CA2085536A1 - Interconnecting edge beams for concrete forming panels - Google Patents
Interconnecting edge beams for concrete forming panelsInfo
- Publication number
- CA2085536A1 CA2085536A1 CA002085536A CA2085536A CA2085536A1 CA 2085536 A1 CA2085536 A1 CA 2085536A1 CA 002085536 A CA002085536 A CA 002085536A CA 2085536 A CA2085536 A CA 2085536A CA 2085536 A1 CA2085536 A1 CA 2085536A1
- Authority
- CA
- Canada
- Prior art keywords
- male
- members
- beam member
- female
- panel
- 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.)
- Abandoned
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
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
- E04G11/38—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings for plane ceilings of concrete
-
- 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
- E04G11/087—Fill-in form panels in the plane of two adjacent forms
-
- 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
- E04G17/001—Corner fastening or connecting means for forming or stiffening 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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/04—Connecting or fastening means for metallic forming or stiffening elements, e.g. for connecting metallic elements to non-metallic elements
- E04G17/042—Connecting or fastening means for metallic forming or stiffening elements, e.g. for connecting metallic elements to non-metallic elements being tensioned by threaded 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
- E04G9/00—Forming or shuttering elements for general use
- E04G9/02—Forming boards or similar 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
- E04G9/00—Forming or shuttering elements for general use
- E04G9/02—Forming boards or similar elements
- E04G9/04—Forming boards or similar elements the form surface being of wood
-
- 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
- E04G9/00—Forming or shuttering elements for general use
- E04G9/02—Forming boards or similar elements
- E04G2009/023—Forming boards or similar elements with edge protection
- E04G2009/025—Forming boards or similar elements with edge protection by a flange of the board's frame
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
ABSTRACT
There is disclosed an assembly of interconnecting edge beams for concrete sheathing panels. The assembly includes a male beam member and a female beam member. The members are elongate and each have a panel support for attachment to the edge of a sheathing panel placed thereon. The members also each provide an abutment surface and a coupling mechanism for mating engagement of the male beam member with an adjacent female beam member, such that when the members are disposed in mating engagement, they present a substantially planar and continuous concrete forming surface made up of the sheathing panels. Preferably, the coupling mechanism includes a laterally extending rib provided on the male beam member at the abutment surface thereof.
There is disclosed an assembly of interconnecting edge beams for concrete sheathing panels. The assembly includes a male beam member and a female beam member. The members are elongate and each have a panel support for attachment to the edge of a sheathing panel placed thereon. The members also each provide an abutment surface and a coupling mechanism for mating engagement of the male beam member with an adjacent female beam member, such that when the members are disposed in mating engagement, they present a substantially planar and continuous concrete forming surface made up of the sheathing panels. Preferably, the coupling mechanism includes a laterally extending rib provided on the male beam member at the abutment surface thereof.
Description
2 ~ 3 ~
IMTERCOMNECTING EDGE BEAMS FOR CQNCRETE FORMING PANELS
FIELD OF THE INVENTION
The present invention relates generally to the field of concrete forming and more particularly, to an assembly of interconnecting edge beams for concrete sheathing panels.
BACKGROUND OF THE INVENTION
Heretofore, it has been known in the field of building construction and concrete forming to use sheathing panels, commonly plywood panels to which a re:Lease agent has been applied, in order to provide a mould surface for the pouring and setting of concrete floor slabs.
In the known concrete forming arrangements, the plywood panels are supported by a plurality of joist mernbers. As is well-known to those skilled in this art, the joist members have their upper ends adapted to receive elongate wooden inserts in press-fit engagement therewith. When one or more of the plywood sheathing panels are placed atop thèse supporting joist members, a suitable number of nails or other like fasteners may be driven through the sheathing panels and into the wooden inserts held by the joist beams. ~ ~~
The joist beams of the known concrete forming arrangements are in turn supported by a plurality of transversely disposed ledger beams in a spaced apart arrangement, the joist members being placed thereacross. These ledger beams of the assem~ly are then supported or shored by means of a scaffolding assembly.
It is also known in the art to employ concrete forming structures in a so-called "flying form" configuration. These flying form structures are utilized typically in the pouring of concrete floor slabs, such that when the poured wet concrete which is supported by the scaffolding assembly during its curing phase has sufficiently set, the entire scaffolding assembly may be moved as a substantially integral unit and hoisted or "10wn" above a newly cured first floor slab in order to support the pouring of a ~ 208~3~
second floor slab located above the first. When the known concrete forming structures and techniques are to be adapted for use as a flying form, all of the various components of a forming structure must be securely connected the one to the other so as to permit the structure to be transported as an integral unit as described above.
Prior to the advent of joist members which provide receiving means for wooden inserts in contact with the sheathing panels supported thereby, it was more common to use a combination of both wooden and metal structural supporting members for the panels, which would in turn be shored by an arrangement of height-adjustable posts or any other suitable scaffolding means.
There are a number of problems and inconveniences associated with these known concrete forming assemblies and techni~ues. By way of example, the known concrete forming assemblies and techniques require a considerable degree of labcur time in order to assemble and disassemble a particular concrete forming structure. This is because a number of joist members bearing wooden inserts must first be set out in a desired arrangement, following which a plurality of concrete sheathing panels must then be cut to size and then nailed into each of these supporting hybrid joists. The same inconveniences of assembly hold for more conventional concrete forming systems which do not employ the hybrid joists but use conventional wooden joists in their stead.
In addition to the foregoing disadvantages, it is ~uite common in the concrete forming field to reuse the plywood sheathing panels of a forming assembly for sake of economy. When this is done, the plywood sheathing panels must be detached from the supporting members to which they are nailed, and repeated fastening and detachment of panels in this manner tends to lead to their deterioration. As well, the plywood panels may become worn or damaged, especially at the edges thereof, when they are handled (or mishandled) on the construction site, and the same may occur during their transport and storage.
Yet another inconvenience and disadvantage of the known i~ 2 ~ 8 ~ 6 concrete forming assemblies is that some of their constituent components, such as panels, joist beams or ledger beams, can be ~uite cumbersome and/or heavy for lifting and manipulation without the use of a crane, or may require a nurnber oE workpersons in order to safely handle the components.
It is therefore an object of the present invention to provide an assembly of interconnecting edge beams for concrete sheathing panels, which allows for standard-sized panels of an interlocking nature to be used on the construction site. This will largely reduce the need to cut custom sheathing panels to size and subsequently fasten and then detach these to an underlying support structure composed of joist members.
It is another object of the present invention to provide an assembly of interconnecting edge beams for concrete sheathing panels which are disposed along the entire periphery of a sheathing panel, thereby providing a measure of protection against damage to the panels if they are dropped or otherwise mishandled on the construction site.
It is yet a further object of the present invention to 2Q provide an assembly of interconnecting edge beams for concrete sheathing panels, wherein the said beams are amenable to manufacture by extrusion from relatively strong yet lightwei-ght aluminum alloys. This will permit the provision of prefabricated interconnecting panel and edge beam as-semblies in the form of a panel-bearing frame, which may be handled if desired by one or two workpersons without the strict necessity of a crane or other hoisting device.
It is a still further object of the present invention to provide an assembly of interconnecting edge beams for concrete sheathing panels, whereby prefabricated sheathing panel and edge beam assemblies allow for relatively convenient and timely assembly and disassembly of a concrete forming structure for floor slabs.
It is a still further object of the present invention to provide an assembly of interconnecting edge beams for concrete sheathing panels which is suitable for use with flying form ~-~ 2 ~ 6 2~271-15 structures.
These and other objects and advantages of the present invention will be apparent Erom the followlng detailed description of the invention and the preferred embodiments thereof.
SUMMARY OF THE INVENTION
The present invention provides an assembly of interconnecting edge beams for concrete sheathing panels, the said assembly comprising: a male beam member and a female beam member, said members being elongate and each providing panel support means for supporting an edge of a sheathing panel placed thereon, the members further each providing an abutment surface and coupling means for mating engagement of the male beam member with an adjacent female beam member, and whereby said male and female beam members, when disposed in mating engagement, present a substantially planar and continuous concrete forming surface comprised of said sheathing panels.
