CA2298319C - Extruded permanent form-work for concrete - Google Patents
Extruded permanent form-work for concrete Download PDFInfo
- Publication number
- CA2298319C CA2298319C CA 2298319 CA2298319A CA2298319C CA 2298319 C CA2298319 C CA 2298319C CA 2298319 CA2298319 CA 2298319 CA 2298319 A CA2298319 A CA 2298319A CA 2298319 C CA2298319 C CA 2298319C
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- panels
- wall
- panel
- wall panels
- side wall
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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 a support wall identical to the connector walls spans between the inside and outside walls to hold the panels against bowing.
Description
EXTRUDED PERMANENT FORM=WORK FOR CONCRETE
This Invention relates to a set of extruded form-work 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.
BACKGROUND OF THE INVENTION
There have been many attempts over the years to generate an alternative form of building construction which utilizes permanent forms into which concrete is poured and cured to provide the structurai strength for the exterior form work. The use of plastic extruded panels for the formwork has previously been proposed and these can be readily assembled on sight to provide a structure 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 cladding and providing in one step a finished attractive appearance.
One example and arrangement of this type is shown in Canadian Patent 957,816 (Rodighiero et al) 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 primarily by transversely extending stiffening ribs. However additional wali portions can be provided connected to the side wali 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 5,218,$83 (Nessa et al) issued June 8, 1993. This discloses a generally cylindrical structure with one open face where the cylindrical elements slide each into the next using maie and female couplings to form a similar permanent form work structure to develop the above patent but in which the structure takes the form of a series of interconnected columns.
Canadian Patents 2,215,939, 2,218,600 and 2,226,497 of Piccone disclose various constructions of fonn work of a similar nature to that shown in the above patent of Rodighiero but many shaped to form the column structure similar to that of Nessa.
It has been determined recently that the most commercial 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 substantially to a minimum so as to reduce the construction cost of the initial formwork. It is of course important also to minimize the labour involved in assembly of the structures on site.
One problem which arises In meeting 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 extruded 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 plurality 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 connecting 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;
each connecting wall panel being arranged to span between the first and second side walls at with a first side edge of the connecting wall panel being connected to the side edges of an adjacent pair of the first side wall panels and with a second side edge of the connecting wall panel being connected to the side edges of an adjacent pair of the second side wall panels 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 connecting wall panel having a plurality of holes for communication of concrete and reinforcing bars between each cell and the next;
each connecting wail panel having a first pair of connector element at said first side edge for attachment to respective ones of the adjacent pair of first wall panels and a second pair of connector element at said second side edge for attachment to respective ones of the adjacent pair of second wall panels;
the first side wall panels being arranged to support without bowing cast concrete poured into the interior within each cell;
and a plurality of additional support walls which are extruded longitudinally to define a constant cross section along a length thereof;
each additional support wall being located between a respective pair of the connecting wall panels and extending generally parallel thereto and thus at right angles to the first side wall panel so as to support the first side wall panels against bowing;
each additional support wall being connected at its edges to an inwardly facing surface of the first and second side wall panels at positions thereon spaced from the side edges of the first and second side wall panels;
wherein the first and second pairs of connector elements on the connecting wall panels each comprise a T-shaped members for engagement into a respective co-operating C-shaped members on an inner surface of a respective one of the first and second panels at the respective side edge thereof.
5 Preferably the connecting wall panels each include a pair of projecting tongues extending therefrom generally at right angles thereto 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 wall panels each include a plurality of longitudinally extending ribs, each rib including a pair of sides and a panei portion.
