Franco Angotti is professor emeritus of Strength of Materials at the University of Florence, Italy. He is President of the Italian Mirror Committee to the European Committee CEN/TC250/SC2 “Concrete Structures”, member of the Committee for Technical Standards of the Italian National Research Council (CNR) and the Task Group of the Italian High Council of Public Works for the definition of National Determined Parameters of Eurocodes. He is Presidentof the Italian Association for Reinforced and Prestressed Concrete (AICAP).Matteo Guiglia has a PhD in Structural Engineering from the Turin Polytechnic, Italy. He delivers both consultancy and structural design services at both national and international level. He is member of the Task Group T2.1 “Serviceability models” of the Fédération Internationale du Béton (fib).Piero Marro is professor emeritus of Strength of Materials at the Turin Polytechnic, Italy. As an affiliated to the Comité Euro-International du Béton (CEB) since 1975, he participated in the drafting of Model Code 1978 and Model Code 1990 and in the conversion of EC2 from provisional to definitive standard in 2004. He is a "fib Life Member" and corresponding member of the Turin Academy of Sciences.Maurizio Orlando is associate professor of Structural Analysis and Design at the School of Engineering of the University of Florence, Italy. His research focuses on theoretical and experimental analysis of reinforced concrete structures under both static and seismic loading. He is member of the Working Group CEN/TC 250/SC 2/WG 104 "Shear, punching, torsion" dealing with the revision of section 6 of Eurocode 2, Vice President of the Italian Mirror Committee to the European Committee CEN/TC250/SC2 “Concrete structures” and Secretary of the Italian Association for Reinforced and Prestressed Concrete (AICAP).