In preferred embodiments of the present invention, the coupling means for the interconnecting edge beams comprises a laterally extending rib provided on the male beam member at the abutment surface thereof. The coupling means further comprises a corresponding receiving means provided on the female beam member, at the abutment surface thereof, for engagement with the rib of the male beam member. This rib preferably provides an upwardly j open groove therein and the receiving means of the female beam membe~ comprises a downwardly depending lip to fit into the groove. In order to assist in guiding the lip of the receiving means of the female bearn member into and out of the groove in the I rib of the male beam member, the rib preferably has a beaded ;l 30 leading edge. The laterally extending rib of the male beam member and the corresponding receiving means of the female beam member preferably extend the entire longitudinal lengths of the members.
The abutment surfaces of each of the said male and female beam members according to the present invention is preferably provided on a vertically disposed web of said members.
As well, the panel support means on each of the male and female .~ :
l 4 .~
~,!
~;
IMTERCOMNECTING EDGE BEAMS FOR CQNCRETE FORMING PANELS
FIELD OF THE INVENTION
The present invention relates generally to the field of concrete forming and more particularly, to an assembly of interconnecting edge beams for concrete sheathing panels.
BACKGROUND OF THE INVENTION
Heretofore, it has been known in the field of building construction and concrete forming to use sheathing panels, commonly plywood panels to which a re:Lease agent has been applied, in order to provide a mould surface for the pouring and setting of concrete floor slabs.
In the known concrete forming arrangements, the plywood panels are supported by a plurality of joist mernbers. As is well-known to those skilled in this art, the joist members have their upper ends adapted to receive elongate wooden inserts in press-fit engagement therewith. When one or more of the plywood sheathing panels are placed atop thèse supporting joist members, a suitable number of nails or other like fasteners may be driven through the sheathing panels and into the wooden inserts held by the joist beams. ~ ~~
The joist beams of the known concrete forming arrangements are in turn supported by a plurality of transversely disposed ledger beams in a spaced apart arrangement, the joist members being placed thereacross. These ledger beams of the assem~ly are then supported or shored by means of a scaffolding assembly.
It is also known in the art to employ concrete forming structures in a so-called "flying form" configuration. These flying form structures are utilized typically in the pouring of concrete floor slabs, such that when the poured wet concrete which is supported by the scaffolding assembly during its curing phase has sufficiently set, the entire scaffolding assembly may be moved as a substantially integral unit and hoisted or "10wn" above a newly cured first floor slab in order to support the pouring of a ~ 208~3~
second floor slab located above the first. When the known concrete forming structures and techniques are to be adapted for use as a flying form, all of the various components of a forming structure must be securely connected the one to the other so as to permit the structure to be transported as an integral unit as described above.
Prior to the advent of joist members which provide receiving means for wooden inserts in contact with the sheathing panels supported thereby, it was more common to use a combination of both wooden and metal structural supporting members for the panels, which would in turn be shored by an arrangement of height-adjustable posts or any other suitable scaffolding means.
There are a number of problems and inconveniences associated with these known concrete forming assemblies and techni~ues. By way of example, the known concrete forming assemblies and techniques require a considerable degree of labcur time in order to assemble and disassemble a particular concrete forming structure. This is because a number of joist members bearing wooden inserts must first be set out in a desired arrangement, following which a plurality of concrete sheathing panels must then be cut to size and then nailed into each of these supporting hybrid joists. The same inconveniences of assembly hold for more conventional concrete forming systems which do not employ the hybrid joists but use conventional wooden joists in their stead.
In addition to the foregoing disadvantages, it is ~uite common in the concrete forming field to reuse the plywood sheathing panels of a forming assembly for sake of economy. When this is done, the plywood sheathing panels must be detached from the supporting members to which they are nailed, and repeated fastening and detachment of panels in this manner tends to lead to their deterioration. As well, the plywood panels may become worn or damaged, especially at the edges thereof, when they are handled (or mishandled) on the construction site, and the same may occur during their transport and storage.
Yet another inconvenience and disadvantage of the known i~ 2 ~ 8 ~ 6 concrete forming assemblies is that some of their constituent components, such as panels, joist beams or ledger beams, can be ~uite cumbersome and/or heavy for lifting and manipulation without the use of a crane, or may require a nurnber oE workpersons in order to safely handle the components.
It is therefore an object of the present invention to provide an assembly of interconnecting edge beams for concrete sheathing panels, which allows for standard-sized panels of an interlocking nature to be used on the construction site. This will largely reduce the need to cut custom sheathing panels to size and subsequently fasten and then detach these to an underlying support structure composed of joist members.
It is another object of the present invention to provide an assembly of interconnecting edge beams for concrete sheathing panels which are disposed along the entire periphery of a sheathing panel, thereby providing a measure of protection against damage to the panels if they are dropped or otherwise mishandled on the construction site.
It is yet a further object of the present invention to 2Q provide an assembly of interconnecting edge beams for concrete sheathing panels, wherein the said beams are amenable to manufacture by extrusion from relatively strong yet lightwei-ght aluminum alloys. This will permit the provision of prefabricated interconnecting panel and edge beam as-semblies in the form of a panel-bearing frame, which may be handled if desired by one or two workpersons without the strict necessity of a crane or other hoisting device.
It is a still further object of the present invention to provide an assembly of interconnecting edge beams for concrete sheathing panels, whereby prefabricated sheathing panel and edge beam assemblies allow for relatively convenient and timely assembly and disassembly of a concrete forming structure for floor slabs.
It is a still further object of the present invention to provide an assembly of interconnecting edge beams for concrete sheathing panels which is suitable for use with flying form ~-~ 2 ~ 6 2~271-15 structures.
These and other objects and advantages of the present invention will be apparent Erom the followlng detailed description of the invention and the preferred embodiments thereof.
SUMMARY OF THE INVENTION
The present invention provides an assembly of interconnecting edge beams for concrete sheathing panels, the said assembly comprising: a male beam member and a female beam member, said members being elongate and each providing panel support means for supporting an edge of a sheathing panel placed thereon, the members further each providing an abutment surface and coupling means for mating engagement of the male beam member with an adjacent female beam member, and whereby said male and female beam members, when disposed in mating engagement, present a substantially planar and continuous concrete forming surface comprised of said sheathing panels.
In preferred embodiments of the present invention, the coupling means for the interconnecting edge beams comprises a laterally extending rib provided on the male beam member at the abutment surface thereof. The coupling means further comprises a corresponding receiving means provided on the female beam member, at the abutment surface thereof, for engagement with the rib of the male beam member. This rib preferably provides an upwardly j open groove therein and the receiving means of the female beam membe~ comprises a downwardly depending lip to fit into the groove. In order to assist in guiding the lip of the receiving means of the female bearn member into and out of the groove in the I rib of the male beam member, the rib preferably has a beaded ;l 30 leading edge. The laterally extending rib of the male beam member and the corresponding receiving means of the female beam member preferably extend the entire longitudinal lengths of the members.
The abutment surfaces of each of the said male and female beam members according to the present invention is preferably provided on a vertically disposed web of said members.
As well, the panel support means on each of the male and female .~ :
l 4 .~
~,!
~;
3 ~3 beam members is a laterally extending ledge on the web. The ledge is disposed adjacent an upper terminal end of the web and on a side of each of the beam members opposite that of the abutment surfaces and coupling means thereof.
The male and female beam members according to the present invention also preferably provide a laterally extending flange on their web portions adjacent the lower terminal ends thereof. The laterally extending flange is disposed on the side of each of the beam members opposite the abutment surfaces and coupling means thereof. q'he flange presents a substantially planar surEace for placement of the beam members onto a support surface therefor.
