Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Three-dimensional space-defining
Patent
1986-11-04
1988-05-17
Perham, Alfred C.
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Three-dimensional space-defining
52652, 52687, 52688, 52689, E04C 518, E04C 506
Patent
active
047441909
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The invention relates to a spacing retainer for a reinforcement containing two structural steel fabrics arranged parallel to and spaced from each other.
BACKGROUND ART
Known spacing retainers are arranged between the structural steel fabrics in order to hold such structural steel fabrics at a predetermined spacing from each other. In such arrangements the spacing retainers are not sufficiently firmly arranged in many cases so that the spacing retainers fall over under the loads which frequently occur during concrete construction, and can no longer fulfill their purpose. However, it is indispensable for the reinforcement that the structural steel fabrics remain maintained in their relative positions until solidification of the concrete.
DISCLOSURE OF INVENTION
It is the object of the invention to provide a spacing retainer which is sufficiently firmly arranged between the structural steel fabrics and maintains the predetermined spacing between the structural steel fabrics even under load.
According to the invention this object is achieved in that the spacing retainer contains a plurality of series-arranged and juxtaposed spacer elements which are lockingly connected with a first structural steel fabric of the reinforcement and which hold a second structural steel fabric at a spacing from the first structural steel fabric.
The inventive spacing retainers can be mounted in a simple manner because the spacer elements in their compressed state can be introduced between adjacent members or elements of the first structural steel fabric and the locking connection is produced simply by release. The locking connection results in a sufficiently firm arrangement of the spacer elements between the first and the second structural steel fabrics which are thereby reliably retained at their predetermined spacing even under loads.
BRIEF DESCRIPTION OF DRAWINGS
Exemplary embodiments of the inventive spacing retainer are illustrated in the drawings and explained and described in detail hereinbelow with reference to the reference characters. There are shown in
FIG. 1 a perspective view of a reinforcement containing the inventive spacing retainers;
FIG. 2 a view of an angle element in the assembled state in a spacer element of the reinforcement shown in FIG. 1;
FIG. 3 a view of a locking element in the assembled state in a spacer element of the reinforcement shown in FIG. 1;
FIG. 4 a side view of a modified construction of a spacer element in the reinforcement shown in FIG. 1; and
FIG. 5 a perspective view of another form of a reinforcement containing the inventive spacing retainers.
PREFERRED MODES FOR CARRYING OUT THE INVENTION
FIG. 1 schematically shows in perspective view a section of a reinforcement for concrete as building material. Such reinforcement consists of a first, namely bottom structural steel fabric 6 and a second, namely top structural steel fabric 7 which are arranged in a spaced relationship to each other in a substantially parallelly extending manner and which are held spaced from each other by means of spacing retainers. The spacing retainers are formed of spacer elements 20 which are arranged in rows in series and side by side.
The spacer elements 20 are constructed from resilient material, particularly reinforcing steel such that they can be mounted in particularly simple manner. In the illustrated exemplary embodiment each spacer element 20 consists of two angle elements 21 and a central angle element which is arranged therebetween and constructed as a locking element 22. Depending on the conditions and requirements of the respective purpose of use, there can also be selected a different numerical ratio between the angle elements 21 and the locking elements 22.
The angle elements 21 and the locking element 22 enclose substantially the same angle which is adapted to the respective case of use or the spacings present in the first structural steel fabric 6. In detail, the locking element 22 in this arrangement is constructed such that it locks to two adjacent elements 10 and 11
REFERENCES:
patent: 1674204 (1928-06-01), Johnson
patent: 3289378 (1968-12-01), Carroll
patent: 3444663 (1969-05-01), Hehn
Couwenbergs Paul
Holterhus Andreas
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