1. Temporary Engineering Manager, SKW Constructors (a Skanska, Kiewit, Weeks JV), 1500 Seaboard Ave., Portsmouth, VA 23707.
2. Assistant Professor, Construction Engineering and Management Dept., School of Engineering, Pontificia Univ. Catolica de Chile, Vicuna Mackenna 4860, Macul Santiago, Chile, 7820436 (corresponding author).