Reinforcement Systems

HALFEN Punching Shear Reinforcement System (Studrail)

DB Shear Rail elements with double headed ribbed studs, welded to a spacer bar, are used as shear and punching reinforcement. They are preferably put in from the top after laying the flat slab reinforcement. HDB Shear Rails are supplied as standard elements, which are available off stock or in short delay, and complete elements, which are manufactured to measure on demand. The standard elements consist of 2 stud and 3 stud elements which can be combined to form 4-, 5-, 6 stud assemblies etc. The symmetrical arrangement of the HDB studs on each element guarantees correct installation. The patented clip bar ensures that the heads of the studs are covered by concrete.

Quality features are:

  • Stud diameters 10 to 25 mm
  • 2 and 3 stud elements
  • Officially approved (DIBt Berlin) for all structures with shear lods
  • Ideal for the insertion from the top

The complete elements HDB are designed with 3 and more double headed ribbed anchors welded to a spacer bar at individual spacings on demand. Complete elements are ideal for the installation from "below"; i.e. the elements are placed on the formwork by special spacers. The lower and upper reinforcements are then put into position.

Quality features are:

Stud diameters 10 to 25 mm

  • Complete elements are manufactured to measure with 3, 4, 5 and 6 double headed studs
  • Individual distances of the studs possible for the adjustment to the reinforcement grid
  • Officially approved (DIBt Berlin) for all structures with shear loads
  • Spacers available for concrete cover thicknesses from 15 to 45 mm

Product Information


HALFEN Punching Shear Reinforcement System (Studrail)
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