Abstract: Buildings are constructed using the tilt-up technique from concrete elements that have contours that are at least partially curved. The concrete elements are made by casting in molds. The molds are assembled from mold pieces selected in a kit that contains a limited set of shapes. Molds assembled differently can produce concrete elements with a large variety of contour shapes.

Abstract: Disclosed is a formwork for producing concrete products including at least one supporting beam with an axis of extension, at least one panel bendable around a transverse direction with respect to the axis and at least one adjustment device adapted to connect the panel to the beam and to vary the curvature of the panel between a flat undeformed condition and curved condition, where the outer surface is convex or, if necessary, concave, wherein the adjustment device is connected at least at one intermediate point of the panel and at least at one edge point, positioned at a lateral edge substantially parallel to the direction of curvature, in order to simultaneously move the points to vary the curvature of the outer surface of the panel.

Abstract: The present invention relates to a manufacturing process in situ of concrete towers for wind turbines which enables executing a design of concrete tower manufactured in situ by means of climbing formwork, which reduces the execution time of the concrete tower, where the invention also relates to the associated concrete tower for wind turbine.

Abstract: A pocket former may include a pocket former body, the pocket former body having an outer surface. The pocket former may further include a collapsible element, the collapsible element formed on the outer surface of the pocket former body. The collapsible element may extend radially outwardly from the pocket former body.

Abstract: A pocket former may include a pocket former body, the pocket former body having an outer surface. The pocket former may further include a collapsible element, the collapsible element formed on the outer surface of the pocket former body. The collapsible element may extend radially outwardly from the pocket former body.

Abstract: A pocket former may include a pocket former body, the pocket former body having an outer surface. The pocket former may further include a collapsible element, the collapsible element formed on the outer surface of the pocket former body. The collapsible element may extend radially outwardly from the pocket former body.

Abstract: A formwork system (10; 60), especially for tunnel construction, includes at least one support arrangement (14) for supporting at least one formwork element (16-26; 72-78). The formwork system further includes at least one concrete pump (36), a plurality of concrete supply units (42) for supply to the formwork element and at least one controller (32). On the formwork element (16-26; 72-78) and/or on the support arrangement (14) at least two pressure sensors (44; 92) are disposed at different vertical positions and are connected to the controller (32) of the formwork system, which pressure sensors (44; 92) are designed to measure the pressure acting upon the formwork elements (16-26; 72-78) at a minimum of two different heights of the formwork element, and that the controller (32) is designed to control the concrete supply units (42) individually, dependent on the signal from the pressure sensors (44; 92).

Abstract: A cast in place chimney form and installation method therefor. The cast in place form being of a relatively light weight construction and having physical and visual features that allow it to be used as a chimney cap form and to be left as an element of the finished chimney cap. The method of installation comprising the positioning of the form with relation to a step of chimney construction and the pouring of the chimney cap with the form being left in place.

Abstract: A crown installation system for forming a crown in place on a pillar in a manner that avoids the need for heavy and complicated concrete form structures. The crown installation system includes a kit for forming a crown on a pillar, such as a chimney, having a perimeter wall with an outer surface and an upper surface converging at an outer upper perimeter edge. The kit includes a plurality of form members, with each form member being adapted for forming a portion of the outer surface of the crown. Each of the form members has opposite ends and an outer face. A plurality of support members are provided for supporting the form members. Each of the support members has a front surface for pressing against a portion of the outer surface of one of the form members. A tension member is provided for holding the support members in position against the form members such that the form members are restricted from outward movement. The invention also includes a method of utilizing the kit to form a crown on a pillar.

Abstract: An apparatus and process for the manufacture of brick block, i.e. a concrete chimney or wall block, with an impressed brick grout pattern on the face thereof, comprises a mold adapted to fit a known concrete block manufacturing machine. The mold has grout bars to impress a simulated laid brick pattern onto at least one vertical face of the block, the grout bar moveable in and out from a wall of the mold by hydraulic components. The hydraulic components utilize a unique multi-piston hydraulic block.

Abstract: A spacing tool to be inserted between a form and a foundry furnace during installation of the form in the foundry furnace comprises a first longitudinally extending member to contact the foundry furnace. A second longitudinally extending member is coupled to the first member. The first and second members define opposed surfaces to contact the form and foundry furnace respectively. The second member is moveable relative to the first member to alter the distance between the opposed surfaces and set the spacing between the form and the foundry furnace. During a foundry furnace relining process, a plurality of spacing tools are used at circumferentially spaced locations to center the form within the foundry furnace.