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 plurality 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 connecting wall panels which are extruded longitudinally to define a constant cross section along a length of the panel including two opposed 6 side edges and an intermediate panel wall portion;
each connecting wall panel being arranged to span between the first and second side walls at with a first side edge of the connecting wall panel being connected to the side edges of an adjacent pair of the first side wall panels and with a second side edge of the conneoting wall panel being connected to the side edges of an adjacent pair of the second side wali panels to hold the first and second walls apart and define a hollow interior therebetween including a plural-ty of cells 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 said first side edge for attachment to respective ones of the adjacent pair of first wall panels and a second pair of connector element at said second side edge for attachment to respective ones of the adjacent pair of second wall panels;
the first side wall panels being arranged to support without bowing cast concrete poured into the interior within each cell;
and a plurality of additional support walls which are extruded longitudinally to define a constant cross section along a length thereof;
each additional support wall being located between a respective pair of the connecting wall panels and extending generally parallel thereto and thus at right angles to the first side wall panel so as to support the first side wall panels against bowing;
each additional support wall being connected at its edges to an inwardly facing surface of the first and second side wall panels at positions thereon spaced from the side edges of the first and second side wali panels;
wherein the wall portions and the connecting walls are identical.
According to a third aspect of the invention there is provided a set of extruded panels for use in constructing a form-work for concrete comprising:
a pfurality 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 waii 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 connecting 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;
each connecting wall panel being arranged to span between the first and second side walls at with a first side edge of the connecting wall panel being connected to the side edges of an adjacent pair of the first side wall panels and with a second side edge of the connecting wall panel being connected to the side edges of an adjacent pair of the second side wall panels 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 connecting wall panel having a plurality of holes for communication of ooncrete and reinforcing bars between each cell and the next;
each connecting wall panel having a first pair of connector element at said first side edge for attachment to respective ones of the adjacent pair of first wall panels and a second pair of connector element at said second side edge for attachment to respective ones of the adjacent pair of second wall panels;
the first side wall panels being arranged to support without bowing cast concrete poured into the interior within each cell;
and a plurality of additional support walls which are extruded longitudinally to define a constant cross section along a length thereof;
each between a respective pair of the connecting wall panels and extending generally parallel thereto and thus at right angles to the first side wall panel so as to support the first side wall panels against bowing;
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wherein each additional support wall is located between a respective pair of the connecting wall panels and extending generally parallel thereto and thus at right angles to the first side wall panel so as to support the first side wall panels against bowing;
each additional support wall being connected at its edges to an inwardly facing surface of the first and second side wall panels at positions thereon spaced from the side edges of the first and second side wall panels;
wherein the first and second pairs of connector elements on the connecting wall panels each comprise a T-shaped members for engagement into a respective co-operating C-shaped members on an inner surface of a respective one of the first and second panels at the respective side edge thereof;
and wherein each of the additi~onal support wells 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 support wall.
Three alternative embodiments of the invention will now be described in conjunction with the accompanying drawings in which:
Figure 1 is an isometric view showing in general a form-work for casting of concrete.
Figure 2 is a horizontal cross sectional view of a first embodiment of the panels according to the present invention to provide a form-work of the general construction shown in Figure 1.
Figure 3 is a horizontal cross sectional view of a second embodiment of the panels according to the present invention to provide a form-work of the general construction shown in Figure 1.
Figure 4 is a horizontal cross sectional view of a third embodiment of 5 the panels according to the present invention to provide a form-work of the general construction shown in Figure 1.
DETAILED DESCRIPTION
In Figure 1 is shown a formwork of the general type shown in the above Canadian patent of Rodighiero. Thus the construction includes a plursiity of 10 inside wall panels 10 which stand vertically upwardly and are connected at side edges 11 and 12 to form an inside wall structure 13. A similar outside wall structure 14 includes outside wall panels 15 and 16 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 allow concrete poured into the individual cells defined between the connecting members to pass between the cells 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 have 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 tongues 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 and inserted into the cell adjacent the side wall 14 and outside the tongues 22 and 23. The concrete is thus restricted to the area between the foam insulation material 24 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.
Turning firstly to Figure 2, it will be noted that the male connectors on the interconnecting walls 19 are generally T-shaped with a leg of the T
connected to the connecting wall 19 at its edge and the top of the T generally parallel to the connecting wall.
It will be further noted that the female naceptades 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 top 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 26B
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 panel 19 is not itself visible from the outside of the structure.