At least one of the male and female beam members of the assembly according to the present invention is preferably provided with a substantially T-shaped and outwardly open channel therein adjacent the laterally extending flange thereof. This channel is intended for retaining the head of a bolt fastener while allowing the shank thereof to extend outwardly therefrom. This allows the interconnecting edge beams to be secured to a ledger beam or other support surface by means of a fastening plate or the like, well-known to those skilled in this--art~
It is also preferable that at least two-of the laterally extending ribs described above are provided on the male beam member and at least two corresponding-receiving means therefor are provided on the female beam member.
The beam members of the assembly according to the present invention are preferably all integrally formed from extruded metal stock, such as from a structurally suitable aluminum alloy.
BRIEF DESCRIPTION OF THE DRAWINGS
For purposes of illustration but not of limitation, preferred embodiments of the present invention are described hereinbelow with re:Eerence to the following drawings in which:
FIGURE 1 is a partial perspective and exploded view illustrating a typical prior art configuration of a ledger beam 8 ~
and transverse joi.~ts placed thereon for supporting a plywood sheathing panel onto which a concrete floor slab is to be poured, there being further illustrated a post member of a scaffolding assembly used to shore the ledger beam;
FIGURE 2 is a partially sectioned overall perspective view of a plurality of sheathing panels being connected the one to the other by means of the interconnecting edge beams according to the present invention, the panels being set down on a plurality of spaced apart ledger beams supported by a suitable scaffolding arrangement therefor;
FIGURE 3 iS a perspective view of a male and female beam member according to the interconnecting edge beam assembly of the present invention, further showing a stepped panel securing plate for attachment to a plywood sheathing panel;
FIGURE 4 is a cross-sectional view of the male and female beam members of FIGURE 3, showing the stepped panel securing member on each of the beams being affixed to a respective sheathing panel therefor;
FIGURE 5 iS another cross-sectional view of the male and female beam members of FIGS. 3 and 4, showing the engagement of the two members and their respective attachment by -alternative means to two plywood sheathing panels;
FIGURE 6 is a partly sectioned and partly exploded view of a single sheathing panel together wi-th a panel--bearing frame comprised of interconnecting edge beams according to the present invention; :
FIGURE 7 is a detailed sectioned perspective view of an inside corner portion of the edge beam frame of FIGURE 6, showing the use of upper and lower corner connecting brackets for the two :~
abutting edge beams;
FIGURES 8a and 8b are, respectively, a top plan view of the bottom corner connecting bracket of FIG. 7 and a side elevational view thereof;
FIGURES 9a and 9b are, respectively, a top plan view of the upper corner connecting bracket of FIG. 7 and a side elevational view thereof;
~ 2 ~ 3 6 FIGURE 10 ls a detailed and exploded top plan view showing the respective corners of four adjacently disposed panel-bearing frames according to FIG. 6, positioned for mating engagement;
FIGURE 11 is another detailed top plan view of the frames of FIG. 10, which illustrates the interconnection and abutment of the corners of the frames;
FIGURE 12 is a sectioned perspective view showing the connection sequence of four of the panel-bearing frames according to FIG. 6;
FIGURE 13 is a partially sectioned and partially exploded perspective view of a number oE adjacent and interconnected edge beam frames of FIG. 6, set down across two spaced apart supporting ledger beams therefor;
FIGURE 14 is a cross-sectional view of a male and female beam member of two adjacent panel-bearing edge beam frames set down onto a ledger beam, taken along line 14-14 of FIG. 13;
FIGURE 15 is a cross-sectional view taken along line 15-15 of FIG. 14, showing further details of interconnection of the adjacent edge beam frames;
FIGURE 16 is a detailed-partial perspect-lv-e and exploded view showing the iower portion of a male beam member having a bolt retaining channel therein for the fastening of an engagement clip for connection of the edge beam to a iedger;
FIGURE 17 is a perspective view of a number of interconnected edge beam frames with sheathing panels, illustrating how the panel-bearing frames are disposed in the vicinity of commonly encountered obstacles, namely a row of concrete support columns; and FIGURE 18 is a detailed perspective view of edge beams and panel members, showing how a gap between two ~ones of interconnected panel-bearing frames may be spanned by a plywood sheathing panel supported by conventional means.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
A typical prior art arrangement of structural members 20~ 3~
for supporting the sheathing panels of concrete formwork for the pouring of floor slabs is shown in FIGURE 1. A series of joists members 1 is placed in a transverse arrangement onto a supporting ledger beam 3, which is well-known to those skilled in this art.
The ledger beam 3 is in turn supported by a suitable number of post members 5 which form part of a scaffolding system suitable for shoring the entire arrangement. The joist members 1 may be secured to the ledger beam 3 by means oE a stepped connecting plate 7 held in place by a nut 9 and bolt fastener 10. The head of bolt fastener 10 is retained in a bolt retaining channel 12 extending the entire longitudinal length of the ledger beam 3 at its upper terminal end. The channel 12 retains the bolt 10 while allowing the shank thereof to extend upwardly therefrom. By tightening the nut 9, the stepped connecting plate is urged downwardly against lower flange 2 of the joist 1, thereby securing it in place if the formwork is to be used as a flying form structure.
The upper terminal ends of the joist members 1 are provided with a receiving channel 14, into which an elongate - 20 wooden insert 16 may be held in press-fit engagement therewith.
The wooden inserts 16 contact the^underside of-a wooden sheathing panel 18 which is placed atop the joist members 1. The sheathing panel is typically a plywood sheet or the like, and is affixed to the wooden insert 16 by means of nails or other like fasteners driven through the top surface of the panel.
In contrast to the prior art arrangement for concrete formwork intended for the pouring of floor slabs, there is shown in FIG. 2 an exemplary formwork structure according to the present invention. The arrangement consists of a plurality of ledger beams 3 disposed in a substantially parallel and spaced apart relationship. These ledger beams 3 are supported by a plurality of post members 5 which are interconnected by a plurality of bracing members 6. Such a scaffolding arrangement is described in greater detail in my co-pending United States application serial No. 07/731,275 filed on July 17, 1991 and entitled MODULAR
SCAFFOLDING ASSEMBLY. Any other structurally suitable system of 3 ~
scaEfolding or shoring may be used with the present invention, as those persons skilled in this art will readily appreciate.
The scaffolding arrangement thus far described may be employed equally well to support the known concrete forming arrangement of joists and sheathing panels described above. What is different from the prior art systems and is provided by the present invention is that the mould surface in contact with the poured concrete is formed by a series of interconnecting panel-bearing frames 20 to each of which is secured a sheathing panel 22. As will be described in greater detail hereinbelow, each frame and sheathing panel assembly is advantageously capable of being prefabricated to any desired dimensions. As shown in FIG.
2, each of the panel frames 20 preferably should be supported by at least two ledger beams 3, so that the lengths of one parallel pair of the edge beams 21 thereof should be made to roughly correspond with the centre-to-centre distance between two adjacent and spaced apart ledger beams 3.
Each of the panel frames 20 is composed of four interconnecting edge beams 21, connected the one to the other in a rectangular configuration. The details of the structure and mating engagement-of the interconnecting edge beams 21 according to the present invention are described more fully below.
Referring now to FIGS. 3 to 6, each of the panel frames 20 comprises two female beam mernbers 21F and two male beam members 21M. As shown, each pair of the parallel sides of the panel-bearing frame comprises one male beam member 21M and one female beam member 21F. Thus, two identical beam members 21 are not to be disposed in the frame 20 so as to be located in a spaced apart parallel relationship.
Each of the male and female bearn members 21M,21E are elongate, and each respectively provides a panel support means consisting of laterally e~tending ledges 23,24. The ledges 23,24 are respectively disposed on the webs 25,26 of the panels. These ledges are located on the sides of the webs 25,26 which are opposite the respective abutment surfaces 43,44 of the male and female edge beam mernbers 21.
~ ~ 0 8 ~ .~ 3 ~
A stepped panel securing plate 28, which may be secured to a wooden sheathing panel 22 by means of a screw fastener 30 or the llke, may be employed to affix the sheathing panel to the beam members 21. The screw fastener 30 is introduced through aperture 29 in the upper surface 31 of plate 28. The lower surface 32 of plate 28 bears against the underside of the ledges 23 or 24, as shown in FIG. 4. In this manner, a sheathing panel 22 is first placed onto the ledges 23,24 and held permanently in position thereon by a plurality of securing plates 28. rrhose skilled in this art will understand that a suitable number of such securing plates 28 should be provided along the ledge portions 23,24 of the male and female beam members 21M and 21F, so as to securely hold the panel in place.
