In the complex economic and constructive system of the erection of a building, the planning and organizational aspects of the work represent the first fundamental steps towards reaching a satisfactory final product. Skilled workers are a crucial element of this process, as they have the technical knowledge of the quarrying and building processes that guarantee a successful outcome at the building site (cantiere di costruzione). This volume aims to explore ancient construction, working procedures and the transmission of technical expertise by skilled workers. Covering diff erent chronological ranges and geographical areas, it focuses on two main subjects: quarry marks or notae lapicidinarum and carving lines for planning architecture and artefacts. They are two aspects of the three-dimensional materialization of the plan and the organizational processes within the building activities. Quarry and mason?s marks are a kind of building material ?tracking code? from the extraction point to its final placement. The carving lines represent guidelines useful for the building?s planning and the positioning of stone and marble elements. This volume is a fi rst attempt at contributing with original and innovative thought on the networking of workshops, linking quarrying and building activities in ancient world.