Thus the interconnections between the panels are in the form 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 is substantially equal to the thickness of the foam insert of insulation material.
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 construction of Figure 2 but is provided as an alternative mounting arrangement to allow flexibility in the construction to accommodate different structural arrangements and particularly the arrangement shown in Figure 3 which may be adopted in some circumstances.
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 accommodate expansion and contraction which will occur due to significant temperature changes at the outside surface, the outer wall panels 15 include ribs 33 and 34 each of which is defined by an inclined side wall 35, an outer panel portion 36 parallel to the plane 32 and a second inclined side wall 35. This arrangement aUows 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 of 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 formed by those ribs.
However the centre section between the ribs lies 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 cell and is prevented from bowing by the construction generally indicated at 30. In the embodiment of Figure 2 the arrangement which prevents the bowing is defined by an additional inside wall 40 and three transverse support wafls 41, 42 and 43. The inside wali 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 receptacles 26, with the inner wall 40 and with the transverse connecting walls 41, 42 and 43 to form an integrai closed structune defining four hollow interior cells between the transverse walls. The inner wall 40 is fully closed so that concrete is prevented from entering into the hollow interior cells. The width of the wall 42 is slightly greater then that of the watls 41 and 43 and also slightly greater than the cross bar 26A of the C-shape receptacle 26 so that the wall 40 is slightly V-shaped reaching an apex at the wall 42.
The double wall integral structure 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 cells can also provide a space for receiving utilities such as wiring and the like.
Turning now to Figure 3, there is shown an alternative construction which uses the same connector walls 19 and the same outer wall panels 15 as that of Figure 2.
In this embodiment the inner wall panel 10 includes the same C-shaped receptacles 26 but is formed only from a single sheet of plastics material as indicated at 50. In this embodiment the single wall 50 includes two female receptacles 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 supporting wall portion 54. Thus the C-shaped receptacles 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.
The wall portion 54 thus is supported by the female receptacles 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 56 which is identical in cross section to the 5 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 hollow 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 10 walls 50 and 56. Thus the whole of the structure is filled with concrete up to the wall 50 and the addi'tional wall 56 and the support wall 54 are present merely to provide support for the wall 50 during installation.
Turning now to Figure 4, there is shown a further altemative arrangement which uses the same inside wall panel 50 and connecting walls 19 as 15 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 conneGting wall 19.
In this embodiment, the support 30 is provided by an additional support wall 60 which is identical in cross section to the connecting walls 19 and extends thus across the full width of the cell from the side wall 50 to the outside wall panel 15A. Thus the outside panel 15A is modified relative to that of the previous embodiment by the addition of C-shaped receptacles 51A and 52A identical in construction to the receptacles 51 and 52 on the panel 50. Thus the T-shaped male connectors on the edge of the support wall are engaged into the receptacle defined by the receptacle portions 51A and 52A and at the same time the male connectors on the other edge of the wall 60 are engaged into the receptacles 51 and 52.
Thus the support wall bridges the whole width of the cell and communicates 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 effective 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 departing 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.
This Invention relates to a set of extruded form-work 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.
BACKGROUND OF THE INVENTION
There have been many attempts over the years to generate an alternative form of building construction which utilizes permanent forms into which concrete is poured and cured to provide the structurai strength for the exterior form work. The use of plastic extruded panels for the formwork has previously been proposed and these can be readily assembled on sight to provide a structure 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 cladding and providing in one step a finished attractive appearance.
One example and arrangement of this type is shown in Canadian Patent 957,816 (Rodighiero et al) 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 primarily by transversely extending stiffening ribs. However additional wali portions can be provided connected to the side wali 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 5,218,$83 (Nessa et al) issued June 8, 1993. This discloses a generally cylindrical structure with one open face where the cylindrical elements slide each into the next using maie and female couplings to form a similar permanent form work structure to develop the above patent but in which the structure takes the form of a series of interconnected columns.
Canadian Patents 2,215,939, 2,218,600 and 2,226,497 of Piccone disclose various constructions of fonn work of a similar nature to that shown in the above patent of Rodighiero but many shaped to form the column structure similar to that of Nessa.
