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The aim of these recommendations is to harmonize and further develop the methods, according to which excavations are prepared, calculated and carried out. Since 1980, these have been drawn up by the working group for excavations at the German Society for Geotechnics (Deutsche Gesellschaft für Geotechnik) under the name EAB and are similar to a set of standards. All the main software programs in Germany are based on these recommendations. The recommendations help in designing and calculating excavation constructions, unifying approaches to loads and methods of calculation. Since they are based on an approved global safety concept, following these recommendations ensures the stability and usability of excavations and their individual components. Furthermore, they help to improve the profitability of excavation constructions. The result is a work of major importance for all experts concerned with the planning and calculation of excavations.
Despite the increasing occurrence of policies aimed at mobilising the financial and human resources of the private sector, most urban local governments responsible for urban basic services in the South do not have the capacity to initiate and sustain part
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.