Abstract: A pour window for a metal concrete form flexible to a predetermined arcuate shape. A window panel of a generally rectangular shape forms part of a door which is pivotally mounted at one edge thereof for movement between an open and a closed position thereof. In the open position, concrete can be poured inside assembled forms intermediate the outside edges of the form assembly. In the closed position secured to structural members of the form, the window panel conforms to the generally arcuate shape of the form to present a substantially continuous arcuate surface for the forming of curvital concrete surfaces.

Abstract: Forms for a cylindrical wall of poured concrete are made of plywood sheets nailed to horizontally-spaced beams, to which are clamped transversely arranged walers. The walers are assembled in strings and the string are in parallel spaced relationship. The walers in a string are hinged together at the sheet-facing side of the walers and at least one of two adjacent waler sections is curved. Screw assemblies are mounted in brackets located at the ends of the walers but on the sides facing away from the sheets, and are operable to push or pull the walers out of alignment so that they can be pulled or pushed into a ring shape and, in so doing, bend the sheets into generally cylindrical shapes. When the sheets are raised on end, with the beams disposed vertically they provide the inside and outside wall forms for receiving concrete, for example, poured between them to form an annular cylindrical wall for a tank or the like.

Abstract: The present invention provides for a device for adapting a formwork element, including a formwork lining and at least two formwork beams, to a given curvature of circular framework. A device includes a web engaging a space between two formwork beams and a cross-piece fixed to the web and equipped with two parallel, spaced plates which project laterally beyond the web and overlap the formwork beams in an installed position. Projecting portions are provided with mounting lugs in which a plurality of the lugs have at least one projecting portion and the lugs are arranged in two planes disposed at different spacings relative to the web.

Abstract: A mold is provided for use in forming a chimney crown on the top of a chimney shell. The mold includes four side sections and four corner sections which are assembled together to form a complete unit. Each side section and each corner section has a base for contacting a top surface of the chimney shell and a band extending downwardly from the base for contacting an outer side surface of the chimney shell. Since part of this base extends outwardly beyond the chimney shell, the chimney crown overhangs the chimney shell preferably in a cantilever manner. Each side section of the mold also has an upper leg and a lower leg extending from the base at the outer end thereof. A hook trough extends inwardly from the upper leg into the chimney crown for anchoring the mold and for carrying water to drainage holes in the corner sections of the mold. A rope may be disposed in the hook trough to act as a wick for drawing excess moisture from the chimney crown.

Abstract: A form for erecting structures having an plan shape, any generatrix and possibly changing wall thickness includes an inner form (1) and an outer form (2). Circumferentially closed support rings (5,6) are arranged horizontally spaced from the inner form as well as from the outer form. Radially aligned sleeves (35) are provided in the support rings (5,6). Threaded spindles (7,8) are slidably but fixedly held in the sleeves (35). One end of each threaded spindle (7,8) engages form carriers (11,12) which rest against the form carriers (3,4). The inclination of the form plates (3,4) or the wall thickness of the structure to be erected can thus be adjusted. Web members (13,14) are provided between the form plates (3,4) in circumferential direction of the form, the web members engaging over the form plate edges at the rear sides thereof. The web members have a support (15,16) on the surface facing the structure in the region between the side edges of the spaced-apart form plates (3,4).

Abstract: A curved concrete forming structure to provide a 1000 psf system for forming curved walls having a radium in excess of 5'. The structure includes a series of arcuately curved metallic panels secured in stacked side-by-side assembly. The improvement particularly concerns a panel which is comprised of a flexible metallic skin plate. Spaced vertically extending ribs are positioned along the length of the panel on one side thereof. The ribs and the skin plate have essentially the same vertical dimensions. A pair of vertically spaced arcuately curved angles are provided which angles have identical diameters that correspond to the diameter of the concrete wall to be poured using the concrete forming structure. The curved angles are substantially stiffer and inflexible compared to the flexible skin plate.

