Abstract: A corner shuttering element with two limbs arranged at an angle to each other, on the outer edge of which limbs, edge strips are arranged that can be retracted and extended by means of articulated levers, wherein the edge strips can each be aligned and fixed in their position by means of a plurality of locking elements arranged distributed over the height of the corner shuttering element, and wherein the locking elements are arranged on guides for pull-out webs of the edge strips.

Abstract: A tool (FIG. 1) that assists in the placement and fastening together of pieces of material. The invention is comprised of valleys into which said pieces are placed. Said valleys have openings (portals) so that the exposed face of one piece can be aligned flush with the exposed face of another piece. The portals also allow an adequate means of fastening such as nails, screws, adhesive, etc. to be used to fasten them together at a predetermined angle. The invention may have multiple protruding valleys extending from a main valley, so that a base piece of material may have several pieces of material fastened to it—such as in framing the studs of a wall unit—without measuring distances or angles between pieces, thus saving considerable time, labor, and money.

Abstract: The present invention relates to the creation of structures comprised of earthen-mixed composites. This forming system allows for the efficient creation of structures with relatively low cost, time, and labor with exceptional accuracy. Moreover, the system employs accessible and simple construction materials, allowing users of all skill levels to create structures that may serve as dwellings, educational, working, recreational sites, and the like.

Abstract: A system for constructing a form for forming a concrete structure is disclosed herein. The system may include a number of extensible form panels. An extensible form panel may be constituted with a basis frame having a basis frame section and an extensible frame section extensible for a variable amount in at least one direction, along one axis. The frame sections may be configured to respectively accept and support basis and filler facings. The extensible frame section may include male/female endings. The system may also include a capping member with male and/or female endings. A form panel may include hinges, which may be swivelable, drive screws, and/or electronic motors. The system may further include a stub free to facilitate vertical coupling of form panels. In various embodiments, the parts may be formed with reusable material or materials.

Abstract: The present invention is directed to a flexible concrete form system having both flexible and rigid parts that are easily assembled and disassembled using a multi-contact point connection system. The concrete form system can be extended or stacked in a wide variety of configurations to accommodate almost any desired concrete shape.

Abstract: A connector for connecting formwork panels in a formwork assembly comprises a first elongate portion having triangular cross-section, a second elongate in sliding contact with the first elongate portion, and a third elongate portion in sliding contact with the first elongate portion. A guiding device is coupling the first elongate portion, the second elongate portion, and the third elongate portion. An actuator drives movement of the second elongate portion and third movement along the guiding device. The second elongate portion and the third elongate portion are movable toward and away from each. The second and third elongate portions also each being movable relative to the first elongate portion.

Abstract: Embodiments of an adjustable and reusable brace, kicker and tie apparatus are disclosed herein. Various embodiments include a bracing arrangement for bracing an inner and an outer form for forming a concrete structure. In various embodiments, the bracing arrangement may include interior and exterior vertical bracing members and a horizontal tie member removably and/or adjustably couple the vertical brace members at respective top or bottom ends of the vertical brace members. In various embodiments, a pair of bracing arrangements may share an exterior vertical brace member, which may be angled, for providing support at a corner of a form. In various embodiments, various bracing arrangement may be employed to form a bracing cage. The bracing arrangements may be constituted with material or materials designed for reusability.

Abstract: The invention concerns a panel formwork corner system, comprising a) a panel formwork inner corner element (1), with two inner limbs (5, 6) that are connected to each other and arranged at an angle with respect to each other, b) a panel formwork outer corner element (2) with two outer limbs (25, 26) that are rigidly connected to each other and disposed at an angle with respect to each other, c) two rectangular panel formwork elements (3, 4), each being formed with at least one tie hole (13, 14, 15, 16), wherein all tie holes (13, 14, 15, 16) of a panel formwork element (3, 4) are disposed in a common tie hole plane (A), wherein this tie hole plane (A) extends centrally between two parallel lateral outer edges (17, 18, 19, 20) of the rectangular panel formwork element (3, 4) and perpendicularly with respect to the formlining plane (SE), wherein the position of each tie hole (8, 9, 10, 11) of each inner limb (5, 6) with respect to three lateral outer edges (21, 12, 22) of the inner limb (5, 6) corresponds to t

Abstract: The invention provides a reusable formwork for forming a polygonal upright concrete column using a plurality of retaining devices and a plurality of panels arranged with the retaining devices for providing a forming cavity between the panels adapted to receive concrete therein. Hooping means are used to hoop the panels forming the cavity.

