Cathedral of Milan: the structural history of the loadbearing system

The structure of the Cathedral of Milan is studied. The features of the building and the original aspects of its load bearing system are discussed. The progressive development of the structural system is described following its historical phases through four centuries. The final configuration is then analysed with its main load paths. Detailed information, collected during the 20th century restoration works, was used to determine the geometry and loads. Preliminary analyses are based on equilibrium principles, within the framework of limit analysis for masonry constructions. The main structural restoration works taking place during the life of the Duomo are outlined. The results provide a basis for the verification of more detailed numerical analyses and a reference for restoration interventions. Furthermore the introductory analyses presented here develop the knowledge for future studies devoted to the Cathedral of Milan, encompassing structural, construction and architectural issues.