As an alternative to the stepped panel securing plate 28, the sheathing panels 22 may be held in place onto the ledges 23,24 of the edge beams by means of screw fasteners 34 introduced through apertures (not shown) provided through the panel support ledges 23,2~.
As best shown in FIGURES 4 and 5, the upper surface of sheathing panels 22, which constitutes the mould surface during concrete pouring,~is substantially flush with the upper leading ledges of web extensions 35,36 of the male and female beam members 21M and 21F. This ensures that when the edge beam members 21 are connected the one to the other, a substantially planar and continuous concrete forming surface results.
Each of the male and female edge beam members 21M,21F
further provides a laterally extending flange 37,38 on the respective web portions 25,26 of the beams. The flanges 37,38 are located on the webs 25,26 adjacent the lower terminal ends thereof and on the same side of each of the beam members 21M,21F on which the panel support ledges 23,24 are located. The flanges 37,38 each present a substantially planar lower surface which allows for secure placement of the beam members onto a support surface therefor, such as a ledger beam 3.
At least one of the rnale and female beam mernbers 21M and 21F, preferably the male member 21M, provides a substantially T-2~,.Y~3~' 2827~-15 shaped and outwardly open channel 40 therein. The channel 40 is adjacent the laterally extending flange 37 of the male beam member 21M and is adapted Eor retaining the head of a bolt fastener 42 or the like while allowing the shank thereof to extend outwardly therefrom (FIG. 5). Preferably, the channel 40 extends the entire longitudinal length of the male edge beam member 21M.
For convenience, the leading edges of the flanges 37,38 may be provided with longitudinal beads 41,42 (FIGS. 4 and 5).
This allows for the flanges to be clamped or otherwise affixed to a support surface with greater security, since the beads 41,42 can be used to prevent relative movement of the beam members 21 in a direction transverse to the longitudinal direction of the beads.
The mating engagement of the male and female edge beam members 21M and 21F is accomplished as follows, and is best illustrated in FIGS. 4 and 5. Planar abutment surfaces 43,44 are respectively provided on the webs 25,26 of the male and female edge beams 21M,21F'. The coupling means for the beams 21 preferably comprises two laterally extending ribs 46 provided on the male beam member 21M at the abutment surface 43 thereof in a vertically spaced apart configuration. The coupling means for the beam members furt~er comprises two corresponding receiving means 48 provided on the female beam member 21F at the abutment surface 44 thereof for engagement-wi-th the ri-bs 46 of the male beam member.
Preferably, the ribs 46 provide an upwardly open groove 50 therein. The corresponding receiving means 48 of the female beam member comprises a downwardly depending lip 52 to fit into the groove 50. Each of the laterally extending ribs 50 of the male beam member 21M and each of the corresponding receiving means 48 of the female beam member 21F preferably extend the entire longitudinal lengths of the members.
The laterally extending ribs 46 of the male beam members 21M preferably are provided with a beaded leading edge 54 (FIG. 4) to assist in guiding the lip 52 of the female beam member 21F into and out of the groove 50 in the rib 46 during engagement and disengagement of the male and female beam members. Whe~ these ~,~g~ 3 ~
members are disposed in mating engagement, they present a substantially planar concrete forming surEace comprised of the sheathing panels 22 retained on the panel support ledges 23,24 of the members.
Turning now to FIGURES 7 to 9, there is shown the use of an upper corner connecting bracket 56 and a lower corner connecting bracket 58 for connecting the abutting corner portions of two edge beams of a panel-bearing frame 20. In the speciEic case of FIG. 7, two male members 21M are illustrated in an abutting configuration.
The lower corner connecting bracket 58 has a generally L-shaped planar configuration and is contoured to mate with the two transversely disposed and abutting flanges 37 of the adjacent male beam members 21M. Thus, the lower connecting bracket has an upwardly extending wall portion 60 adjacent one edge thereof for intimate contact with the vertical faces 62 adjacent the bottom flanges 37 of the male members. As well, connecting bracket 58 also provides a rounded L-shaped groove 64 along the underside thereof. The groove 64 engages with the beads 41 provided on the respective bottom flanges 37 o~ the male beam members 21M.
, In order to secure two abutting edge beams 21 of the ; panel bearing frame 20 together by means of the lower corner connecting bracket 58, a plurality o~ s-crew fasteners 66 are introduced through corresponding apertures 68 therefor disposed in the wall portion 60 of bracket 58. The screw fasteners 66 engage with the vertical faces 62 of the male edge beam members 21M.
With regard to the upper corner connecting bracket 56, this bracket is also of a substantially L-shaped planar configuration, and provides an upwardly e~tending lip portion 70 along one edge thereof. This lip 70 abuts against the leading , edges 72 of the two abutting ledges 23 of the male edge beam `, members 21M. The remainder of the upper corner connecting bracket comes into contact with the underside of the ledges 23 of the edge beam members, and a corner bracket 56 is secured to the ledges 23 by means of screw fasteners 74 or the like introduced into the ledges 23 through corresponding apertures 76 provided in the upper 2 ~ 3 ~
~8271-15 corner connecting bracket 56.
Those persons skilled in this art will readily appreciate that the same corner connecting brackets 5~,58 will be used not only at the abutting corners of two male edge beam members 21M as shown in FIGURE 7, but also for the connection of any other two edge beam members, whether the connection be between a male and female beam member, or between two female members of a panel-bearing frame 20.
With reference now to FIGURES 10 and 11, FIG. 10 illustrates how the corner portions of the various mating edge beams of the panel bearing frames 20 are to be cut during fabrication in order to ensure that the panel frames, when assembled, provide a continuous and secure corner joint of four abutting panel frames 20, as shown in FIG. 11.
Taking each of the various corners of the panel frame members 20 of FIG. 10 in turn, the panel frame member 20a consists of the convergence of two female beam members 21F. As shown, the terminal ends of the two female beam members 21F of the panel frame 20a are cut obliquely during fabrication, preferably at an angle of 45 to the longitudinal direction of the-edge beams--21F, as shown by the abutting surfaces 78.
In the case of the panel frames 20b and 20c, these illustrate the corner convergence of a male edge beam member 21M
and a female edge beam member 21F. In this type of corner ' configuration, the terminal end of the female edge beam member 21F
is again cut obliquely at a preferred angle of 45 to the longitudinal direction of the edge beam member, as shown by the abutting surface 80. ~ corresponding male edge beam member 21M of the corner configuration 20b and 20c also has an oblique 45 cut made therein at its terminal end, as shown by the abutment surface 82 thereon. Thus, the surface 82 on a male beam member 21M abuts with the surface 80 of the female beam member 21F.
In addition to the abutment surface 82 provided on the male beam member 21M of the panel frames 20b and 20c, a second oblique surface 84 is provided on the edge beam members 21M. This second oblique surface 84 is also cut during fabrication of the ,~ .
~' .
2~ 3 3~
edge beam members at a preferred angle of 45 to the longitudinal direction of the members, but this abutment surface 84 is further oriented transversely to the abutment surface 8~ of the male edge member 21M. As best shown in FIG. 10, the intersection of the two abutment surfaces 82 and 84 meet at a point 86 which lies along the vertical surface of web extensions 35,36 which is on the same side as the laterally extending ribs 46 of the male beam members 21M. By providing the second oblique surface 84 on the male beam members 21M, the extending ribs 46 thereon will properly engage with the receiving means 48 o~ an adjacent female beam member 21F, whose corner ends will also have been cut obliquely to form the abutment surfaces 78 thereon.
The panel frame 20d shows a corner configuration comprising two male members 21M. Each of these male members have their abutting ends cut to form an oblique abutment surface 88 on each of the members, as previously described. As described above for the male member 21M of the panel frame 20b, a second oblique cut 90 is analogously made at the ends of the abutting male members 21M of the panel frames 20d.