Abstract: A turnbuckle device (12, 13, 14; 20; 35a, 35b, 35c; 44a, 44b, 44c) for clamping concrete shell elements (1, 2), having two claws (15a, 15b, 15c, 16a, 16b, 16c; 21, 22) and a wedge (17a, 17b, 17c; 23; 37a, 37b, 37c; 46a, 46b, 46c), the claws being displaceable toward one another in a clamping direction (34), the wedge being guided in the clamping device along a wedge guiding direction (33), and the scale of the propulsion of the wedge in the turnbuckle device determining the displacement of the claws, is characterized in that the wedge guiding direction and the clamping direction enclose an angle less than 90°. Mutual obstruction of the turnbuckle devices neighboring wedges is thus avoided.

Abstract: The invention provides a retaining device for assembling two panels together. The device has a support and first and second pairs of spaced-apart parallel walls extending along the support and projecting outwardly therefrom for providing first and second holding channels extending angularly to each other, each channel being adapted to receive an edge of one of the panels therein in a snugly relationship to allow assembling of the two panels. The invention also provides a formwork for forming a polygonal upright concrete structure using a plurality of retaining devices and a plurality of panels arranged with the retaining devices for providing a forming cavity between the panels adapted to receive concrete therein. There is also provided a packaging assembly for packaging goods using a plurality of retaining devices and a plurality of panels arranged with the retaining devices for providing a protecting cavity between the panels adapted to receive the goods therein.

Abstract: The invention concerns a panel formwork corner system, comprising a) a panel formwork inner corner element (1), with two inner limbs (5, 6) that are connected to each other and arranged at an angle with respect to each other, b) a panel formwork outer corner element (2) with two outer limbs (25, 26) that are rigidly connected to each other and disposed at an angle with respect to each other, c) two rectangular panel formwork elements (3, 4), each being formed with at least one tie hole (13, 14, 15, 16), wherein all tie holes (13, 14, 15, 16) of a panel formwork element (3, 4) are disposed in a common tie hole plane (A), wherein this tie hole plane (A) extends centrally between two parallel lateral outer edges (17, 18, 19, 20) of the rectangular panel formwork element (3, 4) and perpendicularly with respect to the formlining plane (SE), wherein the position of each tie hole (8, 9, 10, 11) of each inner limb (5, 6) with respect to three lateral outer edges (21, 12, 22) of the inner limb (5, 6) corresponds to t

Abstract: A transverse bolt (1) is to be fastened to a formwork element (110, 120) of a concrete formwork (100), preferably a curved concrete formwork. The transverse bolt (1) comprises a first end section located at a first end of the transverse bolt (1), in the longitudinal direction thereof, having at least one elongated hole, and at least one round hole. A curved concrete formwork comprises formwork elements (110, 120) that are provided with such a transverse bolt. A bolt fixture (2), by means of which the transverse bolt (1) can be fastened to the formwork element (110, 120) of the curved concrete formwork, is arranged on the transverse bolt. The elongated hole (3) and the round hole (4) are preferably located next to each other in the longitudinal direction of the transverse bolt (1) in the first final section of the transverse bolt (1).

Abstract: An above ground water storage device includes a plurality of modular walls coupled together in series to form a substantially continuous perimeter. Each of the plurality of modular walls includes a wall panel that is inclinable with respect to a horizontal orientation, and a support base that is coupled to a portion of the wall panel. A liner covers an internal side of the plurality of modular walls and an area encompassed by the continuous perimeter. At least one modular corner wall is positioned with the plurality of modular wall panels to form a corner in the substantially continuous perimeter. The at least one modular corner wall has an angled side with an angle corresponding to the inclined angle of an adjacent modular wall.

