Aurelian Gruin 2, Dumitru-Doru Burduhos-Nergis 5,*and Vasilica Vasile 6 1 Civil Engineering Faculty, Politehnica University of Timisoara, 300223 Timisoara, Romania 2 NIRD URBAN-INCERC Timişoara Branch, 300223 Timisoara, Romania 3 Research Center in Engineering and Management, Politehnica Universit...