To recapitulate, then, all male edge beams members 21M
according to the present invention will have their terminal ends cut with the two transversely disposed oblique surfaces 82,84 or 88,90 as described above, and all female edge beam members 21F
according to the present invention will have a single oblique cut at the terminal ends thereof to form the abutment surfaces 78 or 80. What results when the various edge beam members are assembled into panel frames 20, and when these frames are then engaged the one to the other, is the formation of a relatively tight-fitting and secure connection exemplified by FIGURE 11.
FIGURE 12 shows the sequence of connection of the various engaging faces of panel-bearing frames 20 composed of the interconnecting edge beams of the present invention. Other sequences of engagement will readily be apparent to those persons skilled in this art, and the following description is only intended to be a particular example of the steps involved in typically setting down a plurality of panel-bearing frames 20 onto ti 3 tj their supporting ledger beams, as shown in EIGS. 13 to 16.
Thus, to form a pouring surEace in a defined rectangular perimeter, a first panel-bearing frame 20, denoted ~A~ in FIGURE
12, is set down onto its supporting ledger beams at one of the corners of the rectangular perimeter with its two male edge beam members 21M having their extending ribs 46 facing inwardly of the perimeter to be occupied by other adjoining panels. A second panel-bearing frame 20, such as the one denoted "B", may now be engaged with the frame "A" by mating one of its female edge beam 10 members 21F with that of the male edge beam member 21M of panel "A". The panel "B" must be oriented such that its male edge beam members 21M face inwardly of the desired concrete forming perimeter, where further panels are to be added to complete the formwork. A third panel, designated as panel ~C~ in FIG. 12, may then have one of its female edge beam members 21F engaging with the second male edge beam member 21M of panel "A". Once again, the panel "C" is oriented such that its male edge beam members 21M
face inwardly of the concrete forming perimeter. Finally, the panel-bearing frame 20 denoted "D" may be engaged by its two 20 female edge beam members 21F to rêspective male edge beam members 21M of the panels "B" and ~Ci~.
From the foregoing description, those skilled in this art will readily appreciate that in order to set down the panel-bearing frames 20 in mating engagement, this must be done so that the female edge beam members of each newly introduced panel engages with an available male edge beam member 21M of a panel already in place. In order to disassemble the concrete forming structure composed of the panel-bearing frames 20, the steps described above are simply reversed.
Referring next to FIGURES 13 to 16, further details of interconnection of the edge beam members which make up the panel-bearing frames 20 are shown, for a typical configuration of panel frames 20 placed onto supporting ledger beams 3 as previously described. As best shown in EIG. 16, a stepped engagement clip 92 may be used to secure the male edge beam member 21M to its supporting ledger beam 3. This engagement clip is of necessity 2 ~ 3 '~
where it is intended to use the panel-bearing frames 20 in a flying-form structure.
The clip 92 provides an aperture 94 on the upper planar surface 96 thereof through which the shank of bolt fastener 42 is introduced. The head of bolt fastener 42 is retained within the channel 40 of the male edge beam member 21M as previously described. A nut 98 is used to secure the arrangement, and when the nut is tightened onto its bolt fa,stener 42, the lower planar surface 100 of the engagement clip 92 is urged against the underside of flange 102 of the ledger beam 3. A groove 104 on the engagement clip 92 is used to receive the beaded portion 106 of flange 102. This is intended to prevent any transverse movement of the engagement clip 92 with respect to the flange 102 against which it is urged. The longitudinal movement of the engagement clip 92 is prevented by the bolt retaining channel 40 of the male edge beam member 21M.
FIGURES 17 and 18 illustrate how the interconnecting panel-bearing frames 20 of the present invention may be configured around obstacles such as a row of concrete columns 108. FIG. 17 also shows how a raised platform or frame 110, whose height is greater than the thickness of the floor slab to be poured, may be placed at any desired location onto the surface of the sheathing panels 22 so as to create an opening in the poured slab for a stairwell or the like.
In FIGURE 18, the gap in the concrete forming surface defined by the sheathing panels 22, and caused by the presence of a row of concrete columns, may be filled with appropriately sized sheathing panels 112. These sheathing panels 112 span the gap between the panel-bearing frames 20 on either side thereof. The panels 112 are in turn shored by conventional means such as a series of wooden beams 114 placed thereunder. A post member and screwjack assembly 116, which is separate from the scaffolding system used to shore the panel-bearing frames 20, may be used to support the wooden beams 114.
Those persons skilled in this art will readily appreciate that the present inventlon has been described 28271-~5 hereinabove by way of example only, and that modiEications of detail can be made to the invention, all of which would come within its spirit and scope.
The male and female beam members according to the present invention also preferably provide a laterally extending flange on their web portions adjacent the lower terminal ends thereof. The laterally extending flange is disposed on the side of each of the beam members opposite the abutment surfaces and coupling means thereof. q'he flange presents a substantially planar surEace for placement of the beam members onto a support surface therefor.
At least one of the male and female beam members of the assembly according to the present invention is preferably provided with a substantially T-shaped and outwardly open channel therein adjacent the laterally extending flange thereof. This channel is intended for retaining the head of a bolt fastener while allowing the shank thereof to extend outwardly therefrom. This allows the interconnecting edge beams to be secured to a ledger beam or other support surface by means of a fastening plate or the like, well-known to those skilled in this--art~
It is also preferable that at least two-of the laterally extending ribs described above are provided on the male beam member and at least two corresponding-receiving means therefor are provided on the female beam member.
The beam members of the assembly according to the present invention are preferably all integrally formed from extruded metal stock, such as from a structurally suitable aluminum alloy.
BRIEF DESCRIPTION OF THE DRAWINGS
For purposes of illustration but not of limitation, preferred embodiments of the present invention are described hereinbelow with re:Eerence to the following drawings in which:
FIGURE 1 is a partial perspective and exploded view illustrating a typical prior art configuration of a ledger beam 8 ~
and transverse joi.~ts placed thereon for supporting a plywood sheathing panel onto which a concrete floor slab is to be poured, there being further illustrated a post member of a scaffolding assembly used to shore the ledger beam;
FIGURE 2 is a partially sectioned overall perspective view of a plurality of sheathing panels being connected the one to the other by means of the interconnecting edge beams according to the present invention, the panels being set down on a plurality of spaced apart ledger beams supported by a suitable scaffolding arrangement therefor;
FIGURE 3 iS a perspective view of a male and female beam member according to the interconnecting edge beam assembly of the present invention, further showing a stepped panel securing plate for attachment to a plywood sheathing panel;
FIGURE 4 is a cross-sectional view of the male and female beam members of FIGURE 3, showing the stepped panel securing member on each of the beams being affixed to a respective sheathing panel therefor;
FIGURE 5 iS another cross-sectional view of the male and female beam members of FIGS. 3 and 4, showing the engagement of the two members and their respective attachment by -alternative means to two plywood sheathing panels;
FIGURE 6 is a partly sectioned and partly exploded view of a single sheathing panel together wi-th a panel--bearing frame comprised of interconnecting edge beams according to the present invention; :
FIGURE 7 is a detailed sectioned perspective view of an inside corner portion of the edge beam frame of FIGURE 6, showing the use of upper and lower corner connecting brackets for the two :~
abutting edge beams;
FIGURES 8a and 8b are, respectively, a top plan view of the bottom corner connecting bracket of FIG. 7 and a side elevational view thereof;
FIGURES 9a and 9b are, respectively, a top plan view of the upper corner connecting bracket of FIG. 7 and a side elevational view thereof;
~ 2 ~ 3 6 FIGURE 10 ls a detailed and exploded top plan view showing the respective corners of four adjacently disposed panel-bearing frames according to FIG. 6, positioned for mating engagement;
FIGURE 11 is another detailed top plan view of the frames of FIG. 10, which illustrates the interconnection and abutment of the corners of the frames;
FIGURE 12 is a sectioned perspective view showing the connection sequence of four of the panel-bearing frames according to FIG. 6;
FIGURE 13 is a partially sectioned and partially exploded perspective view of a number oE adjacent and interconnected edge beam frames of FIG. 6, set down across two spaced apart supporting ledger beams therefor;
FIGURE 14 is a cross-sectional view of a male and female beam member of two adjacent panel-bearing edge beam frames set down onto a ledger beam, taken along line 14-14 of FIG. 13;
FIGURE 15 is a cross-sectional view taken along line 15-15 of FIG. 14, showing further details of interconnection of the adjacent edge beam frames;
FIGURE 16 is a detailed-partial perspect-lv-e and exploded view showing the iower portion of a male beam member having a bolt retaining channel therein for the fastening of an engagement clip for connection of the edge beam to a iedger;
FIGURE 17 is a perspective view of a number of interconnected edge beam frames with sheathing panels, illustrating how the panel-bearing frames are disposed in the vicinity of commonly encountered obstacles, namely a row of concrete support columns; and FIGURE 18 is a detailed perspective view of edge beams and panel members, showing how a gap between two ~ones of interconnected panel-bearing frames may be spanned by a plywood sheathing panel supported by conventional means.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
A typical prior art arrangement of structural members 20~ 3~
for supporting the sheathing panels of concrete formwork for the pouring of floor slabs is shown in FIGURE 1. A series of joists members 1 is placed in a transverse arrangement onto a supporting ledger beam 3, which is well-known to those skilled in this art.
