1. Professor, Dept. of Civil and Environmental Engineering, Univ. of Perugia, via Duranti 93, 06125 Perugia, Italy.
2. Research-Design Engineer, TECINN S.r.l., Perugia-Milano, Italy.
3. Researcher, Dept. of Civil and Environmental Engineering, Univ. of Perugia, via Duranti 93, 06125 Perugia, Italy (corresponding author).
4. Vice President, Hardwire LLC, Pocomoke City, MD 21851.