Figure 2 thus supports the concrete *and prevents bowing of the inside wall panel 10. The hollow eells can also provide a space for 10 receiving util'ifies such as wiring and the Iike.
Tuming now to Figure 3, there is shown an altemative constn,ction which uses the same connector walls 19 and the same outer wall panel's 15 as that of Figure 2.
In this embodlment the inner wall panel 10 includes the same C-15 shaped receptades 26 but is fomved only from a single sheet of plastics material as Indicated at 50: In this embodiment the single wall 50 inctudes two female receptacies 51 and 52 on the Inside surface of the panel 50 with the C-shaped' receptacles facing each other and spaced so as to receive the T-shaped male members 53 of a supporfing wall portion 54. Thus the C-shaped receptacies 51 and 52 include as one side of the C-shape the panel 50 itself and extend from the panel at right angles to the panel a leg which wraps around the T bar top of 'the T-shape members 53.
, 16 The wall portion 54 thus is supported by the female receptat:les 51 and 52 and projects generally at right angles to the wall 50 to an opposed end 55 spaced from the panel 50.
An additional wall panel 68 which is identical in cross sectiun to the Inner wall panel 10 is attached to the end 55 and to the T-shaped members 31 on the connector walls 19. The additional wall 56 is thus parallel to the wall 50 and spaced therefrom across the hallow interior of the cell. Both the support wall 54 and the additional wall 56 have holes which allow the concrete to pass through those holes from the interior of the cell to enter and fill the rectangular areas between the walls 50 and 56. Thus the whole of ths stnicti,re is filled with concxete up to the wall 50 and the additional wall 56 and the support wall 54 are present merely to provide support for the wa1150 during instailation.
Tuming now to Fgure 4, there Is shown a further : altemative arrangement which uses the same inside watl panel 50 and connecting walls 19 as that shown in Figure 3. Thus the inside wall panel 50 is connected using the receptacles 26 to the male connectors at the edge of the connecting wall 19.
In this embodiment, the support 30 is provided by an additionai support wall 60 which is identicai in crass sec#lon to the connecting walls 19 and extends thus across the full width of the ceil from the side wall 50 to the outside wall panel 15A. Thus the outside panel 15A is modified relative to that of tlae previous embodiment by the addition of "haped receptacles 51 A and 52A ! identical in evnstructPon to the receptacles 51 and 52 on the panel 50. Thus the T-shaped male connectQrs on the edge of the support wall are engaged Into the receptade defined by the receptade portions 51A and 52A and at the same time the mala connectors on the other edge of the wall 60 are engaged into the receptacles 51 arid 52.
Thus the support wall bridges the whole width of the cell and comrrwnicates bowing forces on the panel across the width of the structure to the outer wall panel 15A:
In this embodiment, the construction is simplified by the fact that the support wall 60 is identical in cross section to the connecting walls 19 thus reducing manufacturing cost and inventory problems.
The arrangements described above therefore provide an efFectiva support for the inside wall panel to prevent its bowing while allowing use of simple forms and reducing manufacturing costs by use of the same cross sectional elements at difFerent locations in the structure.
Since various modifications can be made in my Invention as herein above described. and many apparently widely different embodiments of same made within the spirit and scope of the claims without deparHng from such spirit and scope, it is intended that all matter contained in the accompanying specification shall be interpreted as illustrative only and not in a limiting sense.
Claims (36)
1. A set of panels for use in constructing a form-work for concrete, comprising:
a plurality of first, second and connecting wall panels extruded longitudinally to define a constant cross section along a length of each panel, the panels each having opposed first and second longitudinal edges;
the first wall panels arranged to be connected edge to edge to form a first wall;
the second wall panels arranged to be connected edge to edge to form a second wall generally parallel to the first wall;
the connecting wall panels arranged to span transversely between the first and second walls with a first edge of each connecting wall panel having a first connector for connection to adjacent edges of an adjacent pair of first wall panels and with a second edge of each connecting wall panel having a second connector for connection to adjacent edges of an adjacent pair of second wall panels, the connecting wall panels holding the first and second walls apart and defining a cell between each adjacent pair of connecting wall panels;
each connecting wall panel having at least one hole for communication of concrete between adjacent cells; and each first wall panel comprising: an outer wall that extends between the first and second edges of the first wall panel; and an inner wall that extends between the first and second edges of the first wall panel, the inner wall spaced transversely from the outer wall and located relatively more proximate to the second wall panel, wherein one of the inner and outer walls has a generally convex cross section along a length of the first wall panel which projects transversely away from the other one of the inner and outer walls.