Abstract: Supplemental bridging straps are used to increase the strength of a flexible metal concrete form assembly. A metal form has a flexible panel member with a perimetral flange projected laterally from one side thereof. Each of a pair of transversely opposite side sections of the flange is segmented by a plurality of longitudinally spaced V-shaped notches having their apices adjacent the one side of the panel member to provide for a lateral flexing movement of the panel member to a preselected shape. With the panel member in the predetermined shape, the segments in each of the flange side sections are connected together against relative movement to retain the predetermined shape of the panel member. In a first preferred embodiment, each flange segment is connected to an adjacent flange segment by a flexible metal strap. In a second preferred embodiment, extended flexible metal straps are used to interconnect a central flange segment to each of the pair of adjacent flange segments.

Abstract: A forming panel and method for using the same in construction of self-sustaining concrete wall structures is provided wherein a flexible barrier element is provided along a margin on the forming panel for impeding the flow of water and fine particles of a concrete mix pour past the barrier element. The margin may be along the perimeter edge of the forming panel or along an opening interior to the perimeter of the forming panel. When located near the perimeter, the flexible barrier element may be positioned in a slot extending parallel to the margin and located in the frame. When located near an interior opening, the barrier element may be provided on a reinforcing member positioned around the opening or on a door which shifts to improve access through the opening during placement of forming ties or the like.

Abstract: Disclosed is a formwork element (1) which can be assembled with other formwork elements (1) so as to form a formwork structure. A formwork shell (4) having an adjustable curvature is supported by means of back supports (5) so as to create a stiff formwork element (1) that sustains concreting pressure. The supports (5) have a preferably trapezoidal cross section and are provided with fastening flanges (6) on the edges thereof and at least one girder (7) that is located at a distance from the formwork shell (4). The length of the girder (7) is adjustable in order to set or modify the curvature of the formwork shell (4) which is mare of steel or plastic. Intermediate pieces (9) are disposed between the fastening flanges (6) of the supports (5) and the formwork shell (4). The fastening flanges (6) are fixed to said intermediate pieces (9) so as to be pivotable or tiltable relative thereto about the longitudinal direction thereof.

Abstract: A forming panel and method for using the same in construction of self-sustaining concrete wall structures is provided wherein a flexible barrier element is provided along a margin on the forming panel for impeding the flow of water and fine particles of a concrete mix pour past the barrier element. The margin may be along the perimeter edge of the forming panel or along an opening interior to the perimeter of the forming panel. When located near the perimeter, the flexible barrier element may be positioned in a slot extending parallel to the margin and located in the frame. When located near an interior opening, the barrier element may be provided on a reinforcing member positioned around the opening or on a door which shifts to improve access through the opening during placement of forming ties or the like.

Abstract: The invention involves a manner of fabricating 3D construction forms by preparing first and second standard sized panels with a predetermined pattern of perforations and assembling same in spaced apart relationship by connecting the panels together with connectors designed to engage the perforations in the panels. The perforations of the panels are arranged in a specific pattern suitable for the assembly and use of the construction forms by means of an apparatus designed to form the perforations. The method also uses apparatus which assist in the orientation and alignment of the connectors to engage the panels. Modifications of the panels and connectors will allow the formation of 3D construction forms with corners of various configuration.

Abstract: A building member forming apparatus having panels and a conversion corner bracket. The panels are typically dimensioned in metric units. The conversion corner bracket can include a leg having a predetermined width and a body configured to chamfer a building member. The conversion corner bracket is securable to the panels to form an orifice. When the orifice receives a construction material, the building member can be formed. By using the panels and the conversion corner bracket, the building member that has been formed within the orifice is chamfered and possesses standard U.S. customary units. The conversion corner creates a chamfer upon the building member and permits dimensioned panels with one set of units to form a building member with another set of units. The leg and the body are not symmetrical and include bores or apertures that align with bores or apertures in the building member forming apparatus.

Abstract: An adjustable form holder, comprising a first bracket and a second bracket pivotally attached to each other by a hinge, so as to allow relative pivoting about a substantially vertical axis. The first and second brackets provide substantially vertical slots configured to receive an end of an elongate concrete form member. The hinge allows the concrete form members to be held in place on-edge at a selected horizontal angle relative to each other. The hinge may include a central aperture for receiving a form stake. Multiple form holders may be stacked for forming walls.

