CA2110342C - Wall form support system - Google Patents
Wall form support systemInfo
- Publication number
- CA2110342C CA2110342C CA 2110342 CA2110342A CA2110342C CA 2110342 C CA2110342 C CA 2110342C CA 2110342 CA2110342 CA 2110342 CA 2110342 A CA2110342 A CA 2110342A CA 2110342 C CA2110342 C CA 2110342C
- Authority
- CA
- Canada
- Prior art keywords
- strongback
- tie
- flange
- base
- tie plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
- E04G17/065—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning
- E04G17/0651—One-piece elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/08—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring
- E04G11/12—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring of elements and beams which are mounted during erection of the shuttering to brace or couple the elements
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Panels For Use In Building Construction (AREA)
- Load-Bearing And Curtain Walls (AREA)
Abstract
The present invention relates to concrete forming structures and in particular to concrete wall forming structures and further to strongback members used to support, at a rear edge of a wall form, the concrete wall forming structure. The strongback provides horizontal support to exterior upright structural members and the strongbacks include cooperating tie plates associates with tie bars which typically pass through the concrete material. Preferably, the strongback is an extruded member of a channel-like cross section defined by a base with opposed flanges extending from the opposite ends of the base and to one side thereof. One of the flanges includes a slot arrangement which cooperates to engage to a tie plate which can be initially supported from the strongback.
The tie plate will then pass through a tie bar and an appropriate mechanical arrangement will allow tensioning of the tie bar. In one embodiment, the opposite flange from the one flange which cooperates with the tie plate is adapted to have a drop in wedge shape for cooperating with an upwardly opening bracket attached to an upright member.
In this way, the strong back is easily supported from the wall form structure and conveniently supports, in an operative position, the tie plate in preparation for securing of the tie plate and also engages one end of the tie plate when a tensioning load is applied to the strongback. A modified tie plate for high load applications is also disclosed which cooperates and engages the slot provided in the flange of the strongback and overlies this flange and overlies the base member and is adapted to contact an upright member adjacent the point of contact of the strongback with an upright member. Thus, the tie plate is adapted to directly transmit some forces exerted thereon to an upright support member as well as through the strong back.
The tie plate will then pass through a tie bar and an appropriate mechanical arrangement will allow tensioning of the tie bar. In one embodiment, the opposite flange from the one flange which cooperates with the tie plate is adapted to have a drop in wedge shape for cooperating with an upwardly opening bracket attached to an upright member.
In this way, the strong back is easily supported from the wall form structure and conveniently supports, in an operative position, the tie plate in preparation for securing of the tie plate and also engages one end of the tie plate when a tensioning load is applied to the strongback. A modified tie plate for high load applications is also disclosed which cooperates and engages the slot provided in the flange of the strongback and overlies this flange and overlies the base member and is adapted to contact an upright member adjacent the point of contact of the strongback with an upright member. Thus, the tie plate is adapted to directly transmit some forces exerted thereon to an upright support member as well as through the strong back.
Description
2110~2 TITLE: WALL FORM SUPPORT SYSTEM
FIELD OF THE INVENTION
The present invention relates to concrete wall forming structures and in particular relates to strongback members used in such concrete wall forming structures and tie plates used to secure a tie bar.
BACKGROUND OF THE INVENTION
Concrete wall forming structures are now used as a common construction technique for forming of concrete walls and in particular, in forming reinforced concrete walls or high load concrete walls. This technique has found particular acceptance in commercial construction, although it is also used in residential construction. Basically, a wall form is assembled and then concrete is placed within the wall form and allowed to cure or substantially cure.
The wall form can then be removed and reassembled for the next application. This construction technique requires assembly of the wall form, but it can be carried out quite quickly and often by labour less skilled than a block layer. Furthermore, this construction technique can be used in load applications much higher than would be suitable for concrete block.
