The interposition of TECNARIA dowel and crampon connectors between the timber beams and the concrete slab allows the two materials to collaborate with each other. The result is structurally efficient structure in which, due to the vertical loads applied, the concrete is mainly under compression and the timber mainly under tension. The composite timber-concrete structure will therefore result stronger and stiffer than a simple timber structure. Dynamic behaviour (vibrations) and sound insulation levels are also greatly improved.

The addition of a concrete slab is an excellent technical solution in masonry buildings located in seismic areas, since it enables load bearing walls to be connected to each other through a rigid floor capable of evenly distributing horizontal seismic forces.

THE TECNARIA DOWEL AND CRAMPON CONNECTORS have been specially designed and widely tested in order to join timber structure to concrete slabs.

The effectiveness of the connector is assured by the strong base plate supporting the dowel, toothed with crampons so to improve its grip on the wood and to better contribute to the shear stress absorption.. Numerous laboratory tests have demonstrated the absolute efficacy of this solution which prevents the occurrence of embedment which is inevitable when common screws or nails are used as connection system. Nails, screws and crampons, old and tested elements, have now been given a new task.

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