1. Senior Engineer, Engecorps—Corps of Consultant Engineers Inc., Av. Queiroz Filho 455, 05319-000, Sao Paulo, SP, Brazil.
2. Associate Professor, Dept. of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA 24061-0105.
3. Associate Professor, Dept. of Geotechnical Engineering, Sao Carlos School of Engineering, Sao Paulo University, Av. Dr. Carlos Botelho 1465, 13560-970, Sao Carlos, SP, Brazil.