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 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: 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 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: 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 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: 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 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).

Abstract: A dismantlable, multi-story facade scaffold is formed of at least four vertical support elements and floor plates and railing elements which are mounted thereto. An additional scaffold story is erected by coupling an additional vertical support element to an already existing one and pivotally attaching one end of a railing element thereto at a location above where the floor plate for the next story will be placed. The other end of that railing element is pivotally attached to another vertical support element. This other vertical support element is then raised, thereby pivotally moving the rail element relative to the respective vertical support element until the rail element is in a horizontal position and the vertical support element is in the vertical position. The other vertical support element is now attached to the upper end of a corresponding vertical support of the lower scaffold story.

Abstract: A hook strap comprises a transverse arm formed as a ribbon for abutment on an top flange on a formwork girder. The ends of the ribbon are provided with hook-shaped retainers for engagement below parts of a waler and tension elements for fixing the hook strap. The ribbon has a small thickness to prevent obstruction of the elements bordering the top flange and the upper surface of the top flange. The hook strap may be mounted at any location of a formwork girder or of a waler to interconnect formwork girders and/or connect formwork girders to a waler.

Abstract: A dismantlable, multi-story facade scaffold is formed of at least four vertical support elements and floor plates and railing elements which are mounted thereto. An additional scaffold story is erected by coupling an additional vertical support element to an already existing one and pivotally attaching one end of a railing element thereto at a location above where the floor plate for the next story will be placed. The other end of that railing element is pivotally attached to another vertical support element. This other vertical support element is then raised, thereby pivotally moving the rail element relative to the respective vertical support element until the rail element is in a horizontal position and the vertical support element is in the vertical position. The other vertical support element is now attached to the upper end of a corresponding vertical support of the lower scaffold story.

Abstract: The invention relates to a dismantlable facade scaffold comprising at least four vertical supports consisting of individual support elements (3, 3′, 3″) which can be separated from one another, wherein at least certain support elements (3, 3′, 3″) have attachment positions (24, 19, 20) for floor plates (14, 14′) and also for substantially horizontally extending railing elements (18, 18′). When the scaffold is erected, at least one attachment position (19, 20) of the support element (3, 3′, 3″) provided for a railing element (18, 18′) is located above a fastening position (24) of the same support element (3, 3′, 3″) provided for a base plate (14, 14′).

Abstract: The invention relates to a dismountable scaffolding with vertical struts and horizontal struts. A base plate extends between said struts and is provided with hook-shaped end fittings on each front face. Said base plate can be placed on a rail section in such a way that vertical locking or unlocking can be selectably achieved by sliding the end fitting in the direction of the rail section. Horizontal antislip locking is achieved and cancelled by raising the end fitting, thereby preventing said fitting from sliding into an inactive vertical locking position when it is in an active vertical position.

Abstract: The invention relates to a scaffolding, especially facade scaffolding, comprising vertical poles (11) located one behind the other, preferably in pairs, and interconnected at given vertical intervals by means of cross struts (12). Said vertical poles (11) consist preferably of individual elements (11′) and form carrier frames (43) with said cross struts (12). Base plates (13) are also positioned between the cross struts (12) of neighboring carrier frames (43). Diagonal poles (27) are arranged between at least some of the neighboring vertical poles (11). According to the invention scaffolding of this type is configured in such a way that at least one end of the diagonal poles (27) engages in an aperture (16) provided in the designated vertical pole (11) by means of a hook (15, 15′). Said opening lies at least essentially in the plane defined by the axes (17) of the neighboring vertical poles (11).