Abstract: An arrangement for casting concrete walls, comprising a beam system (1,50), which is capable to carry two form halves (2,3,51,52), between which concrete is to be poured. According to the invention a guide pipe (13,56) is located between the form halves and can be moved and preferably be locked relative to and at the beam system (1,50). The guide pipe (13,56) has a length corresponding to at least 1.5 times the height of the form halves (2,3,51,52).

Abstract: A concrete placing apparatus comprises jacks arranged in line along a wall to be erected, and U-shaped frames mounted on these jacks and connected with each other by scaffolds positioned along and on both sides of the line of arrangement of the jacks. The apparatus also includes driving carriages disposed on the scaffolds for movement therealong. Each carriage carries a feed hopper, a moulding board, and a concrete compacting means. According to the invention at least one of the moulding boards is provided with a drive for moving it in the direction transverse to the line of arrangement of the jacks. This drive is connected with the moulding board by means of a rod. The concrete compacting means is constructed in the form of a vibrating chute positioned under the feed hopper and above the moulding board and provided with a vibrating means for oscillating this chute along the direction of movement of the moulding board.

Abstract: A reinforced elongated concrete slab is progressively formed on longitudinal supports following the installation of the supports by mounting carriages for movement along the length of the supports, providing the carriages with a leading platform portion to facilitate construction of a metal rod reinforcement core spanning the supports and a trailing slab forming platform.

Abstract: A beam clamp for securing a concrete form in forming beams, lintels, etc. having a pair of spaced apart legs secured together by a cross bar that permits one leg to pivot toward and away from the other leg and a pivoted lever operating as a cam for pivoting the first leg when mounting and dismantling the beam clamp from a form after the concrete has been poured and set.

Abstract: A scaffold is provided for poured concrete walls and forms which have a plurality of prefabricated form panels interconnected in an end-to-end fashion and are generally arranged in two opposing rows. Vertically spaced tie bars extend transversely between the opposing rows of form panels at each juncture thereof, and laterally interconnect the same. The scaffold comprises a rigid support arm member having an inward end detachably connected with one of the tie bars. The support arm extends substantially horizontally from the form panels and the outward end thereof is connected with the outer end of an angle brace member. The angle brace is positioned at an acute angle to the support arm, and includes an inward end which is shaped for detachable connection with another one of the tie bars for selectively retaining the support arm in a generally, substantially horizontal orientation.

Abstract: A structure for supporting floor-molding forms in a multi-story building, including a truss that supports the forms and four telescoping leg units with upper ends pivotally connected to the truss, for supporting the entire weight of the truss on the previously-cast floor. The leg units are pivoted and telescoped out until the lower end of each leg unit lies on an area of the floor which is adjacent to a column or load-bearing wall of the building, within the 45.degree. shear plane lying about the column or wall, so that the weight of the truss and load thereon is transferred directly to the columns or walls to thereby eliminate heavy loading of the already-formed floor.

Abstract: A climbing shuttering device comprising a panel or series of panels having a support structure and means for successively raising the panel to define the surface of successive superimposed layers of a cast structure, in which the panel is connected to a main frame linked by an upright member to a lower skid attachable to the hardened lower part of the structure being cast by anchoring elements embedded in the structure during casting. The skid is pivoted to the lower end of the upright member and also connected thereto by a linear actuator the line of action of which is spaced from the pivot so that when the skid is connected to the structure being cast it can tilt the panel, upon operation of the actuator, to swing it right away from the surface of the structure previously cast while it is being elevated to a new position for a subsequent casting stage.

Abstract: A method for guiding slip-forms in the casting of concrete structures where use is made of a rigid slip-form which is repeatedly lifted first at that side of the concrete structure being cast from which the slip-form is to be guided away, such that the slip-form when being lifted is shifted towards the opposite side where, in subsequent operations, it is repeatedly lifted to the same level as it was previously caused to occupy at the side from which the slip-form is to be guided away.

Abstract: The invention relates to a method for casting of concrete structures by means of moulds disposed at two opposite sides of the structure to be cast. The moulds are pressed against the concrete structure by the legs of a yoke construction which is arranged to be successively lifted by jacks cooperating with jack rods. The legs of the yoke construction are caused during lifting to slide directly or indirectly against the jack rods which are positioned between the legs of the yoke construction and the moulds.

Abstract: An elongated elevated box girder and roadway structure is constructed in a number of individual elongated sections with the support structure and formwork being reused, in turn, for each section. Each section is constructed in a number of stages. Initially, a support structure is built up from grade or is mounted on permanent upright members of the structure being formed, such as piers or abutments. Formwork for the bottom slab and the upright outside webs of the box girders are placed upon the support structure. Concrete is poured into the formwork for the bottom slab and webs and, after being allowed to set for a given period, and posttensioned, if necessary, the formwork is stripped and the support structure is removed. The support structure and formwork are then moved and set up for the next section to be constructed. The roadway slab includes the top slab of the box girder and cantilever sections extending laterally outwardly from each side of the top slab.