It has been determined recently that the most commercial 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 substantially to a minimum so as to reduce the construction cost of the initial formwork. It is of course important also to minimize the labour involved in assembly of the structures on site.
One problem which arises In meeting 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 extruded 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 plurality 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 connecting 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;
each connecting wall panel being arranged to span between the first and second side walls at with a first side edge of the connecting wall panel being connected to the side edges of an adjacent pair of the first side wall panels and with a second side edge of the connecting wall panel being connected to the side edges of an adjacent pair of the second side wall panels 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 connecting wall panel having a plurality of holes for communication of concrete and reinforcing bars between each cell and the next;
each connecting wail panel having a first pair of connector element at said first side edge for attachment to respective ones of the adjacent pair of first wall panels and a second pair of connector element at said second side edge for attachment to respective ones of the adjacent pair of second wall panels;
the first side wall panels being arranged to support without bowing cast concrete poured into the interior within each cell;
and a plurality of additional support walls which are extruded longitudinally to define a constant cross section along a length thereof;
each additional support wall being located between a respective pair of the connecting wall panels and extending generally parallel thereto and thus at right angles to the first side wall panel so as to support the first side wall panels against bowing;
each additional support wall being connected at its edges to an inwardly facing surface of the first and second side wall panels at positions thereon spaced from the side edges of the first and second side wall panels;
wherein the first and second pairs of connector elements on the connecting wall panels each comprise a T-shaped members for engagement into a respective co-operating C-shaped members on an inner surface of a respective one of the first and second panels at the respective side edge thereof.
5 Preferably the connecting wall panels each include a pair of projecting tongues extending therefrom generally at right angles thereto 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 wall panels each include a plurality of longitudinally extending ribs, each rib including a pair of sides and a panei portion.
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 plurality 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 connecting wall panels which are extruded longitudinally to define a constant cross section along a length of the panel including two opposed 6 side edges and an intermediate panel wall portion;
each connecting wall panel being arranged to span between the first and second side walls at with a first side edge of the connecting wall panel being connected to the side edges of an adjacent pair of the first side wall panels and with a second side edge of the conneoting wall panel being connected to the side edges of an adjacent pair of the second side wali panels to hold the first and second walls apart and define a hollow interior therebetween including a plural-ty of cells 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 said first side edge for attachment to respective ones of the adjacent pair of first wall panels and a second pair of connector element at said second side edge for attachment to respective ones of the adjacent pair of second wall panels;
the first side wall panels being arranged to support without bowing cast concrete poured into the interior within each cell;
and a plurality of additional support walls which are extruded longitudinally to define a constant cross section along a length thereof;
each additional support wall being located between a respective pair of the connecting wall panels and extending generally parallel thereto and thus at right angles to the first side wall panel so as to support the first side wall panels against bowing;
each additional support wall being connected at its edges to an inwardly facing surface of the first and second side wall panels at positions thereon spaced from the side edges of the first and second side wali panels;
wherein the wall portions and the connecting walls are identical.
According to a third aspect of the invention there is provided a set of extruded panels for use in constructing a form-work for concrete comprising:
a pfurality 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 waii 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 connecting 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;
each connecting wall panel being arranged to span between the first and second side walls at with a first side edge of the connecting wall panel being connected to the side edges of an adjacent pair of the first side wall panels and with a second side edge of the connecting wall panel being connected to the side edges of an adjacent pair of the second side wall panels 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 connecting wall panel having a plurality of holes for communication of ooncrete and reinforcing bars between each cell and the next;
each connecting wall panel having a first pair of connector element at said first side edge for attachment to respective ones of the adjacent pair of first wall panels and a second pair of connector element at said second side edge for attachment to respective ones of the adjacent pair of second wall panels;
the first side wall panels being arranged to support without bowing cast concrete poured into the interior within each cell;
and a plurality of additional support walls which are extruded longitudinally to define a constant cross section along a length thereof;
each between a respective pair of the connecting wall panels and extending generally parallel thereto and thus at right angles to the first side wall panel so as to support the first side wall panels against bowing;
~
wherein each additional support wall is located between a respective pair of the connecting wall panels and extending generally parallel thereto and thus at right angles to the first side wall panel so as to support the first side wall panels against bowing;
each additional support wall being connected at its edges to an inwardly facing surface of the first and second side wall panels at positions thereon spaced from the side edges of the first and second side wall panels;
wherein the first and second pairs of connector elements on the connecting wall panels each comprise a T-shaped members for engagement into a respective co-operating C-shaped members on an inner surface of a respective one of the first and second panels at the respective side edge thereof;
and wherein each of the additi~onal support wells 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 support wall.
