1. Doctoral Student, Departamento de Ingeniería Civil, Medellín, Universidad Nacional de Colombia, Sede Medellín, Bogotá, Colombia.
2. Assistant Professor, Dept. of Civil, Environmental and Construction Engineering, Univ. of Central Florida, Orlando, FL.
3. Associate Professor, Departamento de Ingeniería Civil, Medellín, Universidad Nacional de Colombia, Sede Medellín, Bogotá, Colombia.
4. State Geotechnical Engineer, Florida Dept. of Transportation, Tallahassee, FL.