ABSTRACT
The amount of care devoted to the collection of information, to design and finally to the actual construction is strongly connected with risk. For structures with low risk, this care is much lower than for structures with high risk. The risk management process, which considers all uncertainties linked with the ground, can thus recommend the best construction technology. The risk specification is based on detailed evaluation of the uncertainties with which the main phases of the structure design and execution are connected. Statistical methods, on the other hand, are typical for structures connected with high risk or can be applied at the end of the design investigation phase, when for each layer there is a sufficient number of measured results. The earth structures of transport engineering are different from other geotechnical structures, while for foundation structures and underground structures, the real conditions are at least partly disclosed.