Three alternative embodiments of the invention will now be described in conjunction with the accompanying drawings in which:
Figure 1 is an isometric view showing in general a form-work for casting of concrete.
Figure 2 is a horizontal cross sectional view of a first embodiment of the panels according to the present invention to provide a form-work of the general construction shown in Figure 1.
Figure 3 is a horizontal cross sectional view of a second embodiment of the panels according to the present invention to provide a form-work of the general construction shown in Figure 1.
Figure 4 is a horizontal cross sectional view of a third embodiment of 5 the panels according to the present invention to provide a form-work of the general construction shown in Figure 1.
DETAILED DESCRIPTION
In Figure 1 is shown a formwork of the general type shown in the above Canadian patent of Rodighiero. Thus the construction includes a plursiity of 10 inside wall panels 10 which stand vertically upwardly and are connected at side edges 11 and 12 to form an inside wall structure 13. A similar outside wall structure 14 includes outside wall panels 15 and 16 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 allow concrete poured into the individual cells defined between the connecting members to pass between the cells 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 have 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 tongues 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 and inserted into the cell adjacent the side wall 14 and outside the tongues 22 and 23. The concrete is thus restricted to the area between the foam insulation material 24 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.
Turning firstly to Figure 2, it will be noted that the male connectors on the interconnecting walls 19 are generally T-shaped with a leg of the T
connected to the connecting wall 19 at its edge and the top of the T generally parallel to the connecting wall.
It will be further noted that the female naceptades 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 top 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 26B
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 panel 19 is not itself visible from the outside of the structure.
Thus the interconnections between the panels are in the form 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 is substantially equal to the thickness of the foam insert of insulation material.
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 construction of Figure 2 but is provided as an alternative mounting arrangement to allow flexibility in the construction to accommodate different structural arrangements and particularly the arrangement shown in Figure 3 which may be adopted in some circumstances.
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 accommodate expansion and contraction which will occur due to significant temperature changes at the outside surface, the outer wall panels 15 include ribs 33 and 34 each of which is defined by an inclined side wall 35, an outer panel portion 36 parallel to the plane 32 and a second inclined side wall 35. This arrangement aUows 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 of 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 formed by those ribs.
However the centre section between the ribs lies 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 cell and is prevented from bowing by the construction generally indicated at 30. In the embodiment of Figure 2 the arrangement which prevents the bowing is defined by an additional inside wall 40 and three transverse support wafls 41, 42 and 43. The inside wali 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 receptacles 26, with the inner wall 40 and with the transverse connecting walls 41, 42 and 43 to form an integrai closed structune defining four hollow interior cells between the transverse walls. The inner wall 40 is fully closed so that concrete is prevented from entering into the hollow interior cells. The width of the wall 42 is slightly greater then that of the watls 41 and 43 and also slightly greater than the cross bar 26A of the C-shape receptacle 26 so that the wall 40 is slightly V-shaped reaching an apex at the wall 42.
The double wall integral structure 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 cells can also provide a space for receiving utilities such as wiring and the like.
Turning now to Figure 3, there is shown an alternative construction which uses the same connector walls 19 and the same outer wall panels 15 as that of Figure 2.
