This book presents the proceedings of the 21st European Young Geotechnical Engineers Conference, held in the Netherlands in September 2011. Six sections cover the topics of: underground construction; pile foundation and ground improvement; soil dynamics; dams, erosion and piping; deformation and soil properties and geothermics. The papers included here present the new and refreshing perspective of young engineers exploring the field of geotechnics. Geotechnical engineering aims to contribute to sustainable living and to the creation of safe, economic and pleasant spaces to live, work and relax. IOS Press is an international science, technical and medical publisher of high-quality books for academics, scientists, and professionals in all fields. Some of the areas we publish in: -Biomedicine -Oncology -Artificial intelligence -Databases and information systems -Maritime engineering -Nanotechnology -Geoengineering -All aspects of physics -E-governance -E-commerce -The knowledge economy -Urban studies -Arms control -Understanding and responding to terrorism -Medical informatics -Computer Sciences