Abstract: A slab formwork system is disclosed having a plurality of formwork elements which have first hook members at their lower side for establishing a hook connection with second hook members provided at upper end sections of vertical supports. The first and second hook members are designed to establish the hook connection, on the one hand, when the formwork elements and the vertical supports extend parallel or obliquely to one another and such that pivoting of a formwork element is possible, on the other hand, while maintaining the hook connection, into such a position in which the formwork element and the vertical supports include an angle of approximately 90°. The formwork element can be coupled, prior to the pivoting, with a railing member extending substantially perpendicular to the formwork element. A method for the preparation of a slab formwork system of this type is also disclosed.

Abstract: The invention relates to dismantlable scaffolding comprising accessible platforms on a plurality of levels and a multitude of vertical supports carrying said platforms. Said vertical supports preferably consist of several sections which can be fixed one on top of the other, are arranged at a distance from each other, and are preferably connected by means of platform bars at predetermined vertical distances. Said supports carry perforated anchor plates at predetermined vertical distances. Connecting railing elements can be applied to adjacent vertical supports. In order to apply at least one railing element above a platform, at least the highest railing elements of a level can be applied to the associated perforated anchor plate by means of a railing adapter element. When applied to the perforated anchor plate, said adapter carries a railing holding element above the anchor plate.

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: A girder element (1; 21; 31; 41; 53-57) for concrete formwork comprises a girder (4) for receiving external forces (10), a tension rod (5) extending behind the girder (4) and at least one lengthwise adjustable tensioning device that is interposed between the girder (4) and the tie rod (5), the local distance between the girder (4) and the tie rod (5) being adjustable by means of said tensioning device. The invention is characterized in that the lengthwise adjustable tensioning device is configured as a lengthwise adjustable compensation device (6; 6a, 6b) which is motor driven to adjust the length of the compensation device (6; 6a, 6b). A measuring device is used to determine the position (x) of the girder (4) in the area of the compensation device (6; 6a, 6b) relative to a desired position (xs). A control device (12) is used to adjust the length (L) of the compensation device (6; 6a, 6b) depending on the position (x) of the girder (4).

Abstract: A floor table (1) of a concrete mould for producing a concrete floor (2), comprising at least one front (18, 19) and one rear holder (23) for fixing at least one front (11) and at least one rear ligament (12) of a crane harness (9), characterized in that when the floor table (1) is in a disengaged and retracted state underneath a recently hardened concrete floor (2), it is possible to have access to the holders (18, 18 23) which are used to fix the ligaments (11, 12). The inventive floor table can be drawn out from the floor and displaced with less danger to the workers and requiring less effort in comparison with conventional floor tables.

Abstract: A turnbuckle device (11) for clamping concrete shell elements (1, 2), having two claws (12, 13), which may be displaced toward one another, and a wedge (18) or the like, the claws (12, 13) having legs (14, 20; 41), the legs (14, 20; 41) having contact surfaces (30, 31; 43) extending in a plane to rest on struts (7, 21; 50) of frames (5, 6) of concrete shell elements (1, 2), the legs (14, 20; 41) having lugs on their free ends (16, 22; 40), which are capable of engaging behind depressions (9, 15) in frames (5, 6) of concrete shell elements (1, 2), is characterized in that an extension (17; 42; 44; 45) is provided on a lug (16; 40) of a leg (14; 41), which extends away from the contact surface (30, 43) at least partially perpendicularly to the plane of the contact surface (30; 43) of the leg (14; 41). The mounting of the turnbuckle device is thus made easier.

Abstract: The invention relates to a ceiling formwork system comprising several formwork elements, the bottom face of which is provided with supports that can be coupled to heads of vertical props. At least some areas of the cross section of said supports are embodied in a C-shaped manner, with two legs extending from a basic section. One of the legs is designed as a supporting surface that is to rest on a head of a vertical prop while the head of a vertical prop is provided with fixing elements which engage into one respective recess of a supporting surface. Said recess is configured so as to selectively couple the support to the vertical prop in two directions that are offset relative to each other by 90° at the end of the supporting surface which faces away from the basic section.

Abstract: The invention relates to a slab formwork system comprising a plurality of formwork elements (98) which have on their underside girders (2) which can be coupled to heads (28) of vertical supports (90), in which slab formwork system the head of a vertical support has a lifting lock (44-51; 87) fixing a girder of a formwork element in the vertical direction. In addition, the head of a vertical support has fixing elements (52-66) which prevent a movement of the girder in its longitudinal direction.

Abstract: The invention relates to a ceiling formwork system comprising several grid elements, each of which is composed of a plurality of parallel longitudinal beams and at least one transversal beam that can be mounted or placed on vertical supports and extends perpendicular to the longitudinal beams. The longitudinal and transversal beams of the grid elements are rigidly interconnected. Standard grid elements are provided with two transversal beams in the opposite terminal areas of the longitudinal beams while transversal compensating grid elements are fitted with two transversal beams which are offset towards the inside in relation to the standard grid elements.

Abstract: The invention relates to scaffold steps, with two separate side pieces (11) and a plurality of separate step elements (13, 13?, 13?), which can be detachably coupled to each other and to the side pieces.

Abstract: The invention relates to a lowering device (10) for the construction industry, which comprises a support structure. The lowering device comprises a plate (17) holding a locking mechanism (16) and blocking or releasing the mobility of bolts (12, 13). The bolts (12, 13) are firmly linked with a support structure and are fastened on the locking mechanism (16) in a controlled manner to such an extent that, in a first position, the support structure linked with the lowering device (10) is lifted and, in a second position of the locking mechanism, the support structure linked therewith is lowered as much as the locking mechanism permits.