The ledger beam 3 is in turn supported by a suitable number of post members 5 which form part of a scaffolding system suitable for shoring the entire arrangement. The joist members 1 may be secured to the ledger beam 3 by means oE a stepped connecting plate 7 held in place by a nut 9 and bolt fastener 10. The head of bolt fastener 10 is retained in a bolt retaining channel 12 extending the entire longitudinal length of the ledger beam 3 at its upper terminal end. The channel 12 retains the bolt 10 while allowing the shank thereof to extend upwardly therefrom. By tightening the nut 9, the stepped connecting plate is urged downwardly against lower flange 2 of the joist 1, thereby securing it in place if the formwork is to be used as a flying form structure.
The upper terminal ends of the joist members 1 are provided with a receiving channel 14, into which an elongate - 20 wooden insert 16 may be held in press-fit engagement therewith.
The wooden inserts 16 contact the^underside of-a wooden sheathing panel 18 which is placed atop the joist members 1. The sheathing panel is typically a plywood sheet or the like, and is affixed to the wooden insert 16 by means of nails or other like fasteners driven through the top surface of the panel.
In contrast to the prior art arrangement for concrete formwork intended for the pouring of floor slabs, there is shown in FIG. 2 an exemplary formwork structure according to the present invention. The arrangement consists of a plurality of ledger beams 3 disposed in a substantially parallel and spaced apart relationship. These ledger beams 3 are supported by a plurality of post members 5 which are interconnected by a plurality of bracing members 6. Such a scaffolding arrangement is described in greater detail in my co-pending United States application serial No. 07/731,275 filed on July 17, 1991 and entitled MODULAR
SCAFFOLDING ASSEMBLY. Any other structurally suitable system of 3 ~
scaEfolding or shoring may be used with the present invention, as those persons skilled in this art will readily appreciate.
The scaffolding arrangement thus far described may be employed equally well to support the known concrete forming arrangement of joists and sheathing panels described above. What is different from the prior art systems and is provided by the present invention is that the mould surface in contact with the poured concrete is formed by a series of interconnecting panel-bearing frames 20 to each of which is secured a sheathing panel 22. As will be described in greater detail hereinbelow, each frame and sheathing panel assembly is advantageously capable of being prefabricated to any desired dimensions. As shown in FIG.
2, each of the panel frames 20 preferably should be supported by at least two ledger beams 3, so that the lengths of one parallel pair of the edge beams 21 thereof should be made to roughly correspond with the centre-to-centre distance between two adjacent and spaced apart ledger beams 3.
Each of the panel frames 20 is composed of four interconnecting edge beams 21, connected the one to the other in a rectangular configuration. The details of the structure and mating engagement-of the interconnecting edge beams 21 according to the present invention are described more fully below.
Referring now to FIGS. 3 to 6, each of the panel frames 20 comprises two female beam mernbers 21F and two male beam members 21M. As shown, each pair of the parallel sides of the panel-bearing frame comprises one male beam member 21M and one female beam member 21F. Thus, two identical beam members 21 are not to be disposed in the frame 20 so as to be located in a spaced apart parallel relationship.
Each of the male and female bearn members 21M,21E are elongate, and each respectively provides a panel support means consisting of laterally e~tending ledges 23,24. The ledges 23,24 are respectively disposed on the webs 25,26 of the panels. These ledges are located on the sides of the webs 25,26 which are opposite the respective abutment surfaces 43,44 of the male and female edge beam mernbers 21.
~ ~ 0 8 ~ .~ 3 ~
A stepped panel securing plate 28, which may be secured to a wooden sheathing panel 22 by means of a screw fastener 30 or the llke, may be employed to affix the sheathing panel to the beam members 21. The screw fastener 30 is introduced through aperture 29 in the upper surface 31 of plate 28. The lower surface 32 of plate 28 bears against the underside of the ledges 23 or 24, as shown in FIG. 4. In this manner, a sheathing panel 22 is first placed onto the ledges 23,24 and held permanently in position thereon by a plurality of securing plates 28. rrhose skilled in this art will understand that a suitable number of such securing plates 28 should be provided along the ledge portions 23,24 of the male and female beam members 21M and 21F, so as to securely hold the panel in place.
As an alternative to the stepped panel securing plate 28, the sheathing panels 22 may be held in place onto the ledges 23,24 of the edge beams by means of screw fasteners 34 introduced through apertures (not shown) provided through the panel support ledges 23,2~.
As best shown in FIGURES 4 and 5, the upper surface of sheathing panels 22, which constitutes the mould surface during concrete pouring,~is substantially flush with the upper leading ledges of web extensions 35,36 of the male and female beam members 21M and 21F. This ensures that when the edge beam members 21 are connected the one to the other, a substantially planar and continuous concrete forming surface results.
Each of the male and female edge beam members 21M,21F
further provides a laterally extending flange 37,38 on the respective web portions 25,26 of the beams. The flanges 37,38 are located on the webs 25,26 adjacent the lower terminal ends thereof and on the same side of each of the beam members 21M,21F on which the panel support ledges 23,24 are located. The flanges 37,38 each present a substantially planar lower surface which allows for secure placement of the beam members onto a support surface therefor, such as a ledger beam 3.
At least one of the rnale and female beam mernbers 21M and 21F, preferably the male member 21M, provides a substantially T-2~,.Y~3~' 2827~-15 shaped and outwardly open channel 40 therein. The channel 40 is adjacent the laterally extending flange 37 of the male beam member 21M and is adapted Eor retaining the head of a bolt fastener 42 or the like while allowing the shank thereof to extend outwardly therefrom (FIG. 5). Preferably, the channel 40 extends the entire longitudinal length of the male edge beam member 21M.
For convenience, the leading edges of the flanges 37,38 may be provided with longitudinal beads 41,42 (FIGS. 4 and 5).
This allows for the flanges to be clamped or otherwise affixed to a support surface with greater security, since the beads 41,42 can be used to prevent relative movement of the beam members 21 in a direction transverse to the longitudinal direction of the beads.
The mating engagement of the male and female edge beam members 21M and 21F is accomplished as follows, and is best illustrated in FIGS. 4 and 5. Planar abutment surfaces 43,44 are respectively provided on the webs 25,26 of the male and female edge beams 21M,21F'. The coupling means for the beams 21 preferably comprises two laterally extending ribs 46 provided on the male beam member 21M at the abutment surface 43 thereof in a vertically spaced apart configuration. The coupling means for the beam members furt~er comprises two corresponding receiving means 48 provided on the female beam member 21F at the abutment surface 44 thereof for engagement-wi-th the ri-bs 46 of the male beam member.
