The European pre-standard CEN/TS 1992-4 for the design of fastenings by means of headed studs, anchor channels as well as post-installed mechanical and chemical anchors is ready for use. The background and interpretation of the provisions related to the determination of actions and resistances based on limit state design, durability, fire resistance, fatigue and earthquake actions as required by CEN/TS 1992 are described in detail. Selected chapters from the German concrete yearbook are now being published in the new English "Beton-Kalender Series" for the benefit of an international audience. Since it was founded in 1906, the Ernst & Sohn "Beton-Kalender" has been supporting developments in reinforced and prestressed concrete. The aim was to publish a yearbook to reflect progress in "ferro-concrete" structures until - as the book's first editor, Fritz von Emperger (1862-1942), expressed it - the "tempestuous development" in this form of construction came to an end. However, the "Beton-Kalender" quickly became the chosen work of reference for civil and structural engineers, and apart from the years 1945-1950 has been published annually ever since.

Rolf Eligehausen, Prof. Dr.-Ing., studied structural engineering at the Technical University Braunschweig and gained his doctorate from the University Stuttgart. Following two years of research at the University of California Berkeley, he became professor for fastenings technology at the University Stuttgart in 1984. Professor Eligehausen is a member of numerous national and international expert commissions in the fields of steel-reinforced concrete and fastening technology and the author of a large number of articles and books on these topics. Rainer Mallée, Dr.-Ing., studied structural engineering at the Technical University Braunschweig and gained his doctorate from the University Stuttgart. Between 1980 and 1987 he was head of Professor Rehm's engineering bureau in Munich, before becoming head of development in fastening elements at fischer in Waldachtal, Germany. Between 1996 and 2010 he was head of research at the fischer group of companies. Prior to his retirement in 2010 he was a member of numerous national and international expert commissions in the fields of fastening technology and the author of a large number of articles on these topics. Werner Fuchs, Dr.-Ing., studied structural engineering at the Technical University Karlsruhe and gained his doctorate from the University Stuttgart. Between 1991 and 1997 he assumed a senior position at Hilti's R&D center in Kaufering, Germany. In 1997 Dr. Fuchs returned to the University of Stuttgart, where he manages research and coordination of projects in different fields pertaining to fastenings in concrete and masonry. Since 2003 he is also lecturer for fastening technology at the University Karlsruhe. He is a member of numerous national and international expert commissions in the fields of steel-reinforced concrete and fastening technology. He has published a large number of articles related to these topics.