a plurality of first, second and connecting wall panels extruded longitudinally to define a constant cross section along a length of each panel, the panels each having opposed first and second longitudinal edges;
the first wall panels arranged to be connected edge to edge to form a first wall;
the second wall panels arranged to be connected edge to edge to form a second wall generally parallel to the first wall;
the connecting wall panels arranged to span transversely between the first and second walls with a first edge of each connecting wall panel having a first connector for connection to adjacent edges of an adjacent pair of first wall panels and with a second edge of each connecting wall panel having a second connector for connection to adjacent edges of an adjacent pair of second wall panels, the connecting wall panels holding the first and second walls apart and defining a cell between each adjacent pair of connecting wall panels;
each connecting wall panel having at least one hole for communication of concrete between adjacent cells; and each first wall panel comprising: an outer wall that extends between the first and second edges of the first wall panel; and an inner wall that extends between the first and second edges of the first wall panel, the inner wall spaced transversely from the outer wall and located relatively more proximate to the second wall panel, wherein one of the inner and outer walls has a generally convex cross section along a length of the first wall panel which projects transversely away from the other one of the inner and outer walls.
2. A set of panels according to claim 1 wherein each first wall panel comprises a plurality of support walls extending transversely between the outer and inner walls.
3. A set of panels according to any one of claims 1 to 2 wherein, for each first wall panel, the outer wall, inner wall and support walls are integrally formed.
4. A set of panels according to any one of claims 1 to 3 wherein, for each first wall panel, the inner wall is contiguous for preventing entry of concrete between the inner and outer walls.
5. A set of panels according to any one of claims 1 to 4 wherein, for each first wall panel, the outer wall is substantially planar and the inner wall has a generally V-shaped cross section along a length of the first wall panel with an apex projecting transversely away from the outer wall.
6. A set of panels according to claim 1 wherein each first wall panel comprises a plurality of support walls extending transversely between the outer and inner walls and wherein, for each first wall panel:
the outer wall is substantially planar and the inner wall has a generally V-shaped cross section along a length of the first wall panel with an apex projecting transversely away from the outer wall; and the plurality of support walls comprises a primary support wall extending between the outer wall and the apex of the inner wall, and at least one secondary support wall on either side of the primary support wall and spaced apart therefrom.
the outer wall is substantially planar and the inner wall has a generally V-shaped cross section along a length of the first wall panel with an apex projecting transversely away from the outer wall; and the plurality of support walls comprises a primary support wall extending between the outer wall and the apex of the inner wall, and at least one secondary support wall on either side of the primary support wall and spaced apart therefrom.
7. A set of panels according to claim 2 wherein, for each first wall panel, the plurality of support walls comprises a primary support wall located at an apex of the generally convex cross section and at least one secondary support wall on either side of the primary support wall and spaced apart therefrom.
8. A set of panels according to claim 7 wherein, for each first wall panel, a transverse dimension of the primary support wall is greater than transverse dimensions of the secondary support walls.
9. A set of panels according to any one of claims 1 to 8 wherein each connecting wall panel has a pair of projecting tongues extending therefrom in opposite directions generally perpendicular to the connecting wall, at a position spaced from the second edge of the connecting wall panel for locating rigid foam insulation between the tongues and the second wall.
10. A set of panels according to any one of claims 1 to 9 wherein each second wall panel includes one or more longitudinally extending ribs, each rib defined by a pair of outwardly-projecting longitudinally-extending sides connected by a wall panel portion therebetween.
11. A set of panels according to any one of claims 7 to 8 wherein one of:
the first connector of each connecting wall panel; and the adjacent edges of the adjacent pair of first wall panels, comprises a pair of male connectors for insertion into cooperating female receptacles on the other one of:
the first connector of each connecting wall panel; and the adjacent edges of the adjacent pair of first wall panels.
the first connector of each connecting wall panel; and the adjacent edges of the adjacent pair of first wall panels, comprises a pair of male connectors for insertion into cooperating female receptacles on the other one of:
the first connector of each connecting wall panel; and the adjacent edges of the adjacent pair of first wall panels.
12. A set of panels according to claim 11 wherein the female receptacles are on the adjacent edges of the adjacent pair of first wall panels and are integrally formed with the inner and outer walls of each first wall panel.
13. A set of panels according to claim 12 wherein a portion of the female receptacle forms one of the secondary support walls.
14. A set of panels according to any one of claims 1 to 13 wherein one of:
the second connector of each connecting wall panel; and the adjacent edges of the adjacent pair of second wall panels, comprises a pair of male connectors for insertion into cooperating female receptacles on the other one of:
the second connector of each connecting wall panel; and the adjacent edges of the adjacent pair of second wall panels.
the second connector of each connecting wall panel; and the adjacent edges of the adjacent pair of second wall panels, comprises a pair of male connectors for insertion into cooperating female receptacles on the other one of:
the second connector of each connecting wall panel; and the adjacent edges of the adjacent pair of second wall panels.
