The book describes in detail and in a comprehensible manner the problems of subsoil exploration, the properties of soil and rock, earthworks and subsoil improvement, slope and ground failure, construction in groundwater and subsoil dynamics. These points are important basics for every construction site. The textbook's extensive illustrations make it particularly valuable for civil engineers and architects in their studies and practice. The book has been revised for the 20th edition and also includes the new DIN 14688 and 14689 standards. The chapters on subsoil, geotechnical investigations and soil parameters have been completely revised.