Commercial constructions has used a number of arrangements for simplifying forms used to support concrete until it cures. In particular, flying forms are now the standard with respect to forming of concrete floors typically used in high rise construction. Basically, the form is assembled then properly located, followed by the pouring of the concrete and after the concrete is appropriately cured, the form may then be removed and advanced to the next location in its basically assembled form for forming of the next floor. Therefore, construction commonly requires labour to assemble concrete forms and this also true of wall forms. The present invention provides a particular strongback which has proven to be very effective in supporting of upright members used ~?H-8843/CA
21103~2 in the wall form arrangement, with this strongback being adapted to conveniently be supported from the wall from and also to cooperate with tie plates for effective transfer of the load from the tie bar to the wall form structure. As can be appreciated, a wall form structure typically has opposed walls which define a gap in which concrete is poured and the walls are maintained in their predetermined location primarily by tie bars which pass from one structure to the other. Therefore, the wall form structure must be capable of supporting the loads exerted thereon during the pouring of the concrete into the wall form and the subsequent support of the concrete until it is cured.
Extremely high loads can be encountered, however, suitable reinforcing and tying from one wall of the wall form to the other has proven more than adequate. The strongback and tie plate, according to the present invention, is easy to manufacture and simplifies assembly and knockdown of these components from a wall form structure.
SUMMARY OF THE INVENTION
A wall form arrangement for use in forming of concrete walls, according to the present invention, comprises sheeting material forming a concrete engaging surface supported therebehind by upright structural members to form individual panels which are adapted to cooperate with like panels to form the wall form. The wall form arrangement includes strongbacks which provide horizontal support to the exterior to the upright structural members.
The strongbacks also engage tie plates associated with tie bars which pass generally perpendicular through the panels.
Each strongback is of a channel cross section defined by a base with opposed flanges generally perpendicular to the base and being located to one side of the base. One of the flanges of the strongback cooperates with the tie plates to engage the tie plate and maintain the tie plate in a generally perpendicular orientation to the one flange when the tie plate is maintaining any axial tie bar load exerted thereon by the tie bar in engagement therewith.
WH-8843~CA 2 1 1 0 ~ ~ 2 According to a preferred aspect of the invention, the opposite flange from the one flange of the strongback is of a wedge shape to cooperate with a similar female member attached to the uprights whereby the strongback may be supported from the uprights by being placed in these female components attached to the uprights. This essentially provides a drop in support arrangement for the strongbacks to the wall form structure and simplifies assembly and knockdown of the wall form structure. The upright members can have these female members attached to them at various points. In a preferred embodiment, the female component is cooperatively defined between an outer face of the upright member and a flange of the female member to define the cavity between this component and the upright. Typically, the upright has a bolt slot which will allow attachment of the female member to the upright at the desired position. As can be appreciated, this component will stay with the upright and be appropriately located when the panels are placed in their particular end to end relationship or stacked relationship to define a wall form.
The present invention is not only directed to the ultimate combination forming a wall form or certain components thereof which cooperate in a particular manner, but it is also directed to a particular strongback. The strongback is an extruded member of a channel cross section defined by a base with opposed flanges extending from opposite ends of the base and to one side of the base. One of the flanges includes a slot arrangement by means of which a tie plate may be initially supported from the strongback.
According to a preferred aspect of the invention, the slot arrangement of the strongback is outwardly opening and is provided in an exterior surface of the one flange, which exterior surface is generally planar to and generally perpendicular to the base. It is preferred that the slot arrangement is partially closed, and thus, will support the tie plate therein in a drop-in type arrangement such that it can be initially located prior to engagement with a tie 21103~2 bar. Typically there is some play and it may be sleeved on a tie bar and then supported and located on the strongback by means of the slot arrangement cooperating with the tie plate. This drop-in securement also serves to maintain the generally perpendicular orientation of the tie plate and strongback when loaded by a tie bar.
According to yet a further aspect of the invention, the strongback cooperates with a particular shape of tie plate which has a male component positioned for engagement in the slot of the strongback. For high load applications, the tie plate also includes a perpendicular leg which can be orientated to be generally parallel with the base of the strongback and have a base flange which can engage an upright member or a further component of the wall form structure for transferring loads thereto. Thus, the strongback and the tle plate serve to transfer loads to other components of the wall form and in particular transfer to the upright member associated therewith.
It is preferred that the strongback be asymmetrical and thus, the strongback may have a similar strongback stacked thereabove to provide effective support of the load between adjacent ends of strongback members in the length of the wall form. It can be appreciated that the overlap arrangement will provide effective support along the entire length of the wall form and this overlap may only be of a very short duration if strongbacks are placed in aligned end-to-end relationship and thus, the overlap member only provides direct support at the area of the junction.
