Comparison with Shear Links
Ancon Shearfix offers many advantages over loose shear links. Links can be time-consuming to both design and install. A Shearfix system is easily detailed with our punching shear reinforcement design program which generates a layout drawing for inclusion in the building plans and, rather than being installed individually, these studs are supplied to site welded to rails at the appropriate spacing.
When comparing links with studs, research has shown that any additional material costs incurred when purchasing a prefabricated stud system, such as Shearfix, are generally far outweighed by the savings from a significantly reduced fixing time; these systems being up to ten times quicker to install (source: British Cement Association: Prefabricated punching shear reinforcement for reinforced concrete flat slabs. BCA, Camberley, 2001).
With their new European Technical Assessment (ETA), Halfen HZA serrated anchor channels fulfil all requirements of AS 5216:2021 and can be used in projects across Australia.
Leviat has released an enhanced version of its popular Ancon Shearfix design software that enables engineers to maintain a flat concrete slab at column heads by reinforcing the area against punching shear with a prefabricated, stud-rail system.