1. Senior Lecturer, Dept. of Civil and Environmental Engineering, Univ. of Auckland, 20 Symonds St., CBD, Auckland, New Zealand (corresponding author).
2. Assistant Professor, Engineering School, Universidad Panamericana, Campus Guadalajara, Ciudad Granja, 45010 Zapopan, JAL, Mexico.
3. Associate Professor, Dept. of Construction Management, Colorado State Univ., Fort Collins, CO 80523-1584.
4. Civil Engineer, Dept. of Civil and Environmental Engineering, Univ. of Auckland, 20 Symonds St., CBD, Auckland, New Zealand.
5. Assistant Professor, Dept. of Civil and Environmental Engineering, Univ. of Bío-Bío, Avenida Collao 1202, Concepción, Chile.
6. Professor and Head, Dept. of Construction Engineering and Management, Pontificia Universidad Catolica de Chile, Casilla 306, Correo 22, Santiago, Chile.