Abstract: A modular assembly for creating formwork for casting vertical concrete structures is characterized by elongated wall elements which are disposed in edge to edge relationship in two facing rows and which are simultaneously retained in edge to edge relationship and in facing relationship by connecting members. Retaining elements slidably engage connecting members and wall elements in diagonal relationship. Connecting members include engagement means for cooperating with notches in rigid panels which are disposed against the interior surfaces of flat walls formed by the formwork.

Abstract: It is constituted by several plates (1), provided in its outer side (4) with transverse ribs (5), formed by C-shaped profiles and joined together to form a prismatic contour (7), closed by the inner flat sides of all the plates, the plates comprising a means of mutual fixing and detachable means of immobilization. The means of mutual fixing are constituted by hinges (8), fixed to the edges of the plates, and by corresponding oblong orifices (9), evenly distributed on the plate (1) in transversal direction. The means of immobilization are constituted by a through hole (11) made in the shaft of each hinge (8) and by a sliding element (12) provided with a wedge-shaped end (13).

Abstract: A forming panel and method for using the same in construction of self-sustaining concrete wall structures is provided wherein a flexible barrier element is provided along a margin on the forming panel for impeding the flow of water and fine particles of a concrete mix pour past the barrier element. The margin may be along the perimeter edge of the forming panel or along an opening interior to the perimeter of the forming panel. When located near the perimeter, the flexible barrier element may be positioned in a slot extending parallel to the margin and located in the frame. When located near an interior opening, the barrier element may be provided on a reinforcing member positioned around the opening or on a door which shifts to improve access through the opening during placement of forming ties or the like.

Abstract: A collapsible corner assembly is used in a collapsible form assembly to form a hollow structure, such as a four or five sided hollow concrete structure. One embodiment of the form assembly includes two collapsible corner assemblies, two fixed corner assemblies, and intermediate panels coupled to the corner assemblies. Each collapsible corner assembly preferably includes collapsible side portions and retractable members forming outer corner forming surfaces. To collapse the collapsible corner assembly, the retractable members are retracted and the collapsible side portions are moved inwardly. Collapsing the collapsible corner assemblies allows the form assembly to be removed from the hollow structure.

Abstract: A concrete form system for receiving concrete includes a plurality of interlocking form panels having opposite side ends, and which capable of being selectively arranged in series as a wall of a form configured to receive concrete. A plurality of attachments are each disposed between adjacent form panels, and vertically engage the side ends of adjacent form panels to interlock the side ends of the adjacent form panels to resist lateral separation of the adjacent form panels. The attachments an include one or more channels or engagement walls, and an insert received withing the channels or engaging the engagement walls. Ties or brackets can extend between parallel, spaced-apart form panels to maintain a predetermined, spaced-apart distance. A gauge bar can moveably extend into the form to indicate a fill level.

Abstract: The formwork system is based on the use of modules that can be coupled to each other, both laterally and vertically, with each one comprised of a pair of metal sheets (2) that determine the inner and outer faces of the formwork, with threaded transverse rods (25) that join the sheets (2) to each other, and welded to the outer sides of these are a series of trapezoidal profiles (7) and two edge profiles (7′). The system includes stiffeners (10) that are provided with tensioning devices, with the stiffeners (10) connected to the trapezoidal profiles (7) by triangular plates (13) on which act the tensioning devices in order to move these triangular plates and thereby to curve the panel, maintaining the curvature in the blocked position by means of a device installed between the triangular plate (13) and the corresponding trapezoidal profile (7) and by another tensioning device (12) applied to the stiffeners (10).

Abstract: A corner form assembly for forming inside corners of concrete structures. A pair of double bias form components, each of which has an acute angle between a side rail and the face sheet are arranged with the side rails in contact engagement to form a form assembly with an inside angle equal to twice the acute angle of the side rails. A reverse bias coupler is used to join the double bias form components with conventional wall form panels having 90° end rails. The corner assembly acts to release the forces imposed on the components by the poured concrete upon disassembly and so allows the components to be readily stripped from the poured wall.

