This handbook provides a complete and detailed overview of piling systems and their application. The design and construction of piled foundations is based on Eurocode 7 and DIN 1054 edition 2010 as well as the European construction codes DIN EN 1536 (Bored piles), DIN EN 12699 (Displacement piles) and DIN EN 14199 (Micropiles). These recommendations also deal with
- categorisation of piling systems,
- actions on piles from structural loading, negative skin friction and side pressure,
- pile resistances from static and dynamic pile test loading as well as extensive tables with the pile load-bearing capacity of nearly all piling systems based on values from practical experience,
- pile groups,
- performance of static and dynamic test loading and integrity tests,
- load-bearing behaviour and verifications for piles under cyclical, dynamic and impact actions
- quality assurance for construction.
An appendix with numerous calculation examples completes the work.
As part of the approval procedure for offshore wind energy structures, the Federal Office for Shipping and Hydrography (BSH) demands verifications according to the new Chapter 13 ("Load-bearing behaviour and verifications for piles under cyclical, dynamical and impact actions") of the EA Pfahle (the recommendations of the Piling working group - 2nd edition), which deals with external pile resistance for the foundations of offshore wind energy structures and the types of verifications to be provided under cyclical actions.
The publication of the EA-Pfahle recommendations by the Piling working group of the German Society for Geotechnics (DGGT), which works with the same members as the piling standards committee NA 00-05-07, is intended to provide assistance for engineers active in the design, calculation and construction of piled foundations. The recommendations can thus be considered as rules of the technology and as a supplement to the available codes and standards.

The completely revised and extended Recommendations deal with all questions relevant to the planning and dimensioning of geosynthetics-reinforced earth structures. In addition to the demands on materials and analysis principles, the applications of geosynthetics in a range of foundation systems, ground improvement measures, highways engineering projects, in slopes and retaining structures, and in landfill engineering are discussed.
The Recommendations have been supplemented by the following sections:
- reinforced earth structures over point or linear bearing elements,
- foundation systems using geotextile-encased columns,
- bridging subsidence,
- dynamic actions of geosynthetic-reinforced systems.
The remaining sections have been fundamentally revised and updated in line with current standards and codes of practice.

The recommendations summarise the state of the art. Their aim is the proper exploitation of the ground for geothermal purposes without adversely affecting the ground or the groundwater on the one hand and the operation of the system and nearby buildings on the other. The recommendations should be used during consulting, design, installation and operation in order to achieve optimum and sustainable use of the ground at a specific location. Authorities responsible for supervising and approving projects can use the recommendations as a guide when taking decisions and making stipulations. The Geothermal Energy Study Group was set up in Bochum in 2004 and became the joint DGGV/DGGT study group in 2007. Some 20 specialists from universities, authorities and engineering consultants are active in the group and meet two or three times a year.

With the issue of these recommendations, which have the character of a standard, the "Building Excavations" working group of the German Geotechnics Association (DGGT) aims to provide assistance with the design and structural calculation of excavation support works.
The introduction of the Eurocodes for building control purposes made necessary a revision of the previous edition of the recommendations to comply with the requirements of DIN EN 1997-1:2009 together with the national annex DIN 1997-1/NA:2010-12 and the supplementary regulations of DIN 1054:2010-12. All recommendations were thoroughly checked, revised where necessary and adapted to new knowledge. Chapter 10 "Building excavations in water" was substantially revised. Due to the progress of development of measurement instruments and the more stringent requirements, Chapter 14 "Instrumentation for the monitoring and supervision of building excavation support works" was formulated completely anew.
The recommendations of the working group "Building Excavations" should be of assistance,
- to simplify the design and structural calculation of excavation support works,
- to harmonise loading assumptions and calculation procedures,
- to ensure the structural stability of excavation support works and their individual elements and
- to improve the cost-effectiveness of excavation support works.

The Tunnelling Pocket Book has for many years provided practical advice for clients, consultants and contractors. It deals with current developments and problems, presents innovative solutions and thus documents the latest state of the technology.

Die Empfehlungen dokumentieren den Stand der Technik in der Bemessung, Auswahl, Anwendung und Pr?fung von Geokunststoffen im Tunnelbau und sind vom Arbeitskreis AK 5.1 "Kunststoffe in der Geotechnik und im Wasserbau" der Deutschen Gesellschaft f?r Geotechnik e.V. (DGGT) erstellt worden. Das Buch behandelt Dichtungssysteme mit Kunststoffdichtungsbahnen f?r Tunnel in geschlossener und offener Bauweise sowie f?r sonstige unterirdische Bauwerke und dient als Leitfaden f?r Bauherren, Planer und Ausf?hrende. Entwicklungen in relevanten Regelwerken und Normen, Projekterfahrungen sowie Weiterentwicklungen und anwendungsbezogene Forschungserkenntnisse seit Erscheinen der ersten Auflage im Jahr 2005 wurden in diese 2. Auflage der "Empfehlungen zu Dichtungssystemen im Tunnelbau EAG-EDT" eingearbeitet. Fallbeispiele erg?nzen die Ausf?hrungen.

The Tunnelling Pocket Book has for many years provided practical advice for clients, consultants and contractors. It deals with current developments and problems, presents innovative solutions and thus documents the latest state of the technology.

The aim of the Recommendations is the technically correct exploitation of the subsoil for geothermal purposes. It should be of assistance in avoiding impairment of soil and groundwater during the operation of the plant and buildings.

The book collects almost all the recommendations issued so far by the DGGT working group "Numerical analysis in geotechnology" in one work. For the collected publication, the recommendations have been matched, updated and in many aspects supplemented and completed.

This handbook provides a complete overview of pile systems and their application and production. It shows their analysis based on the new safety concept providing numerous examples for single piles, pile grids and groups. These recommendations are considered rules of engineering.

Die Empfehlungen dokumentieren den Stand der Technik in der Bemessung, Auswahl, Anwendung und Pr?fung von Geokunststoffen im Tunnelbau und sind vom Arbeitskreis AK 5.1 "Kunststoffe in der Geotechnik und im Wasserbau" der Deutschen Gesellschaft f?r Geotechnik e.V. (DGGT) erstellt worden. Das Buch behandelt Dichtungssysteme mit Kunststoffdichtungsbahnen f?r Tunnel in geschlossener und offener Bauweise sowie f?r sonstige unterirdische Bauwerke und dient als Leitfaden f?r Bauherren, Planer und Ausf?hrende. Entwicklungen in relevanten Regelwerken und Normen, Projekterfahrungen sowie Weiterentwicklungen und anwendungsbezogene Forschungserkenntnisse seit Erscheinen der ersten Auflage im Jahr 2005 wurden in diese 2. Auflage der "Empfehlungen zu Dichtungssystemen im Tunnelbau EAG-EDT" eingearbeitet. Fallbeispiele erg?nzen die Ausf?hrungen. Inklusive PDF

The Recommendations deal with the basics of performing verifications and the application of geotextiles for the reinforcement of various foundation systems and ground improvement measures, in road construction, for slopes and retaining structures and in landfill operation.