1. Research Fellow, School of Engineering, Graduation Program in Civil Engineering, Federal Univ. of Bahia-Brazil, Aristides Novis, 02, Federação, BA 40210630, Salvador, Brazil.
2. Assistant Professor, Graduation Program in Civil Engineering, Federal Univ. of Bahia-Brazil, Aristides Novis, 02, Federação, BA 40210630, Salvador, Brazil (corresponding author).
3. Research Fellow, Graduation Program in Civil Engineering, Federal Univ. of Bahia-Brazil, Aristides Novis, 02, Federação, BA 40210630, Salvador, Brazil.