BRIEF DESCRIPTION OF THE DRAWINGS
Preferred embodiments of the invention are shown in the drawings, wherein:
Figure 1 a top view partially showing a wall forming structure;
Figures 2 and 3 are a top view of panels used in forming the wall forming structure;
Figure 4 is an elevation of a panel of the wall form;
~H-8843/CA
Figure 5 is a rear elevation of an assembled wall form;
Figure 6 is a sectional view of the strongbacki Figure 7 is a sectional view of a modified tie plate;
Figure 8 is a partial side view showing attachment of strongbacks to the wall form;
Figure 9 is a partial elevation showing attachment of the strongbacks to the wall form; and Figure 10 is a sectional view showing a strongback and a modified tie plate in a cooperating configuration.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Wall forms, as generally shown in Figure 1, have been used for forming of concrete walls. The wall forms include opposed walls 4 which are appropriately supported therebehind and are typically tied together by tie bars 14 which engage the rear support structure of each opposed wall. The wall form of the present invention distinguishes over the prior art due to the particular cooperation of the strongback with the upright members and the cooperation of the strongback with the tie plate as well as the improved structure of the strongback and a particular structure of a modified tie plate for high load applications.
The wall form 2 having the opposed walls 4 have sheeting material 6, which is typically of a plywood or other suitable material, which limits the concrete and has the exterior surface of the final concrete wall produced by abutment with the sheeting material. The sheeting material is supported by uprights 8, which are typically of an I-beam construction and typically have a bolt slot 9 on the exterior surface thereof. Strongbacks 10 run horizontally and serve to connect the different panels and maintain them in an assembled condition. Individual panels are used to form the wall form structure 2 and two such panels are shown in Figures 2 and 3. Each panel is generally indicated as 18, but it can be seen that they are of different horizontal widths. The panels are typically placed in side by side abutting orientation to define one of the opposed walls 4 and are maintained in this position by connecting of the strongbacks 10 therebehind. Tie bars extend through the wall form structure, generally perpendicular to the opposed walls, and a tension force is placed on the tie bars through tie plates 12 which slide over the tie bars and a suitable mechanical arrangement, such as a bolt for engaging the tie bar and applying pressure to the tie plate. The tie plate is at least partially supported by the strongbacks 10.
The generally flat tie plate 12 of Figure 8 can be used with a single strongback, as shown in Figure 8a. Each tie plate 12 includes a tab projection 64 which is received in slot 48. Lip 50 partially closes the slot and overlaps with tab projection 64 to maintain the tie plate in a generally perpendicular orientation relative to the strongback when loaded by the tension force of the tie bar.
Therefore, the slot and lip arrangement of the strongback cooperate with the stub flange 48 of the tie plate to offset the tendency of the tie plate to rotate about the edge of the strongback adjacent the tie bar. The arrangement is suitable for many applications of forming structures and is also suitable when overlapping strongbacks are used, as shown in Figure 8.
As shown in Figure 5 and Figures 8 and 9, a wedge clamp 26 is mechanically fastened by a bolt arrangement 28 (preferably a bolt and wing nut as shown in Figure 8) to an upright 8 by means of the bolt slot 9. The wedge clamp 26 defines a slot 27 between the upright and the wedge clamp.
The strongback 10 includes flange 40 and opposed flange 42 separated by a web or base member 44. The flanges are generally perpendicular to the base 44 and extend to one side of the base. Flange 42 is of a wedge shape and is adapted to be received snuggly within the slot 27 defined between the wedge clamp 26 and an upright 8.
The opposite flange 40 on the exterior surface 46 includes a slot 48 which is partially closed at a lower edge by the lip 50. Figure 8 illustrates how the tie plate 12, which in this case is generally a planar tie plate, can cooperate with an overlapping strongback lOa and engage the exterior surface thereof by contacting, with the projecting stub flange 52, the lip 50 of both overlapping strongbacks. the tie bar 14 passes between the overlapping strongbacks and passes through a port in the tie plate 12. Tension is applied by the bolt 15 being fastened to the tie bar. This assembled overlapping relationship is shown in the partial elevation of Figure 9.
