Liebig Superplus Undercut Anchors, Bolts & Fixings - Anchoring Technology

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Anchor Bolts

Fastenings deployed to attach objects to a primary base material are generically referred to as anchor bolts in many spheres, with examples of a primary base material to which an object would be attached being plaster, stone, block, concrete or brick. Anchor bolts exist in many different types, each of which is designed for deployment for specific applications corresponding to the specific primary base material to which they would be attached.

When an anchor bolt is used to attach objects to the corresponding base material, it will experience some pressure from those affixed objects. The effectiveness and efficiency of an anchor bolt to withstand the loads under which it would be placed are largely attributed to the material used in its manufacture, its dimensions as well as its design features.

By design, anchor bolts are manufactured to offer support to different loads, including tensile / tension or “pulling” loads, which act in line with anchor bolt’s axis, as well as shear loads (shear forces), which act directly across the anchor’s axis, this in addition to acting along the base material’s surface. A combined load can also exist, which is a combination of the two loads.

An example of this type of application of a metal heavy duty anchor would be that of a steel column, which is connected to a reinforced foundation of concrete. In this particular instance, the anchor bolts would serve as the link between this pair of structural elements. Generally, the attachment of non-structural elements to a building would be exemplified by a connection between a reinforced concrete wall, slab or floor and something like a facade system.

Liebig anchor bolts as an example of concrete anchors fall under the torque controlled expansion anchor classification category. They’ll either possess a threaded component with a nut protruding out of the top or a hexagon bolt head. Upon installation through the baseplate, these would be deployed to tighten the anchor, providing the required clamping force to offer resistance to the loads that would be applied from the baseplate, or any of the other objects which would be fastened. Liebig bolts are comprised out of carbon steel and are manufactured readily available with a coating of galvanized zinc.

Liebig fixings are available as a fully-assembled solution, with the anchor bolt’s lower-end featuring a permanent steel expansion-shield or expansion-clip attachment. With the tightening of the hexagon head or nut, the expansion cone is drawn through the shield and in so doing creates the required expansion to offer resistance to the induced loads.

Safety Anchor Bolts

As the only anchors which offer uniform expansion which covers the entire length of the expansion shield, these are unique to Liebig. This is achieved through the double-expansion cone (twin cone) design. Liebig’s Safety Bolts maintain high load capacity which spans the entire length- and diameter-range. This is what accounts for their high performance status, making them the choice-grade in safe anchor bolts for deployment in applications which are safety-critical. They can be found in deployment in nuclear plants, water treatment plants as well as other high performance anchor application environments which encompass a wide range of construction and infrastructure project types.


liebig superplus features

Anchor Bolt Diameter

Anchor bolts are required to meet all applications needs by design. As a result, they come in different diameters. These anchor bolts come in variations which range from those that are manufactured for lightweight applications, including 1/4 inch or M6 / 6mm, right up to those which are better suited to larger applications, including 5/8 inch or M16 / 16mm. The choice in diameter to match the corresponding application is dependent on the required load-retention or load-resistance values, the contextual specifications, the diameter of the fixture’s hole, as well as some other criteria.

Anchor Bolt Length

Each of the anchor’s diameter options comes with a variety of length options. The depth of the required embedment to achieve the load dictates the length of the anchor bolt to be selected. The anchor’s length to be selected is also dictated to by the girth of the base material to which it will be affixed as well as the thickness of the object which is to be fastened. Consultation with the relevant technical information and data of the anchors being deployed is always advised in determining the right combination of the diameter and length.