DE3430539A1 - Shuttering element for end faces of concrete steps - Google Patents

Abstract

In order to provide shuttering for end faces of concrete steps, a sheet-metal shuttering which can be displaced in a telescoping manner and is clamped on the wall shuttering or string shuttering of the concrete step is provided. The shuttering element (Figure 1) comprises two C-profiled metal sheets (1, 2) which have in each case one clamping plate (5) at their extremities, which clamping plates are fastened to the hinges (7) on the profiled metal sheets (1) or (2) so as to be capable of rotation through up to 80 DEG . Two articulation means (6) are fitted on the two clamping plates (5), which means retain the connecting tubes (3, 4), and a rapid-clamping device (10) is mounted in the push-in region of said connecting tubes. Retaining pins (9) which fix the shuttering element in the adjusted position are placed on the outer surfaces of the clamping plates (5). <IMAGE>

Description

= Formwork element for front surfaces of concrete stairs

The manufacture of concrete stairs in building construction takes place, the state of the Technique accordingly, by making wooden formwork according to the construction drawings cut and put together to form staircase formwork constructions.

The wooden formwork parts for concrete stairs can only be reused to a limited extent, as the formwork timber becomes unusable after a short period of use due to nailing and concrete water will.

That is why shuttering work for concrete stairs is made using wooden shuttering not only labor-intensive, but also the need for sawn timber is constant new cuts relatively high.

It was the object of the invention, the amount of work and the need for formwork To reduce the work of shuttering the stairs, this object is achieved according to the invention solved in that the wooden formwork in the face area of the concrete stairs a reusable metal formwork is replaced.

The formwork element for front surfaces of concrete stairs is a Construction width of the stairs sliding metal formwork element, which Is not subject to wear and tear during use and as often as required for concrete stair formwork can be used, the formwork element for concrete stair front faces has as a constructive suggestion on the following features: Telescopic Extendable end face formwork sheets, each with a clamping plate at both head ends own.

These lateral clamping plates can be moved in a hinge-like manner and up adjustable to an angle of 800, so that stair curves can also be formed without any problems can be.

For better fixation of the formwork to the wall and stringer are Provide the lateral clamping plates with holding pins. Between the lateral clamping plates a two-part connecting pipe is fastened in an articulated manner and with a quick-release device ver -bundes quick release devices were made in various embodiments tried. The file drawing in FIG. 1 shows a formwork element as an execution cover for front surfaces of concrete stairs in perspective representation.

The formwork element consists of its effective formwork surface Fig. 1 made of two metal profile sheets 1 and 2 in standard stair step height, with the Base plate 1 designed as a C-profile, the length of the minimum staircase width is equivalent to. The adjustable sliding profile sheet is in this base sheet profile 1 2 inserted appropriately and can be pulled out to the required stair width will.

For fixing the lateral clamping plates 5 on the wall or cheek formwork the quick-clamping device 10, which by means of the connecting pipes 3 & 4 are attached to the clamping plates 5 with the joints 6, by stopping the clamping wedge 8 pressed in such a way that the lateral clamping plates 5 with the holding mandrels 9 firmly rest on the wall or cheek formwork and thereby reduce the vibration pressure when concreting withstand.

Even after the concreting process has been completed, the advantage of the Formwork elements for the front of the concrete stairs areas by the fact that the Stripping process is shortened significantly. By releasing the quick clamping device The entire formwork element can be used for concrete surface formwork as a unit removed and made available for immediate reuse.

Claims (5)

Claims: 1. Formwork element for front surfaces of concrete stairs Made of metal, d u r c h e k e n n z e 1 c h n e t that the telescopic extendable Metal profile sheets (1,2) designed as c-profiles, the effective formwork surface Form in the width of the stairs and the standard height of the stairs, each with a clamping plate (5) through Hinges (7) is connected to the profile sheets (1,2) and by joints (6) the Hold the connecting pipes (3, 4), a quick-release device in the middle of the slide-in area (10) is attached. 2. Formwork element according to claim 1, characterized in that the outer surfaces of the clamping plates (5) are provided with holding pins (9), 3, formwork element according to claim 1 and 2, characterized in that the connecting pipe 3 is offset Longitudinal slots are provided in which the clamping part (8) of the quick release device (10) is posted. 4. Formwork element according to claim 1 and 2, characterized in that that the connecting pipe (3) is replaced by a threaded rod with a clamping nut, which then serves as a quick release device (10). 5. Formwork element according to claim 1 and 2, characterized in that that the connecting pipes (3, 4) by a stepless quick-release device (10) are connected.