A modified tie plate and cooperating strongback are shown in Figure 10. In this case, the modified tie plate 60 has a plate member 61 which generally is planar and similar to the tie plate shown in Figure 8. A port 62 is provided in plate 61 for allowing the tie bar to pass therethrough. The plate has been modified by including a perpendicular web 66 which terminates in an outwardly extending foot flange 68 generally perpendicular to the web 66. In addition, in the web 66, a further tie bar receiving port 70 is provided. This port can be used for allowing the tie plate to orientate the web 66 to overlap the outer ends of overlapping strongbacks, as would be the case as generally shown in Figure 8. In the case where the strongbacks are not overlapping and a tie plate is used, the modified tie plate cooperates with the strongback in the manner as shown in Figure 10. In this case, the strongback 10 can initially support the tie bar plate due to the tab projection 64 being received in the slot 48 and maintained therein due to the lip 50. As pressure is applied to plate member 61 when the tie bar is placed in tension, the web 66 will be drawn against the tie bar, and therefore, the tie bar will provide partial support to limit the distortion of the tie plate. This modified tie plate is useful in high load applications.
The strongback 10, the modified tie plate 60 and the more typical tie plate 12 can all be made of an aluminum alloy such as those alloys now typically used in construction. It is also apparent that it can be made of other suitable materials and are not limited to this ~H-8843/CA
particular aluminum alloy. Extrusion allows the parts to be manufactured relatively inexpensively and the strongbacks require no additional manufacturing steps after extrusion, whereas the modified tie plate 60 and the tie plate 12 merely require suitable porting to allow reception of a tie bar therethrough.
Although various preferred embodiments of the present invention have been described herein in detail, it will be appreciated by those skilled in the art, that variations may be made thereto without departing from the spirit of the invention or the scope of the appended claims.
FIELD OF THE INVENTION
The present invention relates to concrete wall forming structures and in particular relates to strongback members used in such concrete wall forming structures and tie plates used to secure a tie bar.
BACKGROUND OF THE INVENTION
Concrete wall forming structures are now used as a common construction technique for forming of concrete walls and in particular, in forming reinforced concrete walls or high load concrete walls. This technique has found particular acceptance in commercial construction, although it is also used in residential construction. Basically, a wall form is assembled and then concrete is placed within the wall form and allowed to cure or substantially cure.
The wall form can then be removed and reassembled for the next application. This construction technique requires assembly of the wall form, but it can be carried out quite quickly and often by labour less skilled than a block layer. Furthermore, this construction technique can be used in load applications much higher than would be suitable for concrete block.
Commercial constructions has used a number of arrangements for simplifying forms used to support concrete until it cures. In particular, flying forms are now the standard with respect to forming of concrete floors typically used in high rise construction. Basically, the form is assembled then properly located, followed by the pouring of the concrete and after the concrete is appropriately cured, the form may then be removed and advanced to the next location in its basically assembled form for forming of the next floor. Therefore, construction commonly requires labour to assemble concrete forms and this also true of wall forms. The present invention provides a particular strongback which has proven to be very effective in supporting of upright members used ~?H-8843/CA
21103~2 in the wall form arrangement, with this strongback being adapted to conveniently be supported from the wall from and also to cooperate with tie plates for effective transfer of the load from the tie bar to the wall form structure. As can be appreciated, a wall form structure typically has opposed walls which define a gap in which concrete is poured and the walls are maintained in their predetermined location primarily by tie bars which pass from one structure to the other. Therefore, the wall form structure must be capable of supporting the loads exerted thereon during the pouring of the concrete into the wall form and the subsequent support of the concrete until it is cured.
Extremely high loads can be encountered, however, suitable reinforcing and tying from one wall of the wall form to the other has proven more than adequate. The strongback and tie plate, according to the present invention, is easy to manufacture and simplifies assembly and knockdown of these components from a wall form structure.
SUMMARY OF THE INVENTION
A wall form arrangement for use in forming of concrete walls, according to the present invention, comprises sheeting material forming a concrete engaging surface supported therebehind by upright structural members to form individual panels which are adapted to cooperate with like panels to form the wall form. The wall form arrangement includes strongbacks which provide horizontal support to the exterior to the upright structural members.
