Abstract: A formwork assembly is adapted to receive concrete to produce structures such as wall structures. The formwork includes PVC tubular form elements having recessed female engagement portions. The female engagement portions are adapted to receive respective male engagement portions. An octagonal form element has a female engagement portion positioned at each vertex between adjacent sides. A recessed female engagement portion is closed to the interior of the form element but open to the exterior of the form element. Thus, the form element includes a plurality of vertices open to the exterior. The form elements also include male engagement portions at an open side. Wall panels, corner panels, and joint connectors can also include male engagement portions. The male engagement portions and female engagement portions are adapted to mate to form a formwork arrangement having a substantially flat exterior wall. A formwork assembly can additionally include concrete flow apertures and insulation.

Abstract: A wall forming system that uses a pair of panels in combination with a furring strip assembly and retainer The pair of panels are placed in spaced relation using the combination of the furring strip assembly and the retainer wherein the furring strip assembly holds the exterior of the panels while the retainer is disposed between the panels to hold them at a predetermined distance. By holding the panels at a predetermined distance concrete is poured within the cavity formed between the panels to create a wall.

Abstract: The present invention relates to a formwork metallic form the molding in concrete in construction works and substructure. The invention is easy handle for uses numerous, with characteristic modular to facilitate the connection between them by means accessories metallic. These formworks metallic are modules which form steel sheets with reinforcements and are sizes according the requirements in work. These formworks by given its vicinity the give the form to concrete especially walls flagstones and mezzanine's slabs. The production is made in steel sheet from 2 to 3 mms of thickness and the conformed units can have a weight of up to 43 kilograms and in dimensions that vary from the 5 to 80 cms of wide, and from the 20 cms to 240 cms of height, with growing scales of 5 cms among the different measures.

Abstract: A self-climbing concrete wall form hoist for forming a concrete wall section atop a previously formed wall section has a wall mounting releasably secured to the previously formed wall section, a moveable vertical mast, a channel in the wall mounting which guideably receives the moveable mast, a platform alternatively supported on the mast and on the wall mounting, upper and lower dog latch assemblies mounted on the platform and pivotable between a platform raising position when the mast is supported on the wall mounting and a mast raising position when the platform is supported on the wall mounting, and an extensible and retractable linear actuator interconnecting the upper and lower dog latch assemblies for raising the platform relative to the mast when the dog latch assemblies are in the platform raising position and for raising the mast relative to the platform when the dog latch assemblies are in the mast raising position.

Abstract: The disclosure is for a method and apparatus for constructing a concrete wall with a single pouring of concrete. The mold for the pouring of the wall is formed essentially of plastic foam insulation which remains attached to the finished wall to serve as thermal insulation. The wall structure is therefore self jigging and requires no elaborate mold structure or any time or labor to remove the finished wall from the mold.

Abstract: A side wall system for a concrete casting mould, including a side part (2, 3) which is removably attachable to a casting bed (1) by means of one or several magnets (7). The body (6) of the magnet part that carries the magnet (7) includes a pivoting shaft (10) about which the magnet part (6, 7) can be pivoted into a lower position wherein the magnet (7) is fastened to the casting bed (1) and into an upper position wherein the magnet is spaced from the casting bed. The side part (2, 3) includes a holder (5) on which the pivoting shaft (10) of the magnet part can be hung so that it can be pivoted between its lower and upper positions. The holder (5) has a mounting face to which the upper surface of the magnet (7) can be fastened by means of the magnetic force when the magnet is pivoted into its upper position about its pivoting shaft.

Abstract: A method for constructing an upper concrete building unit on top of a pre-formed lower concrete building unit includes: (a) mounting vertical positioning pegs on the lower building unit; (b) disposing a horizontal floor form panel on top of the lower building unit, and providing holes in the floor form panel for passage of the positioning pegs to project upward through the floor form panel; (c) pouring concrete onto the floor form panel to form a concrete floor structure of the upper building unit with the positioning pegs projecting outwardly and upwardly therefrom; (d) mounting an upright wall form assembly on portions of the positioning pegs which project from the concrete floor structure of the upper building unit; and (e) pouring concrete into the wall form assembly to form a concrete wall structure of the upper building unit.

Abstract: A stud form and system for forming a preformed concrete wall panel having a solid portion and a plurality of vertical concrete studs joined to the solid portion. The stud form includes a substantially U-shaped channel having a face portion that defines an elongated plane and leg portions extending along side of and away from the elongated plane to define a predetermined channel depth. The stud form further includes means for integrally connecting the stud form to the solid portion of the wall panel with the channel opened toward the solid portion.

