Fixing systems, such as anchor channels, play an important role in concrete construction for connecting construction elements with each other and for fixing façade supporting structures or installations. The requirements for anchor channels are based on specific approvals, e.g., of the DIBt (Deutsches Institut für Bautechnik).
Lifting anchor systems
Lifting anchor systems are used to transport precast concrete elements safely. They are subject to stringent safety criteria, which are governed by the Accident Prevention and Liability association in Germany, for example.
With respect to fixing systems, anchor channels fulfil various tasks. They make it possible to join precast concrete elements or, for example, fasten installations without damaging the concrete or reinforcement. Anchor channels are designed and included by the engineer at a very early stage during preliminary planning. Therefore, the right choice of channel for secure fixing is guaranteed. Channels embedded in concrete represent the ideal basis for an easy to install and adjustable fastening. Anchor channels of the right quality are available for every purpose, such as hot-rolled channels for dynamic loads, which occur in crane runways or machine fastenings. A high level of corrosion protection is guaranteed by the use of stainless steel. Toothed profiles, which can be used in three dimensions, are ideal for fastening in areas prone to earthquakes, for example.
The areas of application for anchor channels are diverse. For example, they include the
• fixing of façades, pipes, lines, lighting systems, crane runway rails and timber connections to steel reinforced concrete;
• anchoring of escape and sun-protection structures;
• assembly and connection of precast concrete elements;
• lift construction fastenings;
• machine fastenings;
• fastenings in tunnels.
Lifting anchors are used for hoisting, moving and mounting precast concrete elements safely. Since there are a variety of modern precast concrete elements, such as thin-walled plates, bulky slabs, columns and supports, suitable lifting anchor systems have been designed for every application. A lifting anchor system consists of the lifting anchor built into the precast element, an associated unique lifting device and a designated moulding insert.
The dimensions of the precast elements, the edge distance, type and position of the lifting anchor and the concrete grade are relevant to the load bearing characteristics of the anchor. Documentation of the leading manufacturers provides information on the capacity, edge distances and installation values of the individual lifting anchor systems. The technical customer support departments of our member companies develop corresponding technical and economic solutions in the event of special lifting requirements. The ‘Sicherheitsregeln für Transportanker- und -systeme von Betonfertigteilen’ (safety rules for lifting anchors and systems of precast concrete elements – BGR 106) of the German Federation of Trade Associations are a generally accepted standard for the safety of lifting anchor systems. In addition, the EC Machinery Directive applies to lifting devices.
The aforementioned directives set stringent requirements for materials and the safety of the lifting device and anchor. These requirements are met by member companies of the ECS and continuously monitored in the course of their quality management.