Invention concerning shear force stressed ferro- or prestressed concrete (I)

The invention concerns a new kind of mounting parts for the increased punching shear strength of ferro- or prestressed concrete. The new area measured mounting parts in a piece of concrete have definite cost advantages and an increased punching shear strength or shear force load capacity.

The components have a novel form which is able to contact at least one of the reinforcement layers of the concrete floor. The contact can be arranged in different ways. The core of the concept are plane components, which have appendices, for example pierced clips or L-shaped arcuated clips which protude about the upper reinforcement.<br> Based on this concept, the indirect contact with pierced clips is provided so that reinforcement bars can be insert additionally. The reinforcement bars connects the upper reinforcement (or when there are two xy-shaped arranged reinforcements at least the lower of the both upper). Another embodiment is the direct connection with one of the upper reinforcement layers by bending the L-shaped clip around the reinforcement layer.

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