Cylindrical vaults and their evolution to Felix Candela's long cylindrical roof shells. A geometric and mechanical analysis

Man has copied nature geometric laws to get the maximum quality of the materials. These geometric laws are used for years to this day both in the formal, constructive aspects or the structural calculation. A historical review that is topped with the emergence of a new material such as reinforced concrete and the maximum structural utilization through the use of plastic calculation of long cylindrical shells of Felix Candela is made.