1. Senior Engineer, Maxit—Tecnologias de Construção e Renovação, Lda., Zona Industrial de Ourém, 2435-661 Seiça, Portugal. E- mail: joão.garcia@maxit.pt
2. Associate Professor, Dept. of Civil Engineering and Architecture, Section of Construction, IST—Technical Univ. of Lisbon, Avenue Rovisco Pais, 1049-001, Lisbon, Portugal (corresponding author). E-mail: jb@civis.ist.utl.pt