ABSTRACT
These kind of sources guarantee homogeneity in the accuracy of papers, but they don’t give an high quality of data that has been deepened case by case. The census conducted in Gallia Cisalpina on edited excavations revealed 109 evidences of the use of perishable materials in Roman construction. The subsequent step was the development of a standard vocabulary in order to isolate the common technical features of each record. The almost endless variety of building techniques that excavations revealed, made compulsory the need to create groups of evidences. A classification based on groundwork techniques lead to five technological groups, in which evidences should be divided.
