Free software is available from Ancon to simplify the design of punching shear reinforcement.
Ancon Shearfix is installed within a concrete slab to reinforce column heads against punching shear. Its use negates the need for any localised thickening of the slab with features such as downstand beams or enlarged column heads. Shearfix consists of double-headed steel studs welded to flat rails. Studs are manufactured in six diameters and can be supplied in virtually any length.
Unique to the Ancon program, designers are able to generate both an orthogonal and a radial rail layout, ensuring specification of the most cost-effective solution i.e. fewest number of studs.
Shearfix offers many advantages over loose shear links, which can be time-consuming to design and install.