In this embodiment the inner wall panel 10 includes the same C-shaped receptacles 26 but is formed only from a single sheet of plastics material as indicated at 50. In this embodiment the single wall 50 includes two female receptacles 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 supporting wall portion 54. Thus the C-shaped receptacles 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.
The wall portion 54 thus is supported by the female receptacles 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 56 which is identical in cross section to the 5 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 hollow 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 10 walls 50 and 56. Thus the whole of the structure is filled with concrete up to the wall 50 and the addi'tional wall 56 and the support wall 54 are present merely to provide support for the wall 50 during installation.
Turning now to Figure 4, there is shown a further altemative arrangement which uses the same inside wall panel 50 and connecting walls 19 as 15 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 conneGting wall 19.
In this embodiment, the support 30 is provided by an additional support wall 60 which is identical in cross section to the connecting walls 19 and extends thus across the full width of the cell from the side wall 50 to the outside wall panel 15A. Thus the outside panel 15A is modified relative to that of the previous embodiment by the addition of C-shaped receptacles 51A and 52A identical in construction to the receptacles 51 and 52 on the panel 50. Thus the T-shaped male connectors on the edge of the support wall are engaged into the receptacle defined by the receptacle portions 51A and 52A and at the same time the male connectors on the other edge of the wall 60 are engaged into the receptacles 51 and 52.
Thus the support wall bridges the whole width of the cell and communicates 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 effective 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 departing 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 (9)
1. A set of extruded panels for use in constructing a form-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 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 connecting 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;
each connecting wall panel being arranged to span between the first and second side walls at with a first side edge of the connecting wall panel having connecting means thereon for connection to the side edges of an adjacent pair of the first side wall panels and with a second side edge of the connecting wall panel having connecting means thereon for connection to the side edges of an adjacent pair of the second side wall panels 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 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 said first side edge for attachment to respective ones of the adjacent pair of first wall panels and a second pair of connector element at said second side edge for attachment to respective ones of the adjacent pair of second wall panels;
the first side wall panels being arranged to support without bowing cast concrete poured into the interior within each cell;
and a plurality of additional support walls which are extruded longitudinally to define a constant cross section along a length thereof;
each additional support wall being located between a respective pair of the connecting wall panels and extending generally parallel thereto and thus at right angles to the first side wall panel so as to support the first side wall panels against bowing;
each additional support wall having connecting means thereon for connection at its edges to an inwardly facing surface of the first and second side wall panels at positions thereon spaced from the side edges of the first and second side wall panels;
wherein the first and second pairs of connector elements on the connecting wall panels each comprise a T-shaped members for engagement into a respective co-operating C-shaped members on an inner surface of a respective one of the first and second panels at the respective side edge thereof.
a plurality 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 connecting 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;
each connecting wall panel being arranged to span between the first and second side walls at with a first side edge of the connecting wall panel having connecting means thereon for connection to the side edges of an adjacent pair of the first side wall panels and with a second side edge of the connecting wall panel having connecting means thereon for connection to the side edges of an adjacent pair of the second side wall panels 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 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 said first side edge for attachment to respective ones of the adjacent pair of first wall panels and a second pair of connector element at said second side edge for attachment to respective ones of the adjacent pair of second wall panels;
the first side wall panels being arranged to support without bowing cast concrete poured into the interior within each cell;
and a plurality of additional support walls which are extruded longitudinally to define a constant cross section along a length thereof;
each additional support wall being located between a respective pair of the connecting wall panels and extending generally parallel thereto and thus at right angles to the first side wall panel so as to support the first side wall panels against bowing;
each additional support wall having connecting means thereon for connection at its edges to an inwardly facing surface of the first and second side wall panels at positions thereon spaced from the side edges of the first and second side wall panels;
wherein the first and second pairs of connector elements on the connecting wall panels each comprise a T-shaped members for engagement into a respective co-operating C-shaped members on an inner surface of a respective one of the first and second panels at the respective side edge thereof.
2. The set of extruded panels according to Claim 1 wherein the connecting wall panels each include a pair of projecting tongues extending therefrom generally at right angles thereto 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.