15. A set of panels according to any one of claims 7 to 8 wherein the first connector of each connecting wall panel comprises a pair of T-shaped members for engagement with cooperating C-shaped members at the adjacent edges of the adjacent pair of first wall panels.
16. A set of panels according to claim 15 wherein the C-shaped members are integrally formed with the inner and outer walls of each first wall panel.
17. A set of panels according to claim 16 wherein a portion of the C-shaped member forms one of the secondary support walls.
18. A set of panels according to any one of claims 1 to 17 wherein the second connector of each connecting wall panel comprises a pair of T-shaped members for engagement with cooperating C-shaped members at adjacent edges of the adjacent pair of second wall panels.
19. A set of panels for use in constructing a form-work for concrete, comprising:
a plurality of first, second and connecting wall panels extruded longitudinally to define a constant cross section along a length of each panel, the panels each having opposed first and second longitudinal edges;
the first wall panels arranged to be connected edge to edge to form a first wall;
the second wall panels arranged to be connected edge to edge to form a second wall generally parallel to the first wall;
the connecting wall panels arranged to span transversely between the first and second walls with a first edge of each connecting wall panel having a first connector for connection to adjacent edges of an adjacent pair of first wall panels and with a second edge of each connecting wall panel having a second connector for connection to adjacent edges of an adjacent pair of second wall panels, the connecting wall panels holding the first and second walls apart and defining a cell between each adjacent pair of connecting wall panels;
each connecting wall panel having at least one hole for communication of concrete between adjacent cells; and each first wall panel comprising: an outer wall; and an inner wall generally parallel to the outer wall, spaced transversely therefrom and located relatively more proximate to the second wall panel, wherein one of the inner and outer walls has a generally convex cross section along a length of the first wall panel which projects transversely away from the other one of the inner and outer walls.
a plurality of first, second and connecting wall panels extruded longitudinally to define a constant cross section along a length of each panel, the panels each having opposed first and second longitudinal edges;
the first wall panels arranged to be connected edge to edge to form a first wall;
the second wall panels arranged to be connected edge to edge to form a second wall generally parallel to the first wall;
the connecting wall panels arranged to span transversely between the first and second walls with a first edge of each connecting wall panel having a first connector for connection to adjacent edges of an adjacent pair of first wall panels and with a second edge of each connecting wall panel having a second connector for connection to adjacent edges of an adjacent pair of second wall panels, the connecting wall panels holding the first and second walls apart and defining a cell between each adjacent pair of connecting wall panels;
each connecting wall panel having at least one hole for communication of concrete between adjacent cells; and each first wall panel comprising: an outer wall; and an inner wall generally parallel to the outer wall, spaced transversely therefrom and located relatively more proximate to the second wall panel, wherein one of the inner and outer walls has a generally convex cross section along a length of the first wall panel which projects transversely away from the other one of the inner and outer walls.
20. A set of panels according to claim 19 wherein each first wall panel comprises a plurality of support walls extending transversely between the outer and inner walls.
21. A set of panels according to claim 20 wherein, for each first wall panel, the outer wall, inner wall and support walls are integrally formed.
22. A set of panels according to any one of claims 19 to 21 wherein, for each first wall panel, the inner wall is contiguous for preventing entry of concrete between the inner and outer walls.
23. A set of panels according to any one of claims 19 to 22 wherein, for each first wall panel, the outer wall is substantially planar and the inner wall has a generally V-shaped cross section along a length of the first wall panel with an apex projecting transversely away from the outer wall.
24. A set of panels according to claim 19 wherein each first wall panel comprises a plurality of support walls extending transversely between the outer and inner walls and wherein, for each first wall panel:
the outer wall is substantially planar and the inner wall has a generally V-shaped cross section along a length of the first wall panel with an apex projecting transversely away from the outer wall; and the plurality of support walls comprises a primary support wall extending between the outer wall and the apex of the inner wall, and at least one secondary support wall on either side of the primary support wall and spaced apart therefrom.
the outer wall is substantially planar and the inner wall has a generally V-shaped cross section along a length of the first wall panel with an apex projecting transversely away from the outer wall; and the plurality of support walls comprises a primary support wall extending between the outer wall and the apex of the inner wall, and at least one secondary support wall on either side of the primary support wall and spaced apart therefrom.
25. A set of panels according to claim 20 wherein, for each first wall panel, the plurality of support walls comprises a primary support wall located at an apex of the generally convex cross section and at least one secondary support wall on either side of the primary support wall and spaced apart therefrom.
26. A set of panels according to claim 25 wherein, for each first wall panel, a transverse dimension of the primary support wall is greater than transverse dimensions of the secondary support walls.
