This study of the complex of San Lorenzo in Milan draws on archaeological and archaeometric evidence. It presents the results of a recent investigation into late antique masonry techniques at San Lorenzo, which looked at stone and brick masonry techniques, the various type of foundation systems and the building techniques responsible for the structure as a whole. The archaeological element of the paper is based on a stratigraphical analysis of the entire complex, including its stone foundations, pavements, brickwork, vaulting and plasterwork; research on bricklaying, stone-cutting and masonry techniques; and the dating of its windows, doors, and frames. At the same time, the archaeometric aspect of the paper comprises the typological categorisation of the building materials identified at the site. These include stones, bricks, and the ingredients of bonding sections, mortar work and plastering. The origins and dating of these materials will also be an important part of the paper. Dating was carried out using TL and 14C methods.