3. The set of extruded panels according to Claim 1 or 2 wherein the second wall panels each include a plurality of longitudinally extending ribs, each rib including a pair of sides and a panel portion.
4. A set of extruded panels for use in constructing a form-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 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 connecting 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;
each connecting wall panel being arranged to span between the first and second side walls at with a first side edge of the connecting wall panel having connecting means thereon for connection to the side edges of an adjacent pair of the first side wall panels and with a second side edge of the connecting wall panel having connecting means thereon for connection to the side edges of an adjacent pair of the second side wall panels 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 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 said first side edge for attachment to respective ones of the adjacent pair of first wall panels and a second pair of connector element at said second side edge for attachment to respective ones of the adjacent pair of second wall panels;
the first side wall panels being arranged to support without bowing cast concrete poured into the interior within each cell;
and a plurality of additional support walls which are extruded longitudinally to define a constant cross section along a length thereof;
each additional support wall being located between a respective pair of the connecting wall panels and extending generally parallel thereto and thus at right angles to the first side wall panel so as to support the first side wall panels against bowing;
each additional support wall having connecting means thereon for connection at its edges to an inwardly facing surface of the first and second side wall panels at positions thereon spaced from the side edges of the first and second side wall panels;
wherein the wall portions and the connecting walls are identical.
a plurality 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 connecting 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;
each connecting wall panel being arranged to span between the first and second side walls at with a first side edge of the connecting wall panel having connecting means thereon for connection to the side edges of an adjacent pair of the first side wall panels and with a second side edge of the connecting wall panel having connecting means thereon for connection to the side edges of an adjacent pair of the second side wall panels 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 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 said first side edge for attachment to respective ones of the adjacent pair of first wall panels and a second pair of connector element at said second side edge for attachment to respective ones of the adjacent pair of second wall panels;
the first side wall panels being arranged to support without bowing cast concrete poured into the interior within each cell;
and a plurality of additional support walls which are extruded longitudinally to define a constant cross section along a length thereof;
each additional support wall being located between a respective pair of the connecting wall panels and extending generally parallel thereto and thus at right angles to the first side wall panel so as to support the first side wall panels against bowing;
each additional support wall having connecting means thereon for connection at its edges to an inwardly facing surface of the first and second side wall panels at positions thereon spaced from the side edges of the first and second side wall panels;
wherein the wall portions and the connecting walls are identical.
5. The set of extruded panels according to Claim 4 wherein the second wall panels each include a plurality of longitudinally extending ribs, each rib including a pair of sides and a panel portion.
6. The set of extruded panels according to Claim 4 or 5 wherein the connecting wall panels each include a pair of projecting tongues extending therefrom generally at right angles thereto 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.
7. A set of extruded panels for use in constructing a form-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 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 connecting 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;
each connecting wall panel being arranged to span between the first and second side walls at with a first side edge of the connecting wall panel having connecting means thereon for connection to the side edges of an adjacent pair of the first side wall panels and with a second side edge of the connecting wall panel having connecting means thereon for connection to the side edges of an adjacent pair of the second side wall panels 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 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 said first side edge for attachment to respective ones of the adjacent pair of first wall panels and a second pair of connector element at said second side edge for attachment to respective ones of the adjacent pair of second wall panels;
the first side wall panels being arranged to support without bowing cast concrete poured into the interior within each cell;
and a plurality of additional support walls which are extruded longitudinally to define a constant cross section along a length thereof;
each between a respective pair of the connecting wall panels and extending generally parallel thereto and thus at right angles to the first side wall panel so as to support the first side wall panels against bowing;
wherein each additional support wall is located between a respective pair of the connecting wall panels and extending generally parallel thereto and thus at right angles to the first side wall panel so as to support the first side wall panels against bowing;
each additional support wall having connecting means thereon for connection at its edges to an inwardly facing surface of the first and second side wall panels at positions thereon spaced from the side edges of the first and second side wall panels;
wherein the first and second pairs of connector elements on the connecting wall panels each comprise a T-shaped members for engagement into a respective co-operating C-shaped members on an inner surface of a respective one of the first and second panels at the respective side edge thereof;
and wherein each of the additional support walls 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 support wall.