Abstract: A portable concrete molding apparatus for forming concrete structures of a predetermined configuration, either on-site or at a central manufacturing facility. The apparatus includes a trailer having furnace plenum bounded by a pair of fixed walls. Each fixed wall cooperates with a movable wall for forming a mold therebetween. Each movable wall includes a concrete inlet for introducing concrete into the bottom portion of the mold. The fixed and movable walls include push-off valves for ensuring separation of a concrete structure from the mold walls, as the mold walls are separated.

Abstract: Reinforced concrete building products are manufactured using a two-part mould (2, 3), the two parts being hinged together about an axis (4) which is adjacent an edge of each part-mould (2, 3). Glass-reinforced concrete is applied to each part-mould (2, 3), then allowed to partly dry before the part-moulds (2, 3) are folded together to produce a finished product.

Abstract: A method of forming a concrete column capital using a flexible tension membrane material in place of the traditional rigid panels currently used for this purpose, is described. A flexible tension membrane material is attached to an opening in a panelized flat slab formwork deck located directly above a pre-existing concrete column. The membrane forms a bag-like container which contains and supports the wet concrete, and serves to form a column capital between the column and the flat slab above. Also disclosed are methods for anchoring the flexible tension membrane capital form to a panelized flat slab formwork deck.

Abstract: A concrete forming apparatus for use in construction of buildings having poured concrete floors spanning between two adjacent supports at a desired height is disclosed. The apparatus includes a frame having extensible strut members extending capable of temporarily fixing the height of the frame, supports for supporting and maneuvering the frame and rollers for rolling the frame along as the frame is flown from under the concrete floor up onto the concrete floor. The supports include a first trucking device adapted to engage the frame for raising the frame from a rest position whereby the frame is spaced above a floor surface to a pouring position whereby the upper deck is substantially at the desired height and for rolling the frame to a desired location. The supports further include a support device for supporting the frame while in the pouring position during the pouring and curing of the concrete floor having means for finely adjusting the height of the frame prior to the pouring of the concrete.

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: There is provided a modular assembly for poured concrete forming, including a plurality of interconnecting rigid panel members having a rear portion and front facing for contact with poured concrete to form a mold surface. The rear portion of the panel members provides at least two flanges extending generally rearwardly of the front facing, each of the flanges being longitudinally disposed respectively adjacent each of at least two opposed terminal edges of the panel members. Adjacent the front facing of the panel members, a stepped portion is provided at one of the terminal edges of the panels, and a corresponding protruding edge portion is provided at the other of its terminal edges thereof for intimate engagement with the stepped portion of an abutting panel member. The flanges of the panels each provides a mating surface for abutment in intimate contact with an adjacent flange of an abutting panel member.

Abstract: A molding device includes at least two comonent form boards 12,13 and a wedge-shaped spacer board 14 between them. An operating mechanism is associated with the form boards and the spacer, and moves them relative to one another. The operating mechanism includes at least one rack member 18, and at least one lever 26 connected with a pawl which swings about an axis eccentric with the axis of the lever. The pawl 28 engages with the rack and moves the rack forward when the lever is operated.

Abstract: An apparatus for moulding prefabricated curved concrete sections for use in the construction of arched or vaulted structures comprises a curved, upwardly convex mould made up of a series of reusable substantially flat mould plates pivotally supported by vertical pillars of adjustable height. The mould plates are hingedly connected to each other such that the angle of each plate to the adjacent plate is adjustable. The spacing between the vertical pillars is also adjustable, so that the mould plates provide a polygonal mould surface adjustable for moulding prefabricated concrete sections of different curvatures.

Abstract: The invention relates to a sliding process for producing concrete structure walls and a sliding shuttering means for erecting or installing monolithic block brackets, praticularly in the case of annular structures. In order to permit a continuous installation of block brackets in the case of a favorable force transfer between the structure wall and the sliding shuttering, the invention provides for the integration into the sliding shuttering of shuttering forms which are substantially complimentary to the block brackets to be installed. In height regions without block brackets, the shuttering form is terminated in aligned manner on the wall side of the structure and is opened on reaching the height level of the block bracket to be installed. After providing the block bracket, on raising the sliding shuttering, the shuttering form is again closed at the top height level of the block bracket.

Abstract: Apparatus for nest-casting of generally large elements formed of multiple angular surfaces including a side forming element of concrete useful as a mold form together with a spaced repositioned element mounted also as a side forming element for forming therebetween another side forming element of concrete. Successive operations of cast forming and repositioning the side forming element provide new cast forming structures. Also, the repositioned side forming element is essentially constructed and arranged from an assemblage of interchangeable modular structural components some of which are hingedly connected, adjustable in length, and demountable from the assemblage. Heater elements and vibrating energy sources may be severally applied to the apparatus for compaction of the cast material and accelerating the cast process.