Abstract: An adjustable beam clamp for securing a concrete form for the pouring of concrete a beam or lintel that does not require the use of fasteners for securing the form to the wall having a pair of legs engaging the boards that constitute the concrete form. One leg is pivoted to permit the clamp to be expanded when slipping the legs into position over the boards. A threaded rod extends from one leg to the other with a wing nut to draw the two legs tightly together against the boards. Secured to the lower side of the rod is a pair of angle bars which form a downwardly extending slot for receiving the top edges of the boards upon which the clamp rests. A bracket is mounted on the upper end of the one of the legs for receiving a 2 .times. 4 beam in order to align the clamps along the wall.

Abstract: This invention relates to an arrangement for projecting cantilever sections of multi-sectional bridge supporting structures of steel or prestressed concrete forming the superstructure of the bridge which is supported on bridge piles. The arrangement includes at least one traveling auxiliary beam movably carried on and arranged above the superstructure for spanning between superstructure sections. Two concreting scaffolds each comprising a supporting part having crossbeams and rollers are arranged above the superstructure and carry a platform which is arranged below the superstructure for carrying casings to extend the projecting superstructure sections. A transport device is movably carried on the auxiliary beam and supports the concreting scaffolds for transport between superstructure sections and from the end of a completed section to a bridge pile for beginning construction of a new section.

Abstract: An apparatus for the sequential production of concrete sections of a superstructure spanning a plurality of piers comprises a main girder positioned above a respective one of the piers and advanceable from pier to pier. A concrete form is carried by the girder for producing portions of each superstructure section, the concrete forms being movable along the girder. The main girder is supported on previously completed portions of the superstructure and can be advanced thereon by means of an auxiliary support in the center of the girder, two main supports positionable rearwardly of the auxiliary support and a third main support positionable forwardly of the auxiliary support. The main supports are in thrust and stress force bearing connection with the main girder and the main supports are movable along the girder in the longitudinal direction. The main supports may be retracted and lowered for vertically moving the main girder together with the concrete form carried thereby and any concrete therein.

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: Apparatus for vertically adjusting forms used for constructing concrete walls poured in several horizontal segments comprises a jack and means for supporting the jack from a pair of adjacent she-bolts previously installed near the top of a previously poured wall segment. The supporting means includes a pair of hangers adapted for hanging from the she-bolts and a support member connected between lower portions of the hangers. For horizontal adjustment the jack is preferably mounted on a plate which is slidable along the support member and which may be clampable thereto. Lower portions of the concrete forms are modified by installation of headers and bearing plates to receive the jacking forces. In the preferred embodiment the jack supporting member is about as long as the spacing between adjacent she-bolts, or about two feet long. In a first variation the support member is constructed to be shorter, the hangers being inclined rather than vertical, and the jack being fixed to the support member.

Abstract: A scaffolding assembly is made up of independent units each of which is fitted with inside and outside shuttering panels. The assembly is particularly suitable for in situ casting of walls in reinforced concrete, in successive layers which may vary in their inclination to the vertical. Each unit includes a support frame which is attached to one surface of the wall in progress and is fitted with one shuttering panel and a first assembly of catwalks. At its upper end it has a cantilever which overhangs the top of the wall, from which is suspended a movable frame substantially parallel to the support frame. The position of the movable frame on the cantilever is adjustable, to vary its distance from the support frame. The movable frame is fitted with the other shuttering panel and with a second catwalk assembly. A lifting system on the support frame co-operates with attachments on the wall to raise the unit.

Abstract: Method and means for supporting an elevated concrete wall panel form, wherein a bolt member is removably inserted through a first concrete wall panel to extent horizontally therethrough and project axially from opposite sides thereof, whereby a wall of a form for a second concrete wall panel in superposed relation to the first panel may be seated on one projecting end of the bolt member and the bolt member is rendered accessible from its opposite end, and the seated form wall is secured between the first wall panel and a retaining member projecting laterally from said one end of the bolt member, the retaining member being mounted on the bolt member for disposition permitting withdrawal of the bolt member through the first wall panel and from said opposite end of the bolt member after forming a second wall panel.

Abstract: In an apparatus for constructing high-rising, poured concrete walls, pairs of spaced-apart, upright supports are preliminarily mounted on a foundation and then detachably attached to both sides of at least a partially hardened level of concrete wall and at intervals along the length of the wall for repeated, upward, step-wise use as the wall is being formed; a plurality of carriages are mounted on adjacent supports along both sides of the wall for continuous upward movement as the wall is being cast, and adjustable concrete shaping assemblies are mounted on the carriages. Each assembly opposing a similar assembly to define a continuous mold into which new concrete is poured on top of previously poured concrete to form the wall.

