DE1917026U - SPACERS FOR THE REINFORCEMENT BAR IN REINFORCED CONCRETE SLABS. - Google Patents

Description

RA.058 592 * -4.2.65

DlPL-ING. INGRISCH, WUPPERTAL-ELBERFELD wall 27/29

Wuppertal — Blberf eld j den £ o S * ebr.

Usage registration
Attorney file no * 3554

fa. ü. Reuss & Co .. Wuppertal-Elberfelä

Spacers for the reinforcement bars in reinforced concrete ceilings.

In the case of reinforced concrete ceilings, the distance between the reinforcing bars and the underside of the ceiling is of decisive importance for the strength of the latter.Therefore, it is necessary _{to arrange the reinforcement bars, Hatten Od 0} like *, at a certain distance from the ceiling formwork before the concrete is poured and ensure! that the rebars maintain their predetermined Xage even during the pouring of the concrete. For this purpose, so-called spacers are used, which can have a variety of shapes.

For securing the required distance, two embodiments of spacers have already become known ₉ which are designed as rods provided with feet, either the entire spacer or only the feet being made of plastic. These spacers are placed with their feet on the formwork and then the bottom layer of the reinforcing bars is placed across the

Spacers or pre-fabricated reinforcement meshes are placed in the appropriate alignment using these spacers placed"

The known spacers are, however, in multiple Disadvantageous regard. It turns out to be particularly annoying with them that they deal with a certain side, the one with Footed side, to be placed on the boarding must, which is why even the setting of the spacers takes a considerable amount of time · From even greater However, it is a disadvantage that the spacers in the event of a careless touch or an uneven contact Place the reinforcement bars or reinforcement meshes over which, in view of the conditions prevailing on construction sites, can hardly be avoided even with special care ^

In a known embodiment, in which plastic fumes are injected onto an iron rod at regular intervals are, the relatively expensive manufacturing process also proves to be disadvantageous. With a well-known, from a continuous plastic profile strip made spacer, in which at regular intervals from the Stripes of sweetness are squeezed out, it is inevitable that the spacer by the manufacturing process used more or less to a sheet with after outwardly directed feet is curved, making it very becomes difficult to use this spacer with its 3 feet

- 3 put on and secure against tipping over.

The innovation is based on the task of a spacer for securing a distance between reinforcing bars and shuttering, especially for reinforced concrete ceilings, to be created that is simple and easy to manufacture is cheap and in which the known spacers have disadvantages, particularly with regard to their use are avoided

The fire achieves this by the fact that the spacer is designed to be rotationally symmetrical as a rod with thickenings provided at regular intervals. By the rotationally symmetrical «training is advantageously achieved that the spacers also after a Overturning or rolling away still lie or come to lie in the same way as a spacer between the casing and the reinforcing bars, so that it is with the novel spacers, for example, it does not matter whether the reinforcement mesh is slipped or not The spacers tip over. At the same time, however, the rotationally symmetrical design also means that this is the first Setting the spacers is much easier to do, as there is a special alignment on the foot side the spacer no longer has to be made.

According to a preferred embodiment of the innovation the rod of the spacer has a circular cross-sectional

area on, while the thickeningeix polygonal cross-section own areas, so that the Verdiokungen thus for different Show angular positions »Die Verdiokungen can be designed as circular disks, which are provided with several flattenings on the circumference, dooh, according to the innovation, the formation of the thickenings as regular hexagons is preferred «

Another highlight of the innovation is the thickening each arranged on the rod at such a distance from each other that the distances between the tension rods and the reinforcement mesh «, are equal, due to the rotationally symmetrical Formation of the spacers the upwardly facing parts of the thickened areas ssum stop on the tension rods In this way it is possible in a very simple way to form spacers and reinforcing bars in such a way assign that the spacers are only loaded in the immediate vicinity of the thickenings, so dab the continuous axial rod of the spacer can be made relatively thin »

The novel spacer is explained in several exemplary embodiments with reference to the drawing, in which

3? Ig. 1 is a side view and

3? Ig * · 2 to 4 different cross-sectional shapes. the thickenings according to the in 3? ig. 1 indicated sonic plane A-A

demonstrate.

_ 5 -

The spacer consists essentially of a central one continuous rod 5 unä to this rod in regular Thickenings 6 formed at intervals, while the rod preferably has a circular cross-section, the thickenings have polygonal cross-sectional areas and are, as shown in FIGS. 2 to 4, for example designed as a triangle, a flattened circular disk or a regular hexagon.

As indicated in? Ig * 1, the spacers are placed on the Shuttering 7 set, and the tension rods 8 of the reinforcement, for example a reinforcement mat with double additions, are placed on the rod 5 in the transverse direction, the rods 8 preferably, as shown in the figure, be pushed against the thickenings 6, so that the rods 5 between the thickenings 6 are not worth mentioning Bending experienced · '

Schut for ansprüohe ι

Claims (3)

- 6 a claim to protection 1. Spacer for securing a distance between Reinforcing bars and cladding, especially for reinforced concrete ceilings, characterized in that the spacer is rotationally symmetrical as a rod (5) is formed with thickenings (6) provided at regular intervals. 2. Spacer according to claim 1, characterized in that that the rod (5) preferably has a circular cross-section and the thickenings (6) are formed with polygonal cross-sectional areas. 3. Spacer according to Claims 1 and 2, characterized in that the thickenings (6) represent a regular hexagon in cross-section. 4 »spacer according to claims 1 to 3» thereby characterized in that the thickenings (6) are each spaced apart from one another on the rod (5) are arranged, which are equal to the distances between the tension rods (8) of reinforcement mesh, and that the Yerdickun- (6) Represent surfaces to the stop on the tension rods.