27. A set of panels according to any one of claims 19 to 26 wherein each connecting wall panel has a pair of projecting tongues extending therefrom in opposite directions generally perpendicular to the connecting wall, at a position spaced from the second edge of the connecting wall panel for locating rigid foam insulation between the tongues and the second wall.
28. A set of panels according to any one of claims 19 to 27 wherein each second wall panel includes one or more longitudinally extending ribs, each rib defined by a pair of outwardly-projecting longitudinally-extending sides connected by a wall panel portion therebetween.
29. A set of panels according to any one of claims 25 to 26 wherein one of:
the first connector of each connecting wall panel; and the adjacent edges of the adjacent pair of first wall panels, comprises a pair of male connectors for insertion into cooperating female receptacles on the other one of:
the first connector of each connecting wall panel; and the adjacent edges of the adjacent pair of first wall panels.
the first connector of each connecting wall panel; and the adjacent edges of the adjacent pair of first wall panels, comprises a pair of male connectors for insertion into cooperating female receptacles on the other one of:
the first connector of each connecting wall panel; and the adjacent edges of the adjacent pair of first wall panels.
30. A set of panels according to claim 29 wherein the female receptacles are on the adjacent edges of the adjacent pair of first wall panels and are integrally formed with the inner and outer walls of each first wall panel.
31. A set of panels according to claim 30 wherein a portion of the female receptacle forms one of the secondary support walls.
32. A set of panels according to any one of claims 19 to 31 wherein one of:
the second connector of each connecting wall panel; and the adjacent edges of the adjacent pair of second wall panels, comprises a pair of male connectors for insertion into cooperating female receptacles on the other one of:
the second connector of each connecting wall panel; and the adjacent edges of the adjacent pair of second wall panels.
the second connector of each connecting wall panel; and the adjacent edges of the adjacent pair of second wall panels, comprises a pair of male connectors for insertion into cooperating female receptacles on the other one of:
the second connector of each connecting wall panel; and the adjacent edges of the adjacent pair of second wall panels.
33. A set of panels according to any one of claims 25 to 26 wherein the first connector of each connecting wall panel comprises a pair of T-shaped members for engagement with cooperating C-shaped members at the adjacent edges of the adjacent pair of first wall panels.
34. A set of panels according to claim 33 wherein the C-shaped members are integrally formed with the inner and outer walls of each first wall panel.
35. A set of panels according to claim 34 wherein a portion of the C-shaped member forms one of the secondary support walls.
36. A set of panels according to any one of claims 19 to 35 wherein the second connector of each connecting wall panel comprises a pair of T-shaped members for engagement with cooperating C-shaped members at adjacent edges of the adjacent pair of second wall panels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2594374A CA2594374C (en) | 2000-02-09 | 2000-02-09 | Extruded permanent form-work for concrete |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2594374A CA2594374C (en) | 2000-02-09 | 2000-02-09 | Extruded permanent form-work for concrete |
| CA 2298319 CA2298319C (en) | 2000-02-09 | 2000-02-09 | Extruded permanent form-work for concrete |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2298319 Division CA2298319C (en) | 2000-02-09 | 2000-02-09 | Extruded permanent form-work for concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2594374A1 CA2594374A1 (en) | 2001-08-09 |
| CA2594374C true CA2594374C (en) | 2010-12-21 |
Family
ID=4165286
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2594374A Expired - Lifetime CA2594374C (en) | 2000-02-09 | 2000-02-09 | Extruded permanent form-work for concrete |
| CA 2298319 Expired - Lifetime CA2298319C (en) | 2000-02-09 | 2000-02-09 | Extruded permanent form-work for concrete |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2298319 Expired - Lifetime CA2298319C (en) | 2000-02-09 | 2000-02-09 | Extruded permanent form-work for concrete |
Country Status (1)
| Country | Link |
|---|---|
| CA (2) | CA2594374C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2009307016A1 (en) * | 2008-10-24 | 2010-04-29 | 2158484 Ontario Inc. | Concrete form module and form panel structures |
| US9273479B2 (en) | 2009-01-07 | 2016-03-01 | Cfs Concrete Forming Systems Inc. | Methods and apparatus for restoring, repairing, reinforcing and/or protecting structures using concrete |
| CA2985420A1 (en) | 2017-11-14 | 2019-05-14 | Piccone Holdings Ltd. | Stay-in-place ready-to-stucco formwork system |
-
2000
- 2000-02-09 CA CA2594374A patent/CA2594374C/en not_active Expired - Lifetime
- 2000-02-09 CA CA 2298319 patent/CA2298319C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2298319C (en) | 2007-10-02 |
| CA2298319A1 (en) | 2001-08-09 |
| CA2594374A1 (en) | 2001-08-09 |
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