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CONSEQUENCES OF MISSING ENGINEERING-GEOLOGICAL AND GEOTECHNICAL INVESTIGATIONS AND TESTING ON THE DESIGN AND PROTECTION OF SLOPES FOR ROADS

The goal of preparing technical documentation cannot only be to create a technical basis for construction, but designing must be considered as a process of exploring the optimal solution by many criteria, only some of which are primarily technical. The field data required for planning and design are determined by engineering-geological and geotechnical investigations and reported through appropriate documentation. Regardless of the level of traffic infrastructure planning and design, the main objective and task of the preparation of this documentation is to provide geotechnical basis to define geotechnical conditions for achieving the stability of certain elements of the substructure of traffic infrastructure. Problems arise in cases of unjustifiably poor or insufficiently performed investigations and testing, when consciously such works are neglected to shorten the design time and save costs. The paper will present examples of prepared technical solutions created precisely as a result of lack of investigations and testing, primarily in relation to the design and protection of slopes.