1. Associate Professor, Dept. of Civil Engineering, Univ. of Tabriz, 4166614171 Tabriz, Iran (corresponding author).
2. Senior Engineer, ANO Consulting Engineers, No. 15, BLV Elahiparast, 5166845889 Tabriz, Iran.
3. Professor, Dept. of Civil Engineering, The Univ. of Texas, Arlington, TX 76019.