1. Researcher, Dept. of Construction Engineering and Management, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, P.O. Box 306, CP 6904411 Santiago, Chile (corresponding author).
2. Titular Professor, Dept. of Construction Engineering and Management, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, P.O. Box 306, CP 6904411 Santiago, Chile.
3. Associate Professor, Universidad de Concepción, Engineering Faculty, Edmundo Larenas s/n, P.O. Box 160-C, Correo 3, Concepción, Chile; and, Postdoctorate Researcher, Dept. of Construction Engineering and Management, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, P.O. Box 306, CP 6904411 Santiago, Chile.