Concrete Material

The weight of a slab supported on a column induces shear stresses in the slab. These stresses, if sufficient and where additional reinforcement is not provided, would result in the column ‘punching’ through the slab. This punching shear is similarly induced in the footing on which the column bears.

Although punching shear can be relieved by localised thickening of the concrete with downstand beams and enlarged column heads, the construction of flat slabs offers many advantages. A consistent head space can reduce the overall height of a building and provide significant time and material savings.


This is a shear stud rail system, sometimes called ssr on drawings used within a slab to provide additional reinforcement around columns, ancon shearfix is the ideal solution to the design and construction problems associated with punching shear. The system consists of double-headed studs welded to flat rails, positioned around the column head or base. The studs are welded to the rail at centres determined by ancon’s software or by a design calculation.

Lapped joints are not always an appropriate means of connecting rebar. The use of ancon reinforcing bar couplers can simplify the design and construction of reinforced concrete and reduce the amount of reinforcement required.

The isolan system is a structural component used to join external concrete balconies to internal concrete floor slabs. It provides continuity to both the concrete reinforcement and the thermal insulation of the wall protecting the building against the effects of cold bridging.

Standard isolan systems, comprising rigid cfc-free polystyrene insulation and stainless steel shear reinforcement, suit most depths of cantilever and propped cantilever balconies. The various systems allow the transfer of all loads in structural concrete i. E. Moment, shear, compression and tension, and are suitable for straight runs and both internal and external corners.

System Benefits:

Isolan connectors require conventional reinforcing bars to provide the tension and compression reinforcement. When compared to systems where this reinforcement is an integral component, the isolan solution can provide substantial cost savings and simplify specification and scheduling, transportation, on-site handling and installation.

We are manufactures of products which provide continuity of reinforcement across construction joints in concrete.

Eazistrip System:

Cares technical approval, ta2-5017.

Eazistrip consists of pre-bent bars housed within a galvanised steel casing. Once installed, the protective cover is removed and the bars are straightened.

Starter Bar System:

Starter bars are supplied fixed to an ancon coupler. Once cast in concrete, the coupler’s end cap is removed and a threaded continuation bar is installed with a calibrated torque wrench to complete the connection.