Abstract: An apparatus for forming a multisided upright concrete wall with inner and outer form set-ups including an arrangement for stripping said inner form set-up which has a multisided form wall from the cast concrete entirely which comprises at least one wedge means dividing at least one side of the form wall into two portions and wedged in between the two portions in a first direction during casting, and means for moving the wedge means in a second direction opposite to the first direction after casting and bringing the two portions to be nearer relative to one another, whereby the inner form set-up contracts and therefore entirely is spaced apart from the cast concrete.

Abstract: A combined structural wall and concrete form system, and form bracket apparatus are provided in which a wall frame acts as the side walls of a poured concrete form, while supporting the form in place. A plurality of brackets are transversely attached to the wall frame adjacent the position of the column form to support form ties for locking the remaining form walls in place to complete a concrete column form and structural wall combination. The header of the wall frame portion acts as the bottom wall of a concrete beam form, while the same brackets as used for the column form can be attached along the top portion of the wall frame for locking beam forms and form ties in place to support the side walls of the concrete beam form. A top bracket formed with angle iron and straps supports the top portion of the side walls of the beam form.

Abstract: In order to provide a form of foundation on which light-weight shuttering may be erected prior to pouring the concrete into the foundation, there is provided a method of forming a foundation for an excavated construction, comprising excavating to a predetermined depth, arranging pre-formed footing elements 2 in a required configuration on the base of the excavation 1, the said footing elements 2 having upper surfaces with means for locating shuttering 3, 4 for walls to be erected on the foundation, the footing elements also being adapted to receive reinforcing bars 5, 5a for the foundation and/or the walls, and subsequently pouring a concrete mix into the excavation to bond substantially monolithically with the footing elements. The footing elements need considerable strength, and they are preferably pre-formed in an open construction of concrete or a light-weight aggregate. The invention further includes footing elements as set forth above, and foundations made by the method.

Abstract: The method of battery molding metal-reinforced panels of matrix forming materials like, for example, concrete is improved by the use, as reinforcement for each panel, of a stratiform and biplanar structure formed of two spaced coextensive metal sheets in a parallel and mutually supporting arrangement. Preferably, at least one sheet has a multiplicity of perforations as well as a multiplicity of protrusions. The reinforcements are provided with partitioning layers and stacked in the cavity of a molding box. Upon casting and setting of the concrete or the like material into the cavity compartments metal-reinforced panels are obtained in which the biplanar reinforcement extends substantially through the panel. The tiltable molding apparatus for use in battery-molding of the panels includes a molding box in combination with at least one fluid-cushion or fluid-bag capable of varying its outer shape in response to the amount of fluid within said cushion.

Abstract: In a formwork system frames are mounted between horizontal supports. The support means on the frames are offset relative to the horizontal axis so that the inversion of the frames enables the level of the upper surface thereof to be adjusted. Thus the same components can be used to make a formwork for fine finish concrete or standard finish. In an alternative embodiment the support means on the horizontal support is offset so that the adjustment can be effected by reversing the support.

Abstract: A floor-ceiling system for multi-story buildings which utilizes a bottom membrane having significant tensile strength supported on the building frame, such membrane being either cast in place and supported by shoring or prefabricated and self-supported, with void-producing duct forms regularly arranged and supported on the membrane, and a poured-in-place plastic material covering the membrane and duct forms to create structural elements alternating with the duct forms to form a substantially finished floor-ceiling system when the plastic material cures. The duct forms may be provided with access openings to the floor or ceiling or with lateral access openings interconnecting each other. The duct forms may be left-in-place forms or inflatable tubes removed when deflated after the material cures. Finishing materials for the floor or ceiling such as carpeting or acoustical tile may be secured directly to the essentially planar bottom or top surface of the system.

Abstract: A method of building construction which utilizes prefabricated floor elements and cast in situ support elements therefor. Forms are erected at horizontally spaced locations with each form defining a vertical support section and at least one horizontal support section. A prefabricated floor element is positioned on the horizontal support sections of the forms with the floor element partially spanning the horizontal distance between the vertical support sections of the forms. Concrete is then poured into the forms and, after setting, forms a support element having a vertical portion and at least one horizontal portion with the horizontal portion forming a rigid connection with the prefabricated floor element. The cast in situ support elements can be a wall, column or the like. After setting, the forms are removed and the process repeated in a horizontal and/or vertical dimension.