Aggregates represent the mainly used product in the building industry; they are used in concrete, bituminous conglomerates (rocks particles), plasters, road and railways sub-grades etc. The different International Standards together with the new European Standards (EN) are requiring many different checks on different features as: mechanical, physical, geometrical, kind of density, strength, degradability etc. A rock stratum will undergo alterations in the mechanical characteristics when it is exposed to excavations, handlings etc. For above reasons a study of the mechanical characteristics of an intact rock becomes indispensable in order to analysis the relative characteristics when realising underground or surface structures as galleries, quarries and foundations