Abstract: A formwork assembly for a poured concrete structure includes a plurality of formwork panels and girder-like members for supporting the panels. The panels comprise a concrete surface forming sheet and laterally spaced flange-like support members on the outside surface of the panel. The panel sheet is formed of an elastically deformable material so that the panel can follow the configuration of a curved surface of the concrete structure. The support members on the panels are notched or recessed at their ends so that the aligned support members on adjoining panels form a cutout to which the girder-like member is secured.

Abstract: There is disclosed a formwork for round or polygonal constructions with a formwork face having an adjustable curvature or circumference. The formwork has a chain of booms which are spaced apart from the formwork face and are composed of individual boom portions. The boom portions can be pivoted relative to one another and can be fixed in selected angular positions when the adjustment of the formwork face is completed. The pivot axes for the boom portions are not located at the boom portions themselves but are transposed into the plane of the formwork face so that the formwork and the formwork face are adjusted in assembled condition of the chain of booms. The boom portions, which are spaced apart from the joint axes have couplings which are adapted to be detachably connected to one another and are disposed along arcs with centers of curvature on the respective joint axes. The couplings can include overlapping plates with openings through which locking keys can be inserted.

Abstract: Formwork (15) for moulding walls of reservoirs in any desired curved configuration. The formwork utilizes a flexible panel (18) having a form surface (17) on one side against which the reservoir wall may be moulded and connector means (37) on the other side for connecting adjustable bracing (36) thereto for holding the formwork in position. The bracing may be adjusted to vary the curvature of the formwork.

Abstract: The 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.

Abstract: Apparatus for erection of arcuate walls of poured concrete has one or more deformable sheathings secured to turnable supports which are movably secured to one another by composite girders having alternating rigid variable-length links and fixed-length connectors which are affixed to the supports. The angular positions of the supports are changed by changing the length of the links. Locking devices are provided to hold the links against angular movement relative to the neighboring connectors when the sheathing assumes the desired shape. The locking devices can constitute separable components or they may be permanently mounted on and/or integrated into the links and/or connectors.

Abstract: A concrete forming system for constructing small diameter concrete columns with a refractory liner on the inside of the column wall. The present invention supports the inner and outer forms for the column wall on jacking frames which travel vertically on jacking beams attached to the wall. Loads created by plastic concrete are resisted by a system of radial supports which are attached to the inner concrete shaping forms and are supported by the jacking beams and jacking frames. After a portion of the column wall is poured, the next higher portion of the concrete column wall is formed by advancing the jacking frames and the concrete shaping forms upwardly along the jacking beams and reattaching lower sections of the jacking beams at the top of the jacking beams in order to provide a continuous track. The jacking frames and forms are raised on the jacking beams after a portion of the column wall is poured and the next higher portion of the concrete column wall is to be formed.

Abstract: A slip form for walls or chimneys including opposed frames each carrying form members, the opposed frames being adjustably tied together across the wall to be poured and further positioned and braced by scissor-arms extended between adjacent frames along the same side of the wall.

Abstract: Each one of a plurality of sector-shaped form members for a reinforced concrete or postensioned roof supported by a circumscribing wall, footing, columns or the like of a large building structure has an eyebolt located near its center of gravity to permit raising and lowering the form. The forms are lifted by this eye and successively positioned with their wide ends supported by brackets fastened to the circumscribing walls, footings, or columns and supported near their narrow ends by a central staging structure. If the building structure has circular walls or columns for supporting the roof, a pivoted station at the wide end of each form member provides a work platform for access to the bracket fastening means. When all of the forms are in place, their narrower ends define an opening which is centrally located. The forms are then covered by a layer of reinforced concrete. Holes are left in the roof at each eyebolt.

Abstract: A form for pouring a conical concrete structure has a framework of obliquely inclined beams radiating from the axis of the structure in angularly offset relationship. Circumferentially elongated connecting members connect each beam to the two angularly adjacent beams. They are spaced longitudinally of the beams and sequentially increase in length in a direction away from the axis. Threaded fasteners connect the longitudinally terminal portions of each connecting member to respective connected beams. Sheeting covers the connecting members and is fastened to the members to constitute a substantially conically tapering wall extending about the axis of the form in a closed loop.

Abstract: A form for concrete which has inner and outer walls spaced apart. Each wall is formed by a plurality of vertical elements abutting each other vertically. A row of whaler lookout plates are mounted on the abutting sides of the vertical elements and support a whaler rod which holds the vertical elements together to form a wall.