Abstract
The rock preservation scale is a term used for the evaluation of rock properties pertinent to the engineering and construction of hydroelectric power plants and dams. Based on the microregionalization principle it is designed to eliminate many of the inconsistencies found in broader and more general assay methods which are unable to track or incorporate small heterogeneities in rock properties. In this paper it is applied to field engineering geology experiments at five different hydroelectric plants where the preliminary survey work was carried out with the participation of the author. Rocks of different origin, composition, strength and geologic history were included in the analysis and in almost 200 deformation and shear tests.
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