Preferably, the ribs 46 provide an upwardly open groove 50 therein. The corresponding receiving means 48 of the female beam member comprises a downwardly depending lip 52 to fit into the groove 50. Each of the laterally extending ribs 50 of the male beam member 21M and each of the corresponding receiving means 48 of the female beam member 21F preferably extend the entire longitudinal lengths of the members.
The laterally extending ribs 46 of the male beam members 21M preferably are provided with a beaded leading edge 54 (FIG. 4) to assist in guiding the lip 52 of the female beam member 21F into and out of the groove 50 in the rib 46 during engagement and disengagement of the male and female beam members. Whe~ these ~,~g~ 3 ~
members are disposed in mating engagement, they present a substantially planar concrete forming surEace comprised of the sheathing panels 22 retained on the panel support ledges 23,24 of the members.
Turning now to FIGURES 7 to 9, there is shown the use of an upper corner connecting bracket 56 and a lower corner connecting bracket 58 for connecting the abutting corner portions of two edge beams of a panel-bearing frame 20. In the speciEic case of FIG. 7, two male members 21M are illustrated in an abutting configuration.
The lower corner connecting bracket 58 has a generally L-shaped planar configuration and is contoured to mate with the two transversely disposed and abutting flanges 37 of the adjacent male beam members 21M. Thus, the lower connecting bracket has an upwardly extending wall portion 60 adjacent one edge thereof for intimate contact with the vertical faces 62 adjacent the bottom flanges 37 of the male members. As well, connecting bracket 58 also provides a rounded L-shaped groove 64 along the underside thereof. The groove 64 engages with the beads 41 provided on the respective bottom flanges 37 o~ the male beam members 21M.
, In order to secure two abutting edge beams 21 of the ; panel bearing frame 20 together by means of the lower corner connecting bracket 58, a plurality o~ s-crew fasteners 66 are introduced through corresponding apertures 68 therefor disposed in the wall portion 60 of bracket 58. The screw fasteners 66 engage with the vertical faces 62 of the male edge beam members 21M.
With regard to the upper corner connecting bracket 56, this bracket is also of a substantially L-shaped planar configuration, and provides an upwardly e~tending lip portion 70 along one edge thereof. This lip 70 abuts against the leading , edges 72 of the two abutting ledges 23 of the male edge beam `, members 21M. The remainder of the upper corner connecting bracket comes into contact with the underside of the ledges 23 of the edge beam members, and a corner bracket 56 is secured to the ledges 23 by means of screw fasteners 74 or the like introduced into the ledges 23 through corresponding apertures 76 provided in the upper 2 ~ 3 ~
~8271-15 corner connecting bracket 56.
Those persons skilled in this art will readily appreciate that the same corner connecting brackets 5~,58 will be used not only at the abutting corners of two male edge beam members 21M as shown in FIGURE 7, but also for the connection of any other two edge beam members, whether the connection be between a male and female beam member, or between two female members of a panel-bearing frame 20.
With reference now to FIGURES 10 and 11, FIG. 10 illustrates how the corner portions of the various mating edge beams of the panel bearing frames 20 are to be cut during fabrication in order to ensure that the panel frames, when assembled, provide a continuous and secure corner joint of four abutting panel frames 20, as shown in FIG. 11.
Taking each of the various corners of the panel frame members 20 of FIG. 10 in turn, the panel frame member 20a consists of the convergence of two female beam members 21F. As shown, the terminal ends of the two female beam members 21F of the panel frame 20a are cut obliquely during fabrication, preferably at an angle of 45 to the longitudinal direction of the-edge beams--21F, as shown by the abutting surfaces 78.
In the case of the panel frames 20b and 20c, these illustrate the corner convergence of a male edge beam member 21M
and a female edge beam member 21F. In this type of corner ' configuration, the terminal end of the female edge beam member 21F
is again cut obliquely at a preferred angle of 45 to the longitudinal direction of the edge beam member, as shown by the abutting surface 80. ~ corresponding male edge beam member 21M of the corner configuration 20b and 20c also has an oblique 45 cut made therein at its terminal end, as shown by the abutment surface 82 thereon. Thus, the surface 82 on a male beam member 21M abuts with the surface 80 of the female beam member 21F.
In addition to the abutment surface 82 provided on the male beam member 21M of the panel frames 20b and 20c, a second oblique surface 84 is provided on the edge beam members 21M. This second oblique surface 84 is also cut during fabrication of the ,~ .
~' .
2~ 3 3~
edge beam members at a preferred angle of 45 to the longitudinal direction of the members, but this abutment surface 84 is further oriented transversely to the abutment surface 8~ of the male edge member 21M. As best shown in FIG. 10, the intersection of the two abutment surfaces 82 and 84 meet at a point 86 which lies along the vertical surface of web extensions 35,36 which is on the same side as the laterally extending ribs 46 of the male beam members 21M. By providing the second oblique surface 84 on the male beam members 21M, the extending ribs 46 thereon will properly engage with the receiving means 48 o~ an adjacent female beam member 21F, whose corner ends will also have been cut obliquely to form the abutment surfaces 78 thereon.
The panel frame 20d shows a corner configuration comprising two male members 21M. Each of these male members have their abutting ends cut to form an oblique abutment surface 88 on each of the members, as previously described. As described above for the male member 21M of the panel frame 20b, a second oblique cut 90 is analogously made at the ends of the abutting male members 21M of the panel frames 20d.
To recapitulate, then, all male edge beams members 21M
according to the present invention will have their terminal ends cut with the two transversely disposed oblique surfaces 82,84 or 88,90 as described above, and all female edge beam members 21F
according to the present invention will have a single oblique cut at the terminal ends thereof to form the abutment surfaces 78 or 80. What results when the various edge beam members are assembled into panel frames 20, and when these frames are then engaged the one to the other, is the formation of a relatively tight-fitting and secure connection exemplified by FIGURE 11.
FIGURE 12 shows the sequence of connection of the various engaging faces of panel-bearing frames 20 composed of the interconnecting edge beams of the present invention. Other sequences of engagement will readily be apparent to those persons skilled in this art, and the following description is only intended to be a particular example of the steps involved in typically setting down a plurality of panel-bearing frames 20 onto ti 3 tj their supporting ledger beams, as shown in EIGS. 13 to 16.
Thus, to form a pouring surEace in a defined rectangular perimeter, a first panel-bearing frame 20, denoted ~A~ in FIGURE
12, is set down onto its supporting ledger beams at one of the corners of the rectangular perimeter with its two male edge beam members 21M having their extending ribs 46 facing inwardly of the perimeter to be occupied by other adjoining panels. A second panel-bearing frame 20, such as the one denoted "B", may now be engaged with the frame "A" by mating one of its female edge beam 10 members 21F with that of the male edge beam member 21M of panel "A". The panel "B" must be oriented such that its male edge beam members 21M face inwardly of the desired concrete forming perimeter, where further panels are to be added to complete the formwork. A third panel, designated as panel ~C~ in FIG. 12, may then have one of its female edge beam members 21F engaging with the second male edge beam member 21M of panel "A". Once again, the panel "C" is oriented such that its male edge beam members 21M
face inwardly of the concrete forming perimeter. Finally, the panel-bearing frame 20 denoted "D" may be engaged by its two 20 female edge beam members 21F to rêspective male edge beam members 21M of the panels "B" and ~Ci~.
From the foregoing description, those skilled in this art will readily appreciate that in order to set down the panel-bearing frames 20 in mating engagement, this must be done so that the female edge beam members of each newly introduced panel engages with an available male edge beam member 21M of a panel already in place. In order to disassemble the concrete forming structure composed of the panel-bearing frames 20, the steps described above are simply reversed.
Referring next to FIGURES 13 to 16, further details of interconnection of the edge beam members which make up the panel-bearing frames 20 are shown, for a typical configuration of panel frames 20 placed onto supporting ledger beams 3 as previously described. As best shown in EIG. 16, a stepped engagement clip 92 may be used to secure the male edge beam member 21M to its supporting ledger beam 3. This engagement clip is of necessity 2 ~ 3 '~
where it is intended to use the panel-bearing frames 20 in a flying-form structure.