Abstract: A building member forming apparatus comprises panels and a conversion corner bracket. The panels are typically dimensioned in metric units. The conversion corner bracket can include a leg having a predetermined width and a body configured to chamfer a building member. The conversion corner bracket is securable to the panels to form an orifice. When the orifice receives a construction material, the building member can be formed. By using the panels and the conversion corner bracket, the building member that has been formed within the orifice is chamfered and possesses U.S. customary units. Thus, the conversion corner creates a chamfer upon the building member and permits dimensioned panels with one set of units to form a building member with another set of units. Preferably, the leg and the body are not symmetrical and include bores or apertures that align with bores or apertures in the building member forming apparatus.

Abstract: A building member forming apparatus is comprised of standardized metric dimensioned panels including plywood paneling, outer horizontal support beams, vertical support beams, and inner horizontal support beams. A conversion corner bracket has a first leg and a second leg joined to form a right angle, a V-shaped indented outer corner, and a rounded inside corner opposite the V-shaped indented corner. The conversion corner bracket is attached to the panels by securing members which secure the conversion corner bracket to the vertical support beam of the panels. The conversion corner allows the apparatus to convert standardized dimensioned panels for use with either metric or U.S. customary unit-based construction structures.

Abstract: A modular assembly for creating formwork for casting vertical concrete structures is characterized by elongated wall elements which are disposed in edge to edge relationship in two facing rows and which are simultaneously retained in edge to edge relationship and in facing relationship by connecting members. Retaining elements slidably engage connecting members and wall elements in diagonal relationship. Connecting members include engagement means for cooperating with notches in rigid panels which are disposed against the interior surfaces of flat walls formed by the formwork.

Abstract: A bracket for use with a system of forms for holding poured concrete forming concrete walls. The bracket is used to hold the forms at corners of the system when the concrete walls change directions. The corner bracket includes formations to hold the wall panels in place at the corner.

Abstract: A building member forming apparatus is comprised of standardized metric dimensioned panels including plywood paneling, outer horizontal support beams, vertical support beams, and inner horizontal support beams. A conversion corner bracket has a first leg and a second leg joined to form a right angle, a V-shaped indented outer corner, and a rounded inside corner opposite the V-shaped indented corner. The conversion corner bracket is attached to the panels by securing members which secure the conversion corner bracket to the vertical support beam of the panels. The conversion corner allows the apparatus to convert standardized dimensioned panels for use with either metric or U.S. customary unit-based construction structures.

Abstract: Structures for securing foam panels in position with respect to each other in order to form a mold for the pouring of concrete, such as in the case of the pouring of a building foundation or building wall are disclosed. A first type of member which has pairs of facing flanges for engaging facing walls at opposite ends on the member. This first type of member comprises an upper and a lower section. The upper and the lower section are connected to each other by at least one frangible bridge, which may be broken to accommodate the need for a shorter member at the top and bottom of the mold. A corner brace, having two pairs of facing flange members located in its upper section, and two pairs of facing flange members located in its lower section, is adapted to engage the four panel corners which meet at the corner of the poured cement mold where the top of one row of panels meets the bottom of the next row of panels.

Abstract: Disclosed herein is a corner joint support for holding forms for casting upright concrete walls, comprising an outer form support an inner form support, the outer form support including inner and outer upright support portions joined by platforms extending therebetween, the inner form support including inner and outer upright support portions joined by platforms extending therebetween, and spacer means for positioning the inner form support relative to the outer form support.

Abstract: Formwork system for concrete casting, comprising formwork units built up of modular panels, horizontal and vertical brace rows, where horizontal channel profiles (3) are fastened to the formwork skin (4) with a constant spacing, vertical profiles (2) are resting against the horizontal channel profiles (3), horizontal flange profiles or flange pads (1) which span over four, six and so on, modules, are arranged outside the vertical profiles (2), braces are led through brace holes in the skin (4) in the three profiles (1, 2, 3) in both the formwork sides, the horizontal flange pads (1) extend over at least three vertical profiles (2), and the panels are arranged horizontally or vertically as a whole number of modules.

