1. Civil Engineer, Dynatest Engenharia Ltda., São Paulo, SP, Brazil, 01409-900, e-mail: felipe.camargo@dynatest.com.br
2. Wisconsin Distinguished Professor, Dept. of Civil and Environmental Engineering, Univ. of Wisconsin-Madison, Madison, WI 53706, US, e-mail: chbenson@engr.wisc.edu
3. Professor, Dept. of Civil and Environmental Engineering, Univ. of Wisconsin-Madison, Madison, WI 53706, US, e-mail: edil@engr.wisc.edu