Abstract: Apparatus for moulding inclined, free-standing hollow columns of concrete by means of sliding formwork is provided. Initially, there is formed a base structure, and a bottom section of the column to be formed is anchored thereto. In the bottom section of the column is positioned a combined support- and guiding means which is displaceably positioned firmly against the inside wall of the column and which furthermore is liftably arranged, in a known fashion such as by being biased to the moulded column section by means of lift-jacks or the like. The support- and guiding means may be forcibly adjustable in the lateral direction during the continuous moulding of the column to control and if necessary adjust the direction of the formwork and thereby the column wall during the moulding of the same.

Abstract: A method of progressively constructing a wall of cementitious material, including the steps of supporting a formwork support structure on a lower foundation, or completed wall section, by means of hydraulic jacks each including a hydraulic ram assembly carrying the formwork support structure and adapted to climb up a vertically extending jack tube, raising said formwork support structure by said jacks to a higher pouring position, supporting said formwork support structure on the lower foundation, or wall section, by auxiliary support means, raising the jack tubes for each jack through its associated ram assembly, moving a formwork section on the outside of the wall toward a formwork section on the inside of said wall to provide a cavity for the receipt of cementitious material, pouring a quantity of said material into said space between said formwork sections, the lower foundation, or completed wall section, and the lower ends of the jack tubes, allowing said cementitious material to solidify, and moving the

Abstract: A process and portable apparatus for forming individual or multiple reinforced concrete, hollow core units of a modular building structure in interconnected side by side and/or high rise relationship which apparatus may be sufficiently collapsed to allow for easy removal from the formed and cured hollow core unit to again be used to form additional subsequent, interconnected, hollow core units of the building structure.

Abstract: Form positioning apparatus is disclosed which maintains flat forms in place for continuously pouring of concrete walled structures. The apparatus utilizes a jacking I beam upon which are positioned a pair of moving beams carried along the flange of the I beam by rollers and each of which supports a compression beam actuated through pivoted levers to secure the flat form panel against the opposite flange of the I beam. A series of jacking dogs cooperating with a jack and ratchet move and lock the moving beam along the jacking beam. Beam deflecting means operating through the moving beams deflect the jacking beam to the required wall curvature.

Abstract: A concreting rig for use in construction by the cantilever method of an elevated, elongated civil engineering work, such as a bridge, elevated road, roof or the like, by in situ concreting longitudinally consecutive sections of the work with the rig overhanging beyond the already completed portion of the work, comprises a rigid structural frame which is longitudinally pressed against the already completed portion of the work, by means of tensioned prestressing members. The rig bears on the already completed work portion by way of at least three abutment devices each of which engages with a complementarily-shaped locating print in the completed work portion, means being provided for predetermining the position of each locating print in dependence upon the geometric characteristics of the work and the position therein, of the section to be concreted.

Abstract: There is disclosed apparatus for the sectional cantilever construction of bridge girder systems of reinforced or prestressed concrete having a superstructure comprising a closed box cross-section and superimposed laterally overhanging bridge decking, said apparatus comprising travel devices for abutting against an already finished part of the bridge superstructure at whose position fixed support members, e.g.

Abstract: A substantially spherical shaped structure constructed of reinforced concrete poured in a plurality of courses, each course consisting of a horizontal substantially annular band extending completely around the structure. A series of forms are shaped and positioned so as to create two adjacent concentric annular arcuate surfaces, thus forming an inner and an outer wall between which a suitable structural material, such as concrete, in a fluid state may be poured and allowed to harden. Additional forms, substantially vertically above and arcuately continuous with the previous surfaces, are fastened to the first series of forms and again a suitable structural material is poured between the forms and allowed to harden above the previously hardened band. This procedure is repeated until the desired spherically shaped structure has been obtained.

Abstract: The upright annular concrete wall of a silo, swimming pool, or like structure of large diameter is poured in a slip form suspended from three columns for best stability of the slip form arrangement. A work platform is mounted on beams which radially connect the form with a coaxial, inner, annular frame. Carriers are interposed between the columns and the frame in such a manner that six approximately equally distributed circumferential portions of the frame are connected to the columns, so that the unsupported spans of the frame between connections to the carriers are only one half of what they would be if the frame were directly attached to the columns.

Abstract: The invention relates to a device for raising a sliding shuttering designed to be used for the continuous production of silos, water towers, etc.The device consists of two cases, coaxial with a slide bar, separated from one another by a jack also coaxial of which each of the two parts in respectively integral with one of the cases, each case comprising locking jaws in its interior which, alternating from one case to the other, engage with a slide bar, the locked case serving as a support point for the case in movement and reciprocally, the pressure of the compressed high-pressure fluid of the jack for raising the case joined to the frame, supporting the shuttering, which device is characterised in that the means for raising the other case is provided by a low pressure fluid which acts when the high-pressure fluid is decompressed, which enables an efficient device to be obtained and avoid even a slight backward movement of the shuttering.