Abstract: A prefabricated wall forming structure for constructing reinforced concrete walls employs insulating foam plastic panels that are interlocked into two parallel concrete impervious walls by connectors having two I beam channels that are spaced apart by tie elements having an arcuate cross section. The tie elements support reinforcing bars. The I beams may have striated outer faces to hold stucco and plaster. The web of at least one of the I beams may have an elongate channel or raceway for wires and pipes. Connectors may be applied vertically and horizontally to seal all edges of the panels and resist the hydraulic forces of the poured concrete. The connectors and panels remain in place after concrete is poured to create an insulated concrete wall. A method of extruding the connectors uses an intermittently opening and moving die passage to create the tie elements and the I beams in one continuous process.

Abstract: A method of forming concrete integral box shaped modules provides dimensional accuracy and sustains closer tolerances thus permitting surfaces of adjacent modules to match. The method utilizes a standard fixed box frame with vertical walls that can be easily reset after forming a module. The method includes the steps of constructing a fixed box form with four vertical rectangular sides and a top horizontal surface, top trays extending out from top edges of the rectangular sides and bottom trays extending out from bottom edges. Corner fillers are placed in vertical corner spaces formed by the four vertical sides, steel mesh and rebar is laid on the vertical sides and in the trays, the trays are then filled with concrete and concrete is sprayed onto the vertical sides. The module is steamed to set the concrete, the trays are removed and the module is raised initially by jacking to release the module from the box form.

Abstract: A metal form has a flexible panel member with a perimetral flange projected laterally from one side thereof. Each of a pair of transversely opposite side sections of the flange is segmented by a plurality of longitudinally spaced V-shaped notches having their apices adjacent the one side of the panel member to provide for a lateral flexing movement of the panel member to a preselected shape. With the panel member in the predetermined shape, the segments in each of the flange side sections are connected together against relative movement to retain the predetermined shape of the panel member. In a first preferred embodiment, each flange segment is connected to an adjacent flange segment by a flexible metal strap. In a second preferred embodiment, extended flexible metal straps are used to interconnect a central flange segment to each of the pair of adjacent flange segments.

Abstract: A new Concrete Corner Form for expediting the process of laying out and setting up concrete forms. The inventive device includes a pair of corner support wall members integrally joined at one end and orthogonally oriented relative to one another, and a pair of cross braces each fixedly mounted to a bottom edge of each of the pair of corner support wall members and diagonally oriented thereto. Each of the pair of cross braces extend beyond the pair of corner support wall members so as to form a ledge for supporting a concrete form placed against one of the pair of corner support wall members. Each of the pair of corner support wall members has a plurality of holes therethrough for receiving fasteners. As such, a concrete form placed against one of the pair of corner support wall members is secured thereto by a fastener driven through one of the plurality of holes and into the concrete form.

Abstract: A modular wall form assembly includes two adjacent form units and a fastening lever. Each of the form units has an upright flat panel, a connecting plate extending rearwardly and inclindedly from the mating edge of the flat panel. Each of the connecting plates has a positioning hole which has a generally oblong cross-section which has two opposed side walls defining its width. The connecting plates contact complementarily one another and the positioning holes are at least partially aligned with one another. The fastening lever has a handle portion and a fastening portion. The fastening portion has a base portion, a neck portion and an enlarged head portion. Each of the neck and head portions has a generally oblong cross-section. The neck portion has two opposed shorter sides in the lengthwise direction.

Abstract: A corner joint tie includes first and second forward plates connected along a common vertical edge and oriented at an angle of less than 180.degree. with respect to one another. A pair of first and second rearward plates are connected together at the same angle as the forward plates, and spaced rearwardly from the respective first and second forward plates by first and second straps. A rib is affixed along the length of each rearward plate to strengthen the rearward plates against flexion along their lengths. The inner and outer plates, associated straps, and associated ribs form an inner tie portion for retaining a pair of form panels at a corner. An outer tie portion is connected to the inner tie portion so as to retain a second pair of form panels parallel to the first pair of form panels at a corner.

