1. School of Civil Engineering, Architecture and Urban Planning, Univ. of Campinas, Campinas 13083-970, São Paulo, Brazil (corresponding author).
2. Associate Professor, School of Civil Engineering, Architecture and Urban Planning, Univ. of Campinas, Campinas 13083-970, São Paul, Brazil.
3. School of Civil Engineering, Architecture and Urban Planning, Univ. of Campinas, Campinas 13083-970, São Paul, Brazil.
4. Associate Professor, Dept. of Civil Engineering, Architecture and Georesources, Ceris, Instituto Superior Técnico, Universidade de Lisboa, 1649-004 Lisboa, Portugal.