The strongbacks also engage tie plates associated with tie bars which pass generally perpendicular through the panels.
Each strongback is of a channel cross section defined by a base with opposed flanges generally perpendicular to the base and being located to one side of the base. One of the flanges of the strongback cooperates with the tie plates to engage the tie plate and maintain the tie plate in a generally perpendicular orientation to the one flange when the tie plate is maintaining any axial tie bar load exerted thereon by the tie bar in engagement therewith.
WH-8843~CA 2 1 1 0 ~ ~ 2 According to a preferred aspect of the invention, the opposite flange from the one flange of the strongback is of a wedge shape to cooperate with a similar female member attached to the uprights whereby the strongback may be supported from the uprights by being placed in these female components attached to the uprights. This essentially provides a drop in support arrangement for the strongbacks to the wall form structure and simplifies assembly and knockdown of the wall form structure. The upright members can have these female members attached to them at various points. In a preferred embodiment, the female component is cooperatively defined between an outer face of the upright member and a flange of the female member to define the cavity between this component and the upright. Typically, the upright has a bolt slot which will allow attachment of the female member to the upright at the desired position. As can be appreciated, this component will stay with the upright and be appropriately located when the panels are placed in their particular end to end relationship or stacked relationship to define a wall form.
The present invention is not only directed to the ultimate combination forming a wall form or certain components thereof which cooperate in a particular manner, but it is also directed to a particular strongback. The strongback is an extruded member of a channel cross section defined by a base with opposed flanges extending from opposite ends of the base and to one side of the base. One of the flanges includes a slot arrangement by means of which a tie plate may be initially supported from the strongback.
According to a preferred aspect of the invention, the slot arrangement of the strongback is outwardly opening and is provided in an exterior surface of the one flange, which exterior surface is generally planar to and generally perpendicular to the base. It is preferred that the slot arrangement is partially closed, and thus, will support the tie plate therein in a drop-in type arrangement such that it can be initially located prior to engagement with a tie 21103~2 bar. Typically there is some play and it may be sleeved on a tie bar and then supported and located on the strongback by means of the slot arrangement cooperating with the tie plate. This drop-in securement also serves to maintain the generally perpendicular orientation of the tie plate and strongback when loaded by a tie bar.
According to yet a further aspect of the invention, the strongback cooperates with a particular shape of tie plate which has a male component positioned for engagement in the slot of the strongback. For high load applications, the tie plate also includes a perpendicular leg which can be orientated to be generally parallel with the base of the strongback and have a base flange which can engage an upright member or a further component of the wall form structure for transferring loads thereto. Thus, the strongback and the tle plate serve to transfer loads to other components of the wall form and in particular transfer to the upright member associated therewith.
It is preferred that the strongback be asymmetrical and thus, the strongback may have a similar strongback stacked thereabove to provide effective support of the load between adjacent ends of strongback members in the length of the wall form. It can be appreciated that the overlap arrangement will provide effective support along the entire length of the wall form and this overlap may only be of a very short duration if strongbacks are placed in aligned end-to-end relationship and thus, the overlap member only provides direct support at the area of the junction.
BRIEF DESCRIPTION OF THE DRAWINGS
Preferred embodiments of the invention are shown in the drawings, wherein:
Figure 1 a top view partially showing a wall forming structure;
Figures 2 and 3 are a top view of panels used in forming the wall forming structure;
Figure 4 is an elevation of a panel of the wall form;
~H-8843/CA
Figure 5 is a rear elevation of an assembled wall form;
Figure 6 is a sectional view of the strongbacki Figure 7 is a sectional view of a modified tie plate;
Figure 8 is a partial side view showing attachment of strongbacks to the wall form;
Figure 9 is a partial elevation showing attachment of the strongbacks to the wall form; and Figure 10 is a sectional view showing a strongback and a modified tie plate in a cooperating configuration.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Wall forms, as generally shown in Figure 1, have been used for forming of concrete walls. The wall forms include opposed walls 4 which are appropriately supported therebehind and are typically tied together by tie bars 14 which engage the rear support structure of each opposed wall. The wall form of the present invention distinguishes over the prior art due to the particular cooperation of the strongback with the upright members and the cooperation of the strongback with the tie plate as well as the improved structure of the strongback and a particular structure of a modified tie plate for high load applications.
