Anchor Technology in Concrete and Masonry for Practitioners and Engineers

Anchors are everyday items in construction. However, the ever more complex world of building has led to anchor technology being investigated in more and more scientific detail during the course of product development. New anchor systems take into account the increasing diversity of base materials and the required economic efficiency. The scientific studies result in sometimes highly complex engineering design methods that are specified in numerous codes of practice, e.g. EN 1992-4 'Eurocode 2 - Design of concrete structures - Part 4: Design of fastenings for use in concrete'. As a result, it is no longer possible to design an anchor with a simple, quick and easily grasped manual calculation.

However, the experience of the authors over the past 20 years shows that in order to gain the acceptance of users, there is an urgent need to translate academic anchor theory into manageable anchor practice for real building sites.

It is exactly that gap that this book intends to fill. The focus is on the practical use of anchors and answering practical questions such as: 'Which anchor do I need for my fastening task and what do I have to consider?' To answer this question, the authors guide the reader through the seemingly vast number of anchor systems and provide advice for everyday building situations. The theory regarding the structural behaviour is only explained, and then only briefly, when it helps to solve the fastening task and understand the solution to that task. For clarity, the reader is merely referred to the existing codes of practice and other specialist publications that provide summaries.

All authors have been working for many years with a focus on anchors and fastenings, some of them in anchor testing laboratory or as trainers. They are members of various working groups and committees in concrete and masonry structures.

Dr.-Ing. Dipl.-Wirt.-Ing. (FH) Jürgen H. R. Küenzlen LL.M. M.A. M.A.
1993-1998 Studies in Civil Engineering at the University of Stuttgart, majoring in Hydraulic Engineering; 1998-1999 Studies in Business Engineering at the University of Applied Sciences Pforzheim.
1999-2004 Scientific assistant and deputy laboratory manager at the Institute of Construction Materials at the University of Stuttgart, Department of Fastening Technology; 2004 doctorate (Dr.-Ing.) on the load-bearing behaviour of screw anchors.
2004-2007 product manager for window fasteners at Adolf Würth GmbH & Co. KG in Künzelsau/Germany; since 2008 project manager in product management with a focus on approval of anchors in the masonry sector and in the window fastening sector at Adolf Würth GmbH & Co. KG.
Collaboration in various working groups and committees on the subject of fall protection, burglary protection, window fixings, masonry; collaboration in the DIBt working group 'Tests in Construction'. Author and co-author of over 100 technical papers and reference books in the fields of fastening technology and flood protection.

Dipl.-Ing. (FH) Eckehard Scheller
1987 Apprenticeship as a wood mechanic (carpenter) followed by 2 years as a journeyman; then 1992-1995 civil engineering studies at the Technical University of Applied Sciences Berlin (TFH).
1996-2000 structural engineer at Pichler Ingenieure GmbH Berlin.
2001-2012 German Institute for Building Technology (DIBt), Department I2 'Anchorages and fixings, stairs'.
2012-2017 Project Manager Technical Marketing Fastening Technology at Adolf Würth GmbH & Co. KG, Künzelsau/Germany.
Since 2017, member of the DIBt working group 'Tests in Construction'.
2018-2020 Head of Technology and Standardisation at the Deutsche Gesellschaft für Mauerwerks- und Wohnungsbau e. V. DGfM (German Society for Masonry and Housing Construction) and head of the office of the Deutscher Ausschuss für Mauerwerk e.V. DAfM (German Masonry Committee).
Since 2019 ISB Block und Becker Consulting Engineers PartGmbB.

Dipl.-Ing. Rainer Becker
1993 University studies in civil engineering, specialising in structural engineering.
2000-2013 Research assistant at the Institute for Building Research and research in the area of fastening technology and ETICS; 2001-2012 deputy test centre manager 'post-installed reinforcement connections' at the Technical University of Dortmund.
Since 2013 managing director of fobatec GmbH with a focus on anchoring and fastening technology, and since 2017 test centre manager 'post-installed reinforcement connections' of fobatec GmbH.
Since 2018 founding partner of ISB Block und Becker Beratende Ingenieure PartGmbB.
Since 2022 managing director of OPUS Engineering GmbH with focus on anchorage and fastening technology.
Since 2007, collaboration in various working groups of the DIBt expert committee SVA 21; 2013 appointment to the DIBt SVA 21 'Anchorages and Fastenings'; since 2015 collaboration in the DIBt working group 'Tests in Construction'; 2020 appointment to the DIBt SVA 'A - ETICS' and 'B1 - ETICS on Mineral Substrates'.

Dipl.-Ing. Thomas Kuhn
2005 Diploma in civil engineering at the Technical University of Kaiserslautern.
2005-2006 Product development and application consulting at Metall-Kunststoff-Technik GmbH & Co. KG (MKT).
Since 2006, sales manager at Adolf Würth GmbH & Co. KG, and customer training for anchor users;
2008-2009 Deputy Head and 2010-2022 Head of the DIN EN ISO/IEC 17025:2018 accredited Würth anchor testing laboratory.
2022 Key Account Manager Anchor Technology in construction site project management; Since 2023 OPUS Engineering GmbH.
Member of TG2.9 Fastenings to structural concrete and masonry of the fib International Federation for Structural Concrete since 2011.

Thorsten Immel
1995-1998 Apprenticeship as a wholesale and foreign trade merchant at Adolf Würth GmbH & Co. KG;
1998-2001 Sales manager at Adolf Würth GmbH & Co. KG;
2002-2004 Further training as a technical business administrator at the Chamber of Industry and Commerce, and 2002 specialised training as a 'Certified Fastening Technician' trainer (Institut für Werkstoffe im Bauwesen IWB Stuttgart);
2002-2010 Product and application consulting, fastening technology division, Adolf Würth GmbH & Co. KG.
Since 2010 Würth anchor testing laboratory (DIN EN ISO/IEC 17025:2018 accredited): Performance and documentation of tests as part of approval and assessment procedures for anchors, creation of corresponding approval systems, performance of external and internal, theoretical and practical anchor training courses.