The clip 92 provides an aperture 94 on the upper planar surface 96 thereof through which the shank of bolt fastener 42 is introduced. The head of bolt fastener 42 is retained within the channel 40 of the male edge beam member 21M as previously described. A nut 98 is used to secure the arrangement, and when the nut is tightened onto its bolt fa,stener 42, the lower planar surface 100 of the engagement clip 92 is urged against the underside of flange 102 of the ledger beam 3. A groove 104 on the engagement clip 92 is used to receive the beaded portion 106 of flange 102. This is intended to prevent any transverse movement of the engagement clip 92 with respect to the flange 102 against which it is urged. The longitudinal movement of the engagement clip 92 is prevented by the bolt retaining channel 40 of the male edge beam member 21M.
FIGURES 17 and 18 illustrate how the interconnecting panel-bearing frames 20 of the present invention may be configured around obstacles such as a row of concrete columns 108. FIG. 17 also shows how a raised platform or frame 110, whose height is greater than the thickness of the floor slab to be poured, may be placed at any desired location onto the surface of the sheathing panels 22 so as to create an opening in the poured slab for a stairwell or the like.
In FIGURE 18, the gap in the concrete forming surface defined by the sheathing panels 22, and caused by the presence of a row of concrete columns, may be filled with appropriately sized sheathing panels 112. These sheathing panels 112 span the gap between the panel-bearing frames 20 on either side thereof. The panels 112 are in turn shored by conventional means such as a series of wooden beams 114 placed thereunder. A post member and screwjack assembly 116, which is separate from the scaffolding system used to shore the panel-bearing frames 20, may be used to support the wooden beams 114.
Those persons skilled in this art will readily appreciate that the present inventlon has been described 28271-~5 hereinabove by way of example only, and that modiEications of detail can be made to the invention, all of which would come within its spirit and scope.
Claims (12)
1. An assembly of interconnecting edge beams for concrete sheathing panels, the said assembly comprising: a male beam member and a female beam member, said members being elongate and each providing panel support means for supporting an edge of a sheathing panel placed thereon, the members further each providing an abutment surface and coupling means for mating engagement of the male beam member with an adjacent female beam member, and whereby said male and female beam members, when disposed in mating engagement, present a substantially planar and continuous concrete forming surface comprised of said sheathing panels.
2. The assembly according to claim 1, wherein said coupling means comprises a laterally extending rib provided on the male beam member at the abutment surface thereof and a corresponding receiving means provided on the female beam member at the abutment surface thereof for engagement with the rib of the male beam member.
3. The assembly according to claim 2, wherein the laterally extending rib of the said male beam member provides an upwardly open groove therein and wherein the corresponding receiving means of said female beam member comprises a downwardly depending lip to fit into said groove.
4. The assembly according to claim 3, wherein said laterally extending rib of said male beam member and said corresponding receiving means of said female beam member extend the entire longitudinal lengths of the members.
5. The assembly according to claim 4, wherein said abutment surface of each of said male and female beam members is provided on a vertically disposed web of said members.
6. The assembly according to claim 5, wherein said laterally extending rib of said male beam member has a beaded leading edge to assist in guiding the said lip of the female beam member into and out of the said groove in the rib during engagement and disengagement of the male and female beam members.
7. The assembly according to claim 6, wherein said panel support means on each of said male and female beam members is a laterally extending ledge on said web disposed adjacent an upper terminal end thereof on a side of each of said beam members opposite the said abutment surfaces and coupling means thereof.
8. The assembly according to claim 7, wherein each of said male and female beam members provides a laterally extending flange on said web adjacent a lower terminal end thereof on a side of each of said beam members opposite the said abutment surfaces and coupling means thereof, said flange presenting a substantially planar surface for placement of said beam members onto a support surface therefor.
9. The assembly according to claim 8, wherein at least one of said male and female beam members provides a substantially T-shaped and outwardly open channel therein adjacent said laterally extending flange thereof for retaining the head of a bolt fastener while allowing the shank thereof to extend outwardly therefrom.
10. The assembly according to claim 9, wherein at least two of said laterally extending ribs are provided on the male beam member and at least two corresponding receiving means therefor are provided on the female beam member.
11. The assembly according to claim 10, wherein said male and female beam members are integrally formed from extruded metal stock.
12. The assembly according to claim 11, wherein said male and female beam members are formed from aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002085536A CA2085536A1 (en) | 1992-12-16 | 1992-12-16 | Interconnecting edge beams for concrete forming panels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002085536A CA2085536A1 (en) | 1992-12-16 | 1992-12-16 | Interconnecting edge beams for concrete forming panels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2085536A1 true CA2085536A1 (en) | 1994-06-17 |
Family
ID=4150860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002085536A Abandoned CA2085536A1 (en) | 1992-12-16 | 1992-12-16 | Interconnecting edge beams for concrete forming panels |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2085536A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2782337A1 (en) * | 1998-08-11 | 2000-02-18 | Hussor Erecta Sa | Covering plate for bridge roadway slabs has panels fixed to floor by longitudinal abutment of plates |
| EP1715118A2 (en) * | 2005-04-18 | 2006-10-25 | Ingenieria de Encofrados y Servicios, S.L. | Fully recoverable shuttering system for cast floors |
| CN105544969A (en) * | 2016-01-18 | 2016-05-04 | 青岛建安建设集团有限公司 | Formwork bar laying construction method, combined type splitting formwork and formwork quick connector |
| DE102015223762A1 (en) * | 2015-11-30 | 2017-06-01 | Peri Gmbh | Shuttering and slab formwork with such a formwork part |
| DE102016204633A1 (en) * | 2016-03-21 | 2017-09-21 | Peri Gmbh | Ceiling table and ceiling formwork with such a ceiling table |
| IT202200003566A1 (en) * | 2022-02-25 | 2023-08-25 | Ilpa Eng S R L | NEW PANEL FOR FORMWORK FOR INCREASED THICKNESS SLABS AND WITH FIXING BY PINS |
-
1992
- 1992-12-16 CA CA002085536A patent/CA2085536A1/en not_active Abandoned
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2782337A1 (en) * | 1998-08-11 | 2000-02-18 | Hussor Erecta Sa | Covering plate for bridge roadway slabs has panels fixed to floor by longitudinal abutment of plates |
| EP1715118A2 (en) * | 2005-04-18 | 2006-10-25 | Ingenieria de Encofrados y Servicios, S.L. | Fully recoverable shuttering system for cast floors |
| DE102015223762A1 (en) * | 2015-11-30 | 2017-06-01 | Peri Gmbh | Shuttering and slab formwork with such a formwork part |
| US10640994B2 (en) | 2015-11-30 | 2020-05-05 | Peri Gmbh | Ceiling formwork comprising a formwork part having a compensation element |
| CN105544969A (en) * | 2016-01-18 | 2016-05-04 | 青岛建安建设集团有限公司 | Formwork bar laying construction method, combined type splitting formwork and formwork quick connector |
| CN105544969B (en) * | 2016-01-18 | 2017-08-18 | 青岛建安建设集团有限公司 | Formwork bar paving construction method, combined type partition formwork and formwork quick disconnecting joint |
| DE102016204633A1 (en) * | 2016-03-21 | 2017-09-21 | Peri Gmbh | Ceiling table and ceiling formwork with such a ceiling table |
| US10907364B2 (en) | 2016-03-21 | 2021-02-02 | Peri Gmbh | Ceiling table and ceiling formwork comprising such a ceiling table |
| IT202200003566A1 (en) * | 2022-02-25 | 2023-08-25 | Ilpa Eng S R L | NEW PANEL FOR FORMWORK FOR INCREASED THICKNESS SLABS AND WITH FIXING BY PINS |
| EP4234843A3 (en) * | 2022-02-25 | 2023-09-13 | ILPA Engineering S.r.l. | New panel for formworks for slabs having increased thickness and being secured by pins |
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