The wall form 2 having the opposed walls 4 have sheeting material 6, which is typically of a plywood or other suitable material, which limits the concrete and has the exterior surface of the final concrete wall produced by abutment with the sheeting material. The sheeting material is supported by uprights 8, which are typically of an I-beam construction and typically have a bolt slot 9 on the exterior surface thereof. Strongbacks 10 run horizontally and serve to connect the different panels and maintain them in an assembled condition. Individual panels are used to form the wall form structure 2 and two such panels are shown in Figures 2 and 3. Each panel is generally indicated as 18, but it can be seen that they are of different horizontal widths. The panels are typically placed in side by side abutting orientation to define one of the opposed walls 4 and are maintained in this position by connecting of the strongbacks 10 therebehind. Tie bars extend through the wall form structure, generally perpendicular to the opposed walls, and a tension force is placed on the tie bars through tie plates 12 which slide over the tie bars and a suitable mechanical arrangement, such as a bolt for engaging the tie bar and applying pressure to the tie plate. The tie plate is at least partially supported by the strongbacks 10.
The generally flat tie plate 12 of Figure 8 can be used with a single strongback, as shown in Figure 8a. Each tie plate 12 includes a tab projection 64 which is received in slot 48. Lip 50 partially closes the slot and overlaps with tab projection 64 to maintain the tie plate in a generally perpendicular orientation relative to the strongback when loaded by the tension force of the tie bar.
Therefore, the slot and lip arrangement of the strongback cooperate with the stub flange 48 of the tie plate to offset the tendency of the tie plate to rotate about the edge of the strongback adjacent the tie bar. The arrangement is suitable for many applications of forming structures and is also suitable when overlapping strongbacks are used, as shown in Figure 8.
As shown in Figure 5 and Figures 8 and 9, a wedge clamp 26 is mechanically fastened by a bolt arrangement 28 (preferably a bolt and wing nut as shown in Figure 8) to an upright 8 by means of the bolt slot 9. The wedge clamp 26 defines a slot 27 between the upright and the wedge clamp.
The strongback 10 includes flange 40 and opposed flange 42 separated by a web or base member 44. The flanges are generally perpendicular to the base 44 and extend to one side of the base. Flange 42 is of a wedge shape and is adapted to be received snuggly within the slot 27 defined between the wedge clamp 26 and an upright 8.
The opposite flange 40 on the exterior surface 46 includes a slot 48 which is partially closed at a lower edge by the lip 50. Figure 8 illustrates how the tie plate 12, which in this case is generally a planar tie plate, can cooperate with an overlapping strongback lOa and engage the exterior surface thereof by contacting, with the projecting stub flange 52, the lip 50 of both overlapping strongbacks. the tie bar 14 passes between the overlapping strongbacks and passes through a port in the tie plate 12. Tension is applied by the bolt 15 being fastened to the tie bar. This assembled overlapping relationship is shown in the partial elevation of Figure 9.
A modified tie plate and cooperating strongback are shown in Figure 10. In this case, the modified tie plate 60 has a plate member 61 which generally is planar and similar to the tie plate shown in Figure 8. A port 62 is provided in plate 61 for allowing the tie bar to pass therethrough. The plate has been modified by including a perpendicular web 66 which terminates in an outwardly extending foot flange 68 generally perpendicular to the web 66. In addition, in the web 66, a further tie bar receiving port 70 is provided. This port can be used for allowing the tie plate to orientate the web 66 to overlap the outer ends of overlapping strongbacks, as would be the case as generally shown in Figure 8. In the case where the strongbacks are not overlapping and a tie plate is used, the modified tie plate cooperates with the strongback in the manner as shown in Figure 10. In this case, the strongback 10 can initially support the tie bar plate due to the tab projection 64 being received in the slot 48 and maintained therein due to the lip 50. As pressure is applied to plate member 61 when the tie bar is placed in tension, the web 66 will be drawn against the tie bar, and therefore, the tie bar will provide partial support to limit the distortion of the tie plate. This modified tie plate is useful in high load applications.