Abstract: The invention relates to industrial scaffolding comprising vertical supports, which can be interconnected by means of horizontal bars. Plates, which extend on a horizontal plane, can be hooked onto the bars to create an accessible working surface. When the plates are fitted, edge areas of the latter overhang the base body of the plates in such a way that a bar running parallel to an edge area is partially covered by said edge area.

Abstract: The invention relates to a formwork system which comprises formwork elements having opposite formwork interior surfaces, which can be interlinked at a distance to one another by means of formwork ties. Said formwork ties are constituted of a bolt element and two locking elements that are configured so as to be coupled to the bolt elements in the two distal areas thereof facing away from each other and that are adapted to transmit tensile forces from the formwork elements onto the bolt element. The formwork system is characterized in that the locking elements comprise coupling elements for transmitting pressure forces from the formwork elements onto the bolt element.

Abstract: The invention relates to a slab formwork system having a plurality of formwork elements which have first hook members at their lower side for establishing a hook connection with second hook members provided at upper end sections of vertical supports. The first and second hook members are designed to establish the hook connection, on the one hand, when the formwork elements and the vertical supports extend parallel or obliquely to one another and such that pivoting of a formwork element is possible, on the other hand, while maintaining the hook connection, into such a position in which the formwork element and the vertical supports include an angle of approximately 90°. The formwork element can be coupled, prior to the pivoting, with a railing member extending substantially perpendicular to the formwork element. The invention furthermore relates to a method for the preparation of a slab formwork system of this type.

Abstract: The invention concerns a formwork system (1) for forming a transition of reinforcement (8) between a concrete component and a further concrete component located adjacent thereto in a connecting direction (14), comprising two formwork elements (2, 3) and a central element (5), wherein the central element is disposed between the formwork elements in the region of one end of the formwork elements, and wherein elastic sealing lips (7) are disposed each between the formwork elements (2, 3) and the central element (5), which is characterized in that the formwork system comprises mounting positions (40–43) for spacers (6; 32–39), wherein one mounting position (41, 42) each is provided on the two outer sides, of the central element, facing the formwork elements, and one mounting position (40, 43) each is provided on the inner sides of the formwork elements opposite to these outer sides of the central element, several spacers can be mounted on top of each other at each mounting position, at least one spacer is mounted

Abstract: A formwork system comprises an outer formwork, an inner formwork and an opening box-out. The opening box-out is rigidly connected to the outer formwork. The opening box-out can be reduced or enlarged in size by hinging a movable frame to its rigid inner frame. In the erected state of the formwork system, the opening box-out projects into an opening of the inner formwork. The opening of the inner formwork corresponds to the size of the recess to be formed on a concrete body. The inventive formwork system permits concreting of different wall thicknesses without changing the formwork system. Fitting of the opening box-out into a double-headed formwork can be omitted. Recess sizes and contours can be made more exact since the adjustable opening box-out is pressed on the inner edge of the opening in the second formwork shell.

Abstract: The invention relates to a scaffold with vertical supports arranged spaced apart next to one another and/or behind one another, with horizontal carriers arranged between adjacent vertical supports and with scaffold decks which releasably lie at their end regions on oppositely disposed horizontal carriers another and preferably extending parallel to one another, preferably by means of hooks,.

Abstract: A compensating element (23) is permanently connected to a first formwork element (21) and a second formwork element (22) wherein the compensating element (23) has openings formed like elongated holes on the side along its axial direction through each of which one tube penetrates which terminates in one housing each on both sides of the compensating element (23). The housings can be displaced along the tube and be moved via a rod assembly. When the compensating element (23) is displaced into a formwork dismantling position, the formwork elements (21, 22) and the compensating element (23) are released from the concrete surface and the entire device can be moved (FIG. 2).

Abstract: The invention relates to a stage, comprising elements, which may be assembled and disassembled from individual pieces, as part of a sub-structure with telescopic pieces (14, 15) and bars (11, 12, 13) fixed thereto, at various angles to the horizontal, to which may be fixed stepped elements for the attachment of superstructure pieces such a seats and railings. Said bars (11, 12, 13), may be pivoted about a pivot point (23, 24, 25), in the region of a first end (16, 17, 18) of a bar (11, 12, 13), in a manner independent of the angle to the horizontal. Each individual bar (11, 12, 13) comprises a first attachment point for stepped elements and the pivot point (23, 24, 25) of a bar (11, 12, 13) is either congruent with the first attachment point (26) or it is immediately adjacent to the pivot point (23, 24, 25).

Abstract: A turnbuckle device (10) for clamping concrete shell elements (35, 36) comprises stationary claws (14, 15) and pivotable claws (24, 25) which can be clamped with the stationary claws (14, 15) via a wedge (28) on two neighboring concrete shell elements (35, 36) in that the claws (14, 15, 24, 25) engage in profilings on the frame of the concrete shell elements (35, 36). The stationary claws (14, 15) have archings (18) which engage behind transverse struts (34) or longitudinal struts (33) of a concrete shell element (36). The turnbuckle device (10) is displaceably held on the concrete shell element (36) via the archings (18). If the claws (14, 15, 24, 25) are within the concrete shell element (36), the turnbuckle device (10) can be displaced on the concrete shell element (36) in a longitudinal direction of the transverse strut (34 ) only that far that the turnbuckle device (10) does not project over an outer edge (39) of the concrete shell element (36).