a plurality 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 connecting 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;
each connecting wall panel being arranged to span between the first and second side walls at with a first side edge of the connecting wall panel having connecting means thereon for connection to the side edges of an adjacent pair of the first side wall panels and with a second side edge of the connecting wall panel having connecting means thereon for connection to the side edges of an adjacent pair of the second side wall panels 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 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 said first side edge for attachment to respective ones of the adjacent pair of first wall panels and a second pair of connector element at said second side edge for attachment to respective ones of the adjacent pair of second wall panels;
the first side wall panels being arranged to support without bowing cast concrete poured into the interior within each cell;
and a plurality of additional support walls which are extruded longitudinally to define a constant cross section along a length thereof;
each between a respective pair of the connecting wall panels and extending generally parallel thereto and thus at right angles to the first side wall panel so as to support the first side wall panels against bowing;
wherein each additional support wall is located between a respective pair of the connecting wall panels and extending generally parallel thereto and thus at right angles to the first side wall panel so as to support the first side wall panels against bowing;
each additional support wall having connecting means thereon for connection at its edges to an inwardly facing surface of the first and second side wall panels at positions thereon spaced from the side edges of the first and second side wall panels;
wherein the first and second pairs of connector elements on the connecting wall panels each comprise a T-shaped members for engagement into a respective co-operating C-shaped members on an inner surface of a respective one of the first and second panels at the respective side edge thereof;
and wherein each of the additional support walls 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 support wall.
8. The set of extruded panels according to Claim 7 wherein the second wall panels each include a plurality of longitudinally extending ribs, each rib including a pair of sides and a panel portion.
9. The set of extruded panels according to Claim 7 or 8 wherein the connecting wall panels each include a pair of projecting tongues extending therefrom generally at right angles thereto 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.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2298319 CA2298319C (en) | 2000-02-09 | 2000-02-09 | Extruded permanent form-work for concrete |
| CA2594374A CA2594374C (en) | 2000-02-09 | 2000-02-09 | Extruded permanent form-work for concrete |
| US11/351,301 US20060213140A1 (en) | 2000-02-09 | 2006-02-10 | Extruded permanent form-work for concrete |
| US12/288,104 US7818936B2 (en) | 2000-02-09 | 2008-10-15 | Extruded permanent form-work for concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2298319 CA2298319C (en) | 2000-02-09 | 2000-02-09 | Extruded permanent form-work for concrete |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2594374A Division CA2594374C (en) | 2000-02-09 | 2000-02-09 | Extruded permanent form-work for concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2298319A1 CA2298319A1 (en) | 2001-08-09 |
| CA2298319C true CA2298319C (en) | 2007-10-02 |
Family
ID=4165286
Family Applications (2)
| 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 |
| CA2594374A Expired - Lifetime CA2594374C (en) | 2000-02-09 | 2000-02-09 | Extruded permanent form-work for concrete |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2594374A Expired - Lifetime CA2594374C (en) | 2000-02-09 | 2000-02-09 | Extruded permanent form-work for concrete |
Country Status (1)
| Country | Link |
|---|---|
| CA (2) | CA2298319C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2741462A1 (en) * | 2008-10-24 | 2010-04-29 | 2158484 Ontario Inc. | Concrete form block module and form block structure |
| WO2010078645A1 (en) | 2009-01-07 | 2010-07-15 | 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 |
| CN115467512B (en) * | 2022-09-21 | 2024-09-20 | 中国建筑第八工程局有限公司 | Concrete formwork support device convenient to install and application method thereof |
-
2000
- 2000-02-09 CA CA 2298319 patent/CA2298319C/en not_active Expired - Lifetime
- 2000-02-09 CA CA2594374A patent/CA2594374C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2298319A1 (en) | 2001-08-09 |
| CA2594374C (en) | 2010-12-21 |
| CA2594374A1 (en) | 2001-08-09 |
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