Design of post-installed and cast-in-place anchors according to the new EN 1992-4 and ACI 318-19
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Abstract
Post-installed and cast-in-place anchors are widely used to connect structural or nonstructural elements using a steel baseplate at the concrete structure. Generally, concrete anchors must be qualified if their failure would compromise the safety or result in substantial economic damage. Concrete anchor qualification results in technical approvals forming the basis for a code-compliant design. In Europe, anchor design is governed by the new standard EN 1992-4, and in the United States by ACI 318. Qualification and design regulations are predominately similar between Europe and the United States; however, there are still some notable differences. To this end, this paper introduces the basics of anchor design and underlying product qualification. Then, it describes some of the boundary conditions with special attention to the baseplate as well as discusses the critical design parameters. Later, the paper provides a comprehensive overview of the complex design rules. This paper includes identification of the differences between EN 1992-4 and ACI 318 and their resultant effect on anchor design.