The strongback 10, the modified tie plate 60 and the more typical tie plate 12 can all be made of an aluminum alloy such as those alloys now typically used in construction. It is also apparent that it can be made of other suitable materials and are not limited to this ~H-8843/CA
particular aluminum alloy. Extrusion allows the parts to be manufactured relatively inexpensively and the strongbacks require no additional manufacturing steps after extrusion, whereas the modified tie plate 60 and the tie plate 12 merely require suitable porting to allow reception of a tie bar therethrough.
Although various preferred embodiments of the present invention have been described herein in detail, it will be appreciated by those skilled in the art, that variations may be made thereto without departing from the spirit of the invention or the scope of the appended claims.
Claims (10)
1. A wall form arrangement for use in forming concrete walls comprising sheeting material forming a concrete engaging surface supported therebehind by upright structural members to form individual panels which are adapted to cooperate with like panels to form said wall form, said wall form arrangement including strongbacks which provide horizontal support to the exterior of said upright structural members, said strongbacks also engaging tie plates associated with tie bars which pass generally perpendicularly through said panels, each strongback being of a channel cross section defined by a base with opposed flanges generally perpendicular to said base and being located to one side of said base, one flange of said strongback cooperating with said tie plates to engage an outer edge of the tie plate in a manner to oppose rotation of said tie plate about a junction of said one flange and said base and to maintain the tie plate relative to said one flange when said tie plate is maintaining an axial tie bar load exerted thereon by a tie bar in engagement therewith.
2. A strongback comprising an extruded member of a channel cross section defined by a base with opposed flanges extending from opposite ends of said base and to one side of said base, one of said flanges including a slot arrangement by means of which a tie plate may be initially supported from said strongback.
3. A strongback as claimed in claim 2 wherein said slot arrangement is outwardly opening and is provided in an exterior surface of said one flange which exterior surface is generally planar and generally perpendicular to said base.
4. A strongback as claimed in claim 2 wherein the flange opposite said one flange has a planar exterior surface generally perpendicular to said base and said flange tapers from said base to a free end of said flange.
5. A strongback as claimed in claim 3 wherein the flange opposite said one flange has a planar exterior surface generally perpendicular to said base and said flange tapers from said base to a free end of said flange.
6. A strongback as claimed in claim 4 made of an aluminum based alloy.
7. A strongback as claimed in claim 6 wherein said slot has a lip portion restricting the opening of said slot which lip portion extends towards said base.
8. In a concrete wall forming structure, a tie plate comprising a generally planar plate member with a locating tab inwardly offset at one end thereof and a perpendicularly extending support web at an opposite end of said plate member to thereby define a generally 'L' shaped section, said support web being of a length at least substantially equal to the length of said plate member and said plate member includes a port therethrough for a tie bar to pass through.
9. In a concrete wall forming structure as claimed in claim 8 wherein said support web includes a port for receiving a tie bar generally perpendicular to said support web.
10. In a concrete wall forming structure as claimed in claim 9 wherein said support web includes an outwardly extending support foot generally perpendicular to said support web.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2110342 CA2110342C (en) | 1993-11-30 | 1993-11-30 | Wall form support system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2110342 CA2110342C (en) | 1993-11-30 | 1993-11-30 | Wall form support system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2110342A1 CA2110342A1 (en) | 1995-05-31 |
| CA2110342C true CA2110342C (en) | 1998-02-10 |
Family
ID=4152552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2110342 Expired - Fee Related CA2110342C (en) | 1993-11-30 | 1993-11-30 | Wall form support system |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2110342C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10975585B2 (en) | 2018-10-15 | 2021-04-13 | Peri Formwork Systems, Inc. | Connection assembly for formwork |
| CN111236627B (en) * | 2020-01-16 | 2024-07-16 | 浙江省一建建设集团有限公司 | High wall body concrete one-time pouring molding template |
| US12031340B1 (en) | 2022-01-03 | 2024-07-09 | Peri Formwork Systems, Inc. | Support waler and method of striking formwork |
-
1993
- 1993-11-30 CA CA 2110342 patent/CA2110342C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2110342A1 (en) | 1995-05-31 |
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| EEER | Examination request | ||
| MKLA | Lapsed |