1. Department of Agriculture, Food and Environment, University of Catania, Building and Land Engineering Section (Di3A), Via S. Sofia 100, 95123 Catania, Italy
2. Departamento de Construcciones Arquitectónicas 1, Escuela Técnica Superior de Arquitectura, Universidad de Sevilla, Avda. de Reina Mercedes, 2, 41012 Seville, Spain
3. Department of Civil Engineering and Architecture (DICAR), University of Catania, V.le Andrea Doria 6, 95125 Catania, Italy