Abstract: A prefabricated wall forming structure for constructing reinforced concrete walls employs insulating foam plastic panels that are interlocked into two parallel concrete impervious walls by I beam channels that are spaced apart by tie elements. The tie elements can support horizontal or vertical reinforcing bars and prevent the foam walls from spreading apart under the hydraulic force of the poured concrete. The I beams snugly engage the edges of the foam panels to provide a concrete imprevious seal and align the panels vertically and horizontally. A corner connector performs a similar function.

Abstract: In order to form a chamfer on an outside corner of a poured concrete structure, a concrete forming system includes a first form panel having an inwardly facing surface and second form panel also having an inwardly facing surface. The first form panel is secured to the second form panel with the inwardly facing surfaces at an angle to one another and the inwardly facing surfaces of the form panels have adjacent side edges for forming an outside corner. A chamfer strip including a body portion and a tail portion is provided for forming a chamfer on the outside corner. The body portion is substantially hollow and has three sides arranged so as to be generally triangular in shape and the tail portion comprises an elongated continuation of one of the sides of the body portion. With this understanding of the concrete forming system, the chamfer strip is formed in such a manner as to permit flexing of the chamfer strip so as to create a seal with the form panels during the pouring of concrete.

Abstract: Metallic channel members hold forms for making pads, sidewalks, foundations, headwalls, and other structures. In a first embodiment, a channel member of linear configuration has a width that tightly receives abutting forms and has sidewalls of differing heights. In a second embodiment, one of the sidewalls converges toward the other and abuts a form along a line of contact. In additional embodiments, a pair of metallic channels are hingedly interconnected to one another or are fixedly secured to one another at a predetermined angle such as ninety degrees. In the single channel member embodiments, a bottom wall of the channel member may have a transverse bend formed in it to facilitate wheelchair ramp construction, and in the embodiments including a pair of channel members, one member of the pair may be oriented at a predetermined angle such as five degrees relative to the other member of the pair to facilitate the construction of inclined wheelchair ramps.

Abstract: A wall form assembly (10, 10", 10'") has a pair of form wall assemblies (12A, 12B) which are kept in preselected spaced parallel relationship by means of cross members (16) fitted within end slots (36) and interlocked by means of pins (38) with elongate braces (30) mounted for movement from a low profile position for transport to a high profile operative position in which the width dimension (32) is transverse to the plane of the form wall (18-22B) for maximum resistance to bowing from the hydrostatic forces of wet cement.

Abstract: A modular building system for constructing the frame of a structure. Standardized foundation forms, vertical forms, and tie beam forms are attached to each other. The vertical forms are hinged so as to be capable of defining a corner of any angle. Cover plates are selectively inserted into the tie beam forms so as to define a reception recess which corresponds to the size of a roof truss being used. The various forms can be attached to each other with a minimal amount of labor.

Abstract: An inside corner form for forming an inside corner of a wall structure for casting concrete includes a central member for forming the corner, side members for forming portions of the walls adjacent the corner, an actuator for expanding and contracting the inside corner form and a lid for five sided pours. Slide lugs are provided to engage the central and side members such that the members are maintained in their proper orientations, while still permitting the members to slide relative to one another during the expansion and contraction of the form. A flowable material is injected between the central and side members for lubrication and to form a barrier to prevent grout from seeping between the members of the inside corner form and lid.

Abstract: The present invention includes a concrete corner forming device of solid metal construction for forming a 45.degree. angle, 90.degree. angle, off set angle, and the hinge type angle that forms other various degree angles. The hinge type corner can adapt to most any angle by utilizing the hinge designed into it. This invention is of knockdown construction for ease in transportation to a work site.

Abstract: A finishing cap for concrete formwork is described herein for providing smooth finished concrete joints and corners while reducing the time, labor, expense, and expertise required to make such a joint. The finishing cap provides two non-parallel edges forming an angle, wherein the concrete formwork is fitted into the angle so provided. The angle between the edges of the finishing cap is provided so as to be somewhat smaller than the final desired angle of the finished concrete joint. A pinching action is created between the edges of the finishing cap and the formwork, and this pinching action prevents stones and concrete from entering the joint and roughing up the final finished joint. After the concrete is poured, smoothed and set, the finishing cap may be easily removed and a smooth finished corner is produced. The